Application: It is used for two-way power supply and AC / DC power conversion in local distribution network and island power grid.

Features: Flexible DC transmission is a flexible two-way power transmission and reception mode, especially in medium and low-voltage local distribution network and island power transmission and reception network. When the local distribution network and island distribution network are powered, the power is input, and when the local distribution network and island distribution network generate power, the power is output. The island distribution network adopts DC transmission, and the power loss is lower than that of AC transmission, which saves the operation cost of the power grid. DC transmission relay protection is simpler and easier to set and control than AC transmission relay protection, which saves the installation cost of the whole system equipment.

Voltage level: 10kV, 35kV

Application: ZZMJ DC support capacitor is widely used in power electronic circuits of photovoltaic inverter, high-voltage frequency converter, electric locomotive, electric vehicle, SVG, APF and other systems. It plays the role of filtering, energy storage and protection. It can be used to smooth the output voltage of rectifier and absorb high amplitude pulsating current of DC bus.

Features:

1. It has self-healing, that is, when the capacitor breaks down during operation, the capacitor can recover its insulation and continue to operate.

2. The capacitor has the ability to withstand high ripple current and peak current.

3. The capacitor has no polarity and can withstand reverse pulse voltage for a long time.

4. Small dielectric loss, small equivalent series resistance ESR, low internal temperature rise and good temperature characteristics.

5. The capacitor is non inductive rolled, with small internal inductive ESL and fast charge and discharge speed.

6. Long service life, up to more than 100000 hours.

The main product include ACB, MCCB, MCB and dual power transfer switch. The products possesses complete categories, safe and reliable performance.

Application: The GIS is composed of circuit breaker, bus bar, disconnector, PT, CT, lightning arrester, bushing, grounding switch and other components, uses SF6 gas with excellent insulation and arc extinguishing performance as insulation and arc extinguishing medium, and seals all high-voltage electric components in grounded metal shell, It is applicable to the power grid with high voltage and high capacity, and used for power distribution and control.

Features: compact structure, small floor area, high reliability, flexible configuration, convenient installation, strong safety, strong environmental adaptability and small maintenance workload.

Voltage level: 126kV, 252kV

Application: C-GIS is used in 12-40.5kV power transmission and distribution system to receive or distribute electric energy, and can control, protect, measure, monitor and communicate under normal operation or fault of power system. It can be used in electric power, metallurgy, port, construction, chemical industry, electrified railway and other places, especially suitable for underground, plateau, frozen soil, coastal, humid and other harsh environmental conditions.

Features: small floor area, all components are sealed and free from environmental interference, high operation reliability, convenient operation, long maintenance cycle, small maintenance workload, rapid installation and low operation cost.

Voltage level: 12kV, 24kV, 40.5kV

Application: it is used in power plants, substations, transformation and distribution centers of industrial and mining enterprises and starting equipment of large high-voltage motors for receiving and distributing electric energy, and controlling, protecting and monitoring circuits.

Features: safe and reliable, stable performance and convenient maintenance. It is developed by combining the structural advantages of domestic mainstream products and absorbing the advantages of foreign similar products

Voltage level: 12kV, 24kV, 40.5kV

Application: Power transformer is the main equipment of power plant and power station. It is mainly used in power grid, power generation, water conservancy, railway, aviation and various industrial and mining enterprises.

Features: Low loss, low temperature rise, low noise, low partial discharge, high insulation strength, high short circuit resistance, strong overload capacity, high operation efficiency, energy conservation and environmental protection, no hanging core required on site, etc.

Voltage level: 35kV ~ 750kV

Application: Traction transformer is used to transfer the electric energy of three-phase power system to two single-phase traction lines with load. Two single-phase traction lines supply power for up and down locomotives respectively, which are mainly used for urban subway and rail transit power supply system.

Features: Reliable insulation strength, strong short-circuit resistance, high overload capacity, high operation efficiency, low noise, energy conservation and environmental protection

Voltage level: 110kV ~ 220kV

Application: According to the actual working conditions and user needs, the company can develop and manufacture porcelain bushing capacitors for AC and DC systems with different special purposes.

Features: The carrier frequency range is 30 ~ 500KHz, with beautiful and compact appearance, large insulation margin, small dielectric loss, low partial discharge, small temperature coefficient and high mechanical strength.

Disk suspension toughed glass insulator is the company's main product, with more than 50 years of production history, sales covering the whole country and exported to more than 80 countries and regions. There are AC and DC series, with strength grade of 40kN-840kN with various umbrella structures. The products can reach the leading level compared with the similar products in the world.

Anti-drop glass insulator is a product developed by the company, which perfectly eliminates the damage to the environment and personnel caused by the self-explosion and scattering of glass insulator. It is especially suitable for densely populated areas such as plains, cities and towns, farmland, stations and other environments. There are AC and DC series, with strength grade of 40kN-840kN, with various umbrella structures.

Application: Capacitive voltage transformer can provide voltage signals for electrical measuring instruments, protection and control devices in high voltage, ultra-high voltage and ultra-high voltage power systems with rated frequency of 50Hz, and also serve as coupling capacitors in power line carrier coupling devices.

Application: The oil immersed current transformer is an outdoor single-phase oil immersed fully sealed structure, which is widely used in transmission lines with a frequency of 50Hz and a rated voltage of 110kV ~ 220kV. The oil immersed current transformer is a device for measuring by converting a large current at the primary side into a small current at the secondary side according to the principle of electromagnetic induction. It is connected in series in the line and provides current signal for electrical measuring instruments, instruments and protection and control device.

STATCOM is mainly used to provide dynamic reactive power and voltage support to the power grid. The device parallels the voltage source converter to the power grid through the reactor or transformer, automatically adjusts the amplitude of the AC measured output voltage of the converter, quickly absorbs or sends out the required reactive power, so as to realize the purpose of rapid dynamic voltage regulation and enhance the operation stability of the system.

Our company has a variety of protection relays. Among them, DCR series protection relays are applicable to the protection, measurement and control of incomer, feeder, negative pole and rail potential of DC1500V or DC750V DC traction power supply system in rail transit. BYE series protection relay are applicable to measurement, control and protection of incomer and outgoing feeders, bus couplers, station transformers and rectifier transformers in AC 110kV main substation and AC 33kV (36kV / 40.5kV) main line in rail transit. ACR series is mainly used for measurement, control and protection of 27.5kV intercity lines. PDR series can be used for line overcurrent protection, line longitudinal current differential protection, bus coupler (sectional) charging protection, station transformer (grounding transformer) protection, capacitor protection, reactor protection, motor protection, automatic switching of standby power supply, fault disconnection and other application scenarios. In addition, GD7400 series configurable intelligent devices provide various types of configurable IED software and hardware platforms to facilitate users or system integrators to develop exclusive applications based on the platform.

The OIP bushing is made of insulating paper and aluminum foil alternately wound on the conductive pipe (rod) according to the design requirements. The capacitive core is installed in the upper and lower porcelain sleeves (or composite hollow insulators) connected together through the connecting flange, and then the transformer oil is injected under vacuum to realize insulation. Since the company made the first oil paper capacitive bushing in China in 1958, it started technology introduction, understood and mastered the foreign process manufacturing technology of oil paper insulation products, thus forming its own proprietary process manufacturing technology, making the technical parameters and index level of bushing reach the first-class level of foreign similar advanced products. The electric performance and insulation margin of the products are even better than those of foreign products.

It is suitable for transmission and distribution networks and industrial devices with rated voltage of 0.6/1kV and 1.8/3kV to transmit electric energy.

Voltage level: 0.6/1kV, 1.8/3kV

Insulation materials: polyvinyl chloride insulation (PVC), cross-linked polyethylene insulation (XLPE)

RdbPlus takes real-time database as the core, supports wide area distributed communication networking, so as to build a large-scale distributed SCADA platform. Each node provides data acquisition gateway service (I/O Server), real-time data service (Rdb Server), massive historical data storage and retrieval, production condition graphics configuration and WEB publishing graphics system, and opens API (C/C++, C#, Java) and WebSocket interfaces for third-party access, so as to facilitate industrial data exploring and analysis.

Application: DC traction switchgear is applicable to 750V / 1500V DC traction power supply system, mainly used in heavy rail transit, urban subway, tram and monorail railway.

Features: It introduce DC switchgear and NDC DC circuit breaker technology of British HSS company, and improve the product in combination with China's market characteristics and user needs. NDC DC circuit breaker uses the patented technology of permanent magnet operating mechanism, standardized and modular design, simple operation, very little maintenance workload, and the product life is more than 30 years, thus reducing the comprehensive cost.

Voltage level: 750V / 1500V

Application: The miniaturized switchgear based on solid, SF6 gas and air insulation is widely used in industrial and civil cable ring network and power supply terminal. It is suitable for receiving and distributing electric energy in small secondary distribution stations, switching stations, urban communities, high-rise buildings and other power systems.

Features: Compact structure, complete schemes, flexible and simple combination, good seriality and versatility, fast supply.

Voltage level: 12kV, 24kV

Application: XGW¡õ-12 SF6 fully enclosed outdoor ring main cabinet (also known as outdoor switching box) is composed of XGN24A-12 ring main unit and outer box. This series of high-voltage outdoor ring main unit can realize SCADA by adding electric operating mechanism, controller, measuring unit, RTU and communication channel and connecting with the master station according to customer requirements. It is an ideal equipment for construction, transformation, upgrading of distribution automation.

Features: fully insulated, fully enclosed, corrosion resistant, maintenance free, safe and reliable, beautiful appearance, etc.

Voltage level: 12kV, 24kV

Application: DFW¡õ-12 high-voltage outdoor cable distribution box is composed of 12kV cable accessories, high-voltage electric equipments (optional) and outer box. It is mainly used at the cable contact of the ring network system with rated frequency of 50Hz and voltage level of AC 12kV to distribute electric energy. It is especially suitable for the cable transformation project of urban power grid, which can greatly save the investment of equipment and cables, improve the reliability of power supply.

Features: Fully insulated, fully sealed, corrosion resistant, maintenance free, safe and reliable, beautiful appearance, etc.

Voltage level: 12kV, 24kV

Application: The prefabricated substation is manufactured and assembled in the factory in advance, including transformer, high-voltage switchgear, low-voltage switchgear, internal wiring (cable, busbar), metering, compensation, lightning arrester and other auxiliary equipments, which are configured in a common shell or a group of shells. It is an outdoor complete set of equipment that has passed the test according to the corresponding standards.

Voltage level: 12kV, 24kV, 40.5kV

Application: Suitable for power supply and distribution system with the frequency of AC 50Hz and rated working voltage below 400V, used for receiving and distributing electric energy, and controlling, protecting and monitoring the circuit.

Features: Strong current carrying capacity, high insulation level, large breaking current, reliable performance, mature technology and complete models, which can meet the needs of different power users such as substation, power plant, iron and steel metallurgy, municipal infrastructure, food and medicine, rail transit, data center, power plant and nuclear power.

Voltage level: 400V / 690V

Application: According to the requirements of electrical wiring, The switch, measuring instruments, protective appliances and auxiliary equipment are assembled in closed or semi closed metal cabinets or panels to form a low-voltage distribution box, which can meet the needs of power supply and distribution, lighting distribution, power conversion, distribution and control, metering and lighting power distribution in different occasions.

Features: Small volume, simple installation, unique configuration, not limited by the site, common application, stable and reliable operation, less land occupation and environmental protection.

Voltage level: 400V

ZW20-12 and ZW32-12 series outdoor high voltage AC vacuum circuit breakers are mainly used for breaking and closing load current, overload current and short-circuit current in 12kV three-phase AC 50Hz transmission and distribution system, and can realize the protection of distribution network automation step by step. It is suitable for protection and control in substation and distribution system of industrial and mining enterprises. It is more suitable for rural power grid and places with frequent operation, especially for the needs of urban power grid and rural power grid construction and transformation.

FZW28-12 outdoor high-voltage AC vacuum load switch is mainly used for opening and closing load current and closing short-circuit current in 12kV three-phase AC 50Hz transmission and distribution system. It is suitable for protection and control in substation, industrial and mining enterprises and rural power grid distribution system, and is more suitable for frequent operation of power grid.

The main products include vacuum interupters for circuit breakers and reclosers, vacuum interrupters for load switches and sectionalizers, vacuum interrupters for contactors, embedded pole for circuit breakers and reclosers. They are exported to Japan, Southeast Asia, Russia and other international markets and are widely used in electric power, metallurgy, petrochemical, coal, electrified railways, urban railways, high-rise buildings, urban power grid and rural power grid control center.

Application: Rectifier transformer supplies power for rectifier device. Rectifier transformers are widely used in the fields of electrochemistry, metallurgy, traction, transmission, electrostatic precipitator, DC power supply and so on.

Features: Reliable insulation strength, strong short-circuit resistance, high overload capacity, high operation efficiency, low noise, energy conservation and environmental protection.

Voltage level: 35kV ~ 330kV

Application: Cast resin dry-type transformer can be used in various fields, especially in areas with prominent fire safety problems, including mines, oil platforms, subway stations, schools, business centers, high-rise buildings, etc.

Features: Low partial discharge, strong short-circuit resistance, good lightning impact resistance, low noise, remarkable energy-saving effect, safety, flame resistance, fire prevention, no pollution, maintenance free, simple installation, low comprehensive operation cost, good moisture resistance, etc.

Voltage level: 10kV, 20kV, 35kV

Application: Suitable for traction power supply system of urban subway, light rail and other rail transit.

Features: It has the characteristics of fire prevention, flame resistance, moisture resistance, energy saving, low noise, no pollution to the environment, simple operation and maintenance, can go deep into the load center, safe and reliable, strong short-circuit resistance, and can effectively suppress the impact of harmonics on the power grid.

Voltage level: 10kV, 20kV, 35kV

Application: Dry type step-up transformer (SCB Series) for offshore wind power tower is the main electric equipment in wind turbine. The working environment of offshore wind power is relatively bad, which is easy to cause salt fog, mold, ocean waves, changeable climate and temperature, and damp heat, which puts forward high requirements for the environmental adaptability and reliability of the equipment.

Features: The product adopts water-cooled backpack for heat dissipation, with outstanding environmental adaptability, good maintainability, strong corrosion resistance, strong short-circuit resistance, strong short-circuit resistance, and safe and reliable product operation.

Voltage level: 35kV

Application: The device is used for AC field and DC field of converter station of DC transmission project. It is used to improve the power factor of the system, filter out high-order harmonics, provide the power factor of the system and filter out the AC component of the DC system.

Features: ¡À500kV - ¡À800kV DC transmission project. World class design and manufacturing level, beautiful products, excellent performance and reliable operation.

System voltage level: 220kV ~ 1000kV.

Application: The device is used for power systems above 1kV, distribution networks of industrial and mining enterprises and electrified railways to improve the power factor of the system, reduce line loss and improve the voltage quality of the system.

Features: Reliable performance, safe operation, long service life, simple installation, convenient maintenance, compact structure and small land occupation.

Application: It is used in 1kV ~ 1000kV transmission and distribution system to compensate the inductive reactance of power line, reduce line voltage drop, increase transmission capacity and improve line stability.

Features: Safe and reliable performance, long service life, internal fuse or non-fuse design can be adopted, and the bushing adopts effective anti-leakage structure.

Application: The device is used for power systems above 1kV, distribution networks of industrial and mining enterprises and electrified railways to improve the power factor of the system, reduce line loss and improve the voltage quality of the system.

Features: Reliable performance, safe operation and long service life. The utility model has the advantages of simple installation, convenient maintenance, compact structure and small land occupation.

Application: BKMJ self-healing high voltage shunt capacitor is used in AC power system with voltage above 1kV to improve power factor, adjust voltage and reduce line loss.

Features:

1. The capacitor adopts self-healing structure, which can be self-healing during normal breakdown, and the capacitor can continue to operate.

2. Sensitive and reliable "pressure fuse" is used as the main protection to ensure that the faulty components can be removed in time without affecting the operation of surrounding components.

3. The capacitor has no liquid medium structure, no leakage, no pollution, safety and environmental protection.

4. The capacitor adopts building block stacking, which has the advantages of light structure, less land occupation and convenient installation.

Intelligent capacitor bank is a reduced version of TSC/MSC complete set device. It has small and beautiful appearance, small single capacity, suitable for occasions with low demand capacity and narrow installation space. It can also be arranged in cabinets with multiple groups of intelligent capacitors, beautiful and neat, convenient installation and simple wiring. Intelligent capacitor integrates advanced industrial technology and industrial appearance design art such as modern measurement and control, power electronics, network communication and automatic control, with smaller size and lower power consumption, convenient maintenance and long service life.

RTV coated glass insulator is a derivative product of glass insulator to meet the anti-pollution demand, which makes glass insulator have pollution resistance comparable to composite insulator. It has been adopted by many UHV Engineering lines in China. There are AC and DC series, with strength grade of 40KN-840kN, with various umbrella structures.

Composite insulators are usually composed of mandrel, silicone rubber umbrella sleeve and end fittings. They have the characteristics of small volume, light weight, strong pollution resistance and smaill maintenance. Nanjing Electric is one of the earliest manufacturers to develop composite insulators in China. It has both AC and DC series, with voltage level from 10kV to 1000kV and strength grade from 40kN to 550kN. The product performance has reached the domestic advanced level.

Disc suspension porcelain insulators are mainly used for insulating support conductors in high-voltage overhead transmission and distribution lines. According to different polluted areas, different types of insulators, such as ordinary type and anti pollution type, are selected, and the insulator string is formed according to different voltage levels.

Disc suspension porcelain insulator series are divided into: 40kN, 70kN, 120kn, 160kN, 210kN, 300KN, 420kN and 550 kN. It is used in series according to different voltage levels: 3 pieces / string for 35kV, 7 pieces / string for 110kV, 14 pieces / string for 220kV and 28 pieces / string for 500kV. Among them, suspension products with strength grade of 100kN and above are used for insulator strings with voltage grade of 220kV and above.

Line porcelain insulator has a long service history in China, which is safe, reliable and not easy to aging. The service life is generally more than 30 years, and the annual deterioration rate is less than 0.01%.

Low voltage overhead line insulators are suitable for power lines with power frequency AC or DC voltage below 1000V to support fixed conductors and insulation. It includes low-voltage pin insulator, low-voltage butterfly insulator and low-voltage spool insulator.

High voltage line post porcelain insulator is used for insulating and supporting conductor in high voltage overhead transmission and transformation line. According to the bending failure load, it is divided into four strength grades of 3kN, 5kN, 8kN and 12.5kN, and it is divided into vertical installation and horizontal installation according to its installation mode. It can be divided into top binding type and top clamp type according to its connection mode with high-voltage conductor.

This kind of products are non breakdown type. According to different use requirements, products of different specifications are selected, which are reliable, safe and have a long service life.

High voltage line porcelain cross arm insulator is mainly used for insulating and supporting conductors in high-voltage overhead transmission and distribution lines. The strength grade is divided into five specification types. It can replace suspension insulator and pin insulator. Porcelain cross arm insulator adopts solid non breakdown structure, which has the advantages of good self-cleaning performance, safety and reliability, low cost and material saving.

Pin type porcelain insulators for high voltage transmission lines are mainly used to insulate and support conductors in high voltage overhead transmission lines. It is divided into five grades of 6 kV, 10 kV, 15 kV, 20 kV and 35kV according to the rated voltage. The pin insulator is composed of porcelain and steel pin (or screw sleeve), and the porcelain and steel pin (or screw sleeve) are glued together with Portland cement. The surface of porcelain parts is white or brown, and the surface of steel feet is hot-dip galvanized.

There are many kinds of line post composite insulators. It has the characteristics of small volume, light weight, strong pollution resistance and small maintenance. Nanjing Electric is one of the earliest manufacturers to develop composite insulators in China. It has many kinds of product series, such as pin, cross arm, pillar and wind deflection prevention, with voltage grade from 10kV to 500kV and strength grade from 3kN to 20kN.

It can be used in 6 ~ 500kV rated voltage power stations, substation distribution devices, disconnectors and electric equipments to fix conductors, insulate and support.

The porcelain bushing is a hollow porcelain insulator, which is glued with the flange. Some are inserted through the guide rod, some are filled with insulating gas, and some are installed with valve pieces or different insulating media to form an electrical product, which is used to pass through the wall and box for support and insulation. There are many kinds of electrical porcelain sleeves: wall bushing, transformer bushing, SF6 circuit breaker bushing, capacitor bushing and lightning arrester bushing.

Porcelain bushing can be made into porcelain bushing products of different specifications according to different voltage levels and strength requirements. It has the characteristics of long service life and no aging. It is a common supporting facility for electrical products.

TSC adopts unique zero crossing automatic monitoring logic to switch on and off without inrush current and overvoltage, which not only improves the response speed of reactive power compensation, but also greatly prolongs the service life of the capacitor.

DC ice melting device can melt the line icing by adjusting the trigger angle of thyristor and adopting the mode of controllable rectifier power supply, which is widely used in power grid system. The capacity device of the company can be transformed into SVC operation without ice melting through reconstruction, which greatly improves the equipment efficiency.

Modular APF can filter out 2~50th harmonics, support multi machine parallel, work mode can be set independently, and support a variety of network protocols (Modbus, UDP, etc.).

It is a high-end equipment for high-capacity power conversion in the field of industrial automation and special power supply. It is characterized by high power density, high reliability, high control precision, fast dynamic response and complete customization of functions, including device characteristic research, unit development, control platform development, vector control algorithm development, complete set design and test of the whole machine, from hardware to software system development, to process control and manufacturing quality control. It realizes the customized design and service of the whole life cycle.

The dynamic voltage restorer (DVR) tracks the grid voltage in real time and quickly switches (< 2ms) to the super capacitor circuit in case of abnormality, which can greatly protect the power supply of sensitive loads (such as chip packaging, automobile manufacturing, airport, precision manufacturing and other scenes) and provide more high-quality power. DVR has been widely used in integrated circuit, power electronic chip manufacturing, aircraft, automobile, mobile phone and other manufacturing in the field of high precision requirements, and in the field of high security requirements, such as airport, hospital, IT, communication industry, etc.

GZDW series high frequency switching DC power supply provides high reliability, low loss and stable power supply system for rail transit, substation, power plant, communication room, building, hospital, industrial and mining enterprises and other scenes.

The large capacity fast charging device adopts modular design and is applied to the fast charging of super capacitor energy storage tram.

PDR-985 clock synchronization device meets the time synchronization requirements of substation, UHV AC / DC and dispatching system, and provides time synchronization services for station protection, measurement and control, phasor measurement, fault recorder, communication device, merging unit, intelligent terminal and monitoring system. It is also suitable for power plant, new energy, airport, railway, enterprise network and other applications.

Emergency power supply (EPS) is an ideal power supply to provide centralized power supply. It can provide power supply for various primary and secondary loads and fire-fighting facilities in case of power failure or other emergencies. It is widely used in municipal public facilities, subway, power plant and other scenes.

PDR-993 protection information sub-station is a new type of substation automation information integrated management device. As a platform for information collection, sorting and analysis, it can quickly, simply and comprehensively obtain fault information and communicate with the master station of fault information system.

TCR type SVC adopts high-voltage thyristor series technology and can be directly connected to 35kV with the capacity of 180Mvar. It can quickly adjust reactive power by adjusting the conduction angle of thyristor valve in real time. It has unique advantages in the field of metallurgy,steel, mining industry, especially in the treatment of large impact and unbalanced loads such as electric arc furnace.

With the continuous in-depth development of clean energy and the more and more extensive application of new energy, the demand for flexible DC transmission devices is growing rapidly, and the requirements for its performance and reliability are also increasing. HVDC smart, based on the crimped IGBT technology route, has the technical characteristics of high power density, high efficiency, high reliability, high degree of localization and strong environmental adaptability. It can provide in-depth customized solutions and full life cycle product services according to the functional and environmental requirements of engineering applications.

PDR-998 telecontrol communication device is applicable to substations of various voltage levels for data acquisition of the whole station, establishment and maintenance of unified data platform, remote data output and advanced function application. As an intelligent communication management device outside the substation, it integrates the functions of monitoring, conventional telecontrol, protection information, on-line monitoring, power metering, phasor measurement, programmed operation, video acquisition and forwarding and station level advanced applications.

The high-voltage soft start device adopts the high-voltage thyristor series technology, which is used in the motor starting process. By adjusting the conduction angle of the thyristor valve, the starting impulse current of the motor can be greatly reduced.

GD-7900 series communication gateway device is developed based on Etherne by using mature computer technology and network communication technology on the basis of summarizing many years of experience in the development and operation of substation integrated automation system to meet the needs of substation integrated automation.

High voltage SVG adopts H-bridge modular cascade technology, which can be directly connected to 35kV. Through phase-shifting carrier control technology, it can adjust the amplitude and phase of the output voltage at the AC side of the inverter in real time, quickly absorb or send out the required reactive power, so as to achieve the functions of stabilizing voltage, compensating reactive power, restraining voltage fluctuation and flicker, three-phase imbalance and so on.

GD7100 series ring communication box is developed based on high reliability seamless ring network (HSR) and parallel redundancy protocol (PRP).It can replace the traditional network switch to realize efficient networking in the station. The adoption of HSR and PRP enables the system to switch seamlessly in case of network failure, so as not to affect the control, protection and other automation services with strong real-time and high reliability.

PDR-201A is highly integrated with technologies such as " cloud computing, big data, internet of things, artificial intelligence, mobile internet" and a centralized monitoring and management platform based on multi-source data collaboration to realize intelligent, visual, automatic and interactive new modern distribution room for equipment status monitoring, real-time environmental monitoring, behavior safety control and efficient support of social services.

PDR1300 substation computer monitoring system (Linux platform) adopts object-oriented technology for system design, and the software adopts international standards such as C + +, TCP / IP, SQL, MOTIF and QT, which has good openness. The system can be widely used in substations with various voltage levels.

The rail transit power intelligent operation and maintenance master station system is developed based on IEC61850 standard model, edge computing, big data and AI technology and micro service architecture. Realizing intelligent and unmanned operation and maintenance of power system can greatly reduce the work intensity of maintenance personnel and improve maintenance efficiency.

The substation intelligent video inspection system is developed based on artificial intelligence (AI), which is established to meet the lean management requirements for the operation, maintenance and repair of intelligent substation, so as to detect the operation status and operation environment of substation equipment. The intelligent inspection of camera video is adopted as an effective alternative to manual inspection, Through the unified monitoring platform, the patrol inspection data are compared and trend analyzed to timely find the operation of power equipment in the substation and the potential safety hazards and fault precursors in the environment, improve the automation and intelligence level of substation operation and maintenance, and ensure the safe and reliable operation.

The distribution automation feeder terminal realizes the remote signaling, telemetry and remote control of the switch on the column, and is equipped with protection, feeder automation and other functions.

As a centralized distribution automation terminal, the terminal of distribution automation station has the functions of remote signaling, telemetry, remote control, communication, protection and so on.

Distribution terminal encryption box is mainly used for information security upgrading and transformation of distribution automation terminal, and meets the communication security upgrading requirements of distribution automation feeder terminal unit (FTU), transformer terminal unit (TTU) and distribution terminal unit (DTU).

Intelligent distribution terminal unit / smart hybrid terminal unit is a secondary equipment integrating the functions of power consumption information acquisition, equipment operation status monitoring, intelligent control and communication, which meets the requirements of basic operation information monitoring and analysis, power quality monitoring, demand side management, operation and maintenance management and control of low-voltage distribution network, information model standardization, coordinated control of master station terminal, etc, It is the key link to realize the intellectualization of low-voltage distribution network.

The modular low-voltage distribution box is used to connect temporary power or power consumption scenarios such as venues or temporary large-scale activities. The distribution box can be connected flexibly, quickly, safely and reliably. Standardized access, safe access and intelligent access are realized through modular low-voltage distribution box. This product has been used in Beijing Winter Olympic Games.

Single phase intelligent power meter is designed with the most modern microprocessor. It has the characteristics of comprehensive measurement function, high precision and convenient installation.

The three-phase intelligent power meter takes the industrial microprocessor as the core, with high processing speed, modular design, flexible configuration and convenient function expansion.

The intelligent temperature and humidity controller adopts a variety of technologies such as microprocessor technology, sensor technology and computer. It uses a high-precision temperature and humidity sensor to measure the environment with high brightness LED display, and carry out comprehensive control according to different operating states. It is suitable for on-line monitoring of low and high temperature, automatic heating and dehumidification, low temperature automatic heating and high temperature automatic exhaust of terminal box, high and low voltage switchgear, transformer, prefabricated substation, circuit breaker and other equipments.

The AC switch action characteristic monitoring device is applicable to the voltage level of 110kV and below, can record the opening and closing process of the circuit breaker and the waveform when the current and voltage are abnormal, and can read the current and voltage waveform in real time for power quality and waveform analysis. The device integrates wave recording, measurement, monitoring, communication and other functions.

The DC switch action characteristic monitoring device is applicable to 750V and 1500V voltage levels. It is used for the rail transit DC traction power supply system to record the opening and closing process of the circuit breaker and the waveform when the current and voltage are abnormal. It can read the current and voltage waveform in real time for power quality and waveform analysis. The device integrates wave recording, measurement, monitoring, communication and other functions.

8GB4 manual operation box is a controller for subway ventilation system. It can remotely operate the fan with PLC. The whole manual box control system consists of manual box, coupler and junction box. The coupler is connected with the manual operation box through the CAN bus, and up to 31 manual operation boxes can be hung 

The new generation of air valve controller developed by the company is suitable for subway ventilation control system. It cooperates with PLC, air valve travel switch and air valve motor to control the opening or closing of air valve and improve the safety of the system.

The double side tripping device is used to realize the DC switch tripping function between two metro traction stations. At present, the DC switch cabinet for metro traction power supply adopts multi-core control cable to transmit electric pulse signal to realize the joint tripping function of DC switch between two traction stations. Although the scheme is mature and the reliability meets the requirements, it will cause problems such as complex design, difficult construction and maintenance, limited transmission distance and lack of signal channel monitoring.FMT100 uses optical cable instead of cable to transmit signal, and realizes the function of replacing multi hop cable by means of communication and logic programming, which can make the whole design, construction and maintenance process simple and easy.

PDR1800 distribution intelligent centralized control system (Linux platform) adopts object-oriented technology for system design, and the software adopts international standards such as C + +, TCP / IP, SQL, motif and QT, which has good openness. The system can be widely used in various centralized control centers of power transformation and distribution.

The DC traction protection tester is applicable to the DC traction system of rail transit. The device mainly realizes the functional test of DC traction protection device and DC transmitter, and cooperates with relevant maintenance software to make the tester carry out accuracy test, response time test and relevant input and output curve drawing within the range. The whole test system consists of embedded tester device and host computer software.

The main insulation of RIP bushing is the resin-impregnated paper capacitor core, which is alternately wound on the conductive pipe (rod) with insulating paper and aluminum foil according to the design requirements, impregnated with epoxy resin mixture under vacuum and cured at high temperature. The capacitor core is sealed and assembled into the dry type RIP bushing through the connecting flange and porcelain sleeve (or composite hollow insulator).This kind of casing truly realizes dry and oil-free. Since its invention in 1960, it has been widely used in Europe, America, Japan and other countries with its unparalleled advantages of OIP bushing. The company fully introduces talents with many years of manufacturing experience and German automatic manufacturing equipment to realize the high-quality production.

The main insulation of the RIF bushing is the resin impregnated fiber dry capacitor core. The capacitor core is made of glass fiber with high insulation performance, impregnated with ultra-low viscosity high temperature resistant epoxy resin, wound and overlapped by microcomputer controlled winding equipment according to geodesic to form an insulation layer, and the capacitor screen is made of semiconductor conformal material. The insulating layer and the capacitor screen are alternately wound and arranged at intervals, and the pure solid capacitor core is made by high temperature curing. The connecting flange is made of high-strength aluminum alloy and glued with the capacitor core. The climbing umbrella skirt is bonded to the surface of the capacitor core by silicone rubber injection molding to form an organic whole with the capacitor core. Since its invention by the company in 2001, the product has won high praise from the majority of users for its advantages of small volume, light weight, maintenance free, high mechanical strength and safe and reliable operation. The application has increased year by year. At present, the cumulative operation has reached more than 100,000 pieces.

The structure mainly comprises a porcelain sleeve, a flange and a current carrying conductor. The porcelain sleeve and the flange are connected by binding, and the current carrying conductor is fixed at the end of the porcelain sleeve. When connected with the transformer, the transformer oil enters the porcelain bushing, and the transformer oil and the porcelain bushing form a high-voltage insulation.

It is used for fixed wiring or removable laying with rated voltage of 450 / 750V and below.

Voltage level: 300 / 300V, 300 / 500V, 450 / 750V (i.e. rated voltage of 450 / 750V and below)

Insulating materials: PVC insulation, cross-linked polyolefin insulation and polyolefin insulation

It is suitable for control, monitoring circuit and protection circuit with AC rated voltage U0 / U of 450/750V and below. It is used as control wiring between electric equipments.

Voltage level: 450/750V

Insulation material: PVC insulation, XLPE insulation

It is a kind of transmission cable for lines with rated voltage of 0.6/1kV ~ 26 / 35kV in high-rise buildings, power plants, nuclear power stations, tunnels and other important places.

Voltage level: 0.6/1kV, 1.8/3kV, 6/6kV, 6/10kV, 8.7/10kV, 8.7/15kV, 12/20kV, 18/20kV, 18/30kV, 21/35kV, 26/35kV (i.e. rated voltage 0.6/1kV ~ 26/35kV)

Insulating material: XLPE insulation

Overhead insulated cable is suitable for overhead fixed laying and household line.

Voltage level: 1kV, 10KV

Insulation material: PVC insulation, XLPE insulation

The conductor has the characteristics of simple structure, high rated breaking force and high conductivity, convenient erection and maintenance, low cost, large transmission capacity, and is conducive to laying across rivers, valleys and other special geographical conditions. Therefore, the product is widely used in various transmission and distribution lines.

The imported high-quality 110kV insulating material and the Swiss zhongbach on-line polarization measuring equipment are adopted. The insulation eccentricity is ¡Ü 5%, which is better than the stipulated requirements of ¡Ü 15% in the national standard GB/T 28427-2012. The product technology has reached the international leading level.

The domestic high-quality 35kV insulation material is adopted, the Swiss zhongbach on-line polarization measuring equipment is introduced, and the full dry crosslinking production line is adopted. The insulation eccentricity is controlled to be ¡Ü 5%, which is better than the stipulated requirements of ¡Ü 15% in national standard GB/T 12706-2020. The product has been granted a utility model patent, and the product technology has reached the international leading level. It is widely used in nearly ten domestic well-known subway lines such as Guangzhou Metro Knowledge City branch line, line 14 and line 21.

1500V DC cable is mainly used for DC power supply system with voltage not exceeding 1500V. It is divided into cross-linked polyethylene insulation and ethylene propylene rubber insulation. The product has been granted utility model patent, and the technology has reached the international leading level. It is widely used in nearly ten domestic well-known subway lines such as Guangzhou Metro Knowledge City branch line, line 14 and line 21.

The products are widely used in high-rise buildings, hotels, hospitals, airports, rail transit and schools with rated voltage of 0.6/1kV and below. It is mainly applicable to the equipment that needs to continue to work for a certain time in case of fire, such as emergency power supply, fire pump, fire elevator, fire smoke exhaust fan, emergency evacuation lighting and other cables.

The frequency converter cable with rated voltage of 0.6/1kV is mainly used for the connection of frequency converter power supply and frequency converter motor. It has the characteristics of strong anti-interference, strong durability and good transmission performance. It is generally widely used in papermaking, metallurgy, metal processing, food and other processing fields.

EconWorx electromechanical internet of things cloud platform is an industrial software for electromechanical equipment system monitoring, scheduling and operation and maintenance management. EconWorx takes the distributed real-time database RdbPlus as the core, integrates the open-source distributed database Hadoop and relational database to build the data center. The service platform layer develops the basic management toolbox based on the micro service framework, and the application layer invokes the platform service API to quickly realize the application APP of the solution in the professional field. EconWorx has the characteristics of high reliability, high availability, cross platform and easy scalability. The application of EconWorx can realize the visual real-time monitoring, production scheduling, energy-saving control and preventive operation and maintenance management of large-area electromechanical systems. It is widely applicable to rail transit, power plants, distributed power energy, intelligent water affairs, internet of things and other fields.

B-ISCS integrated monitoring system adopts computer network, automatic control, communication, distributed and other technologies to conduct unified monitoring and centralized control for multiple disciplines such as power, electromechanical, passenger information, fire alarm, closed-circuit television, access control, screen door, etc. Users can easily and effectively monitor and manage the operation of relevant electromechanical systems in operation, realize information sharing and linkage control of various disciplines, improve operation and maintenance efficiency. It has five advantages of massive, reliable, flexible, efficient and high performance, break through the bottleneck of industrial data processing, and fully meet the needs of operation refinement and expansion.

Based on the cloud platform, apply self-developed products and technologies, aiming at the applications in the field of rail transit in 5G/WIFI6, cloud computing, big data, industrial internet of things platform, combined with new technologies such as BIM+GIS 3D map visualization, AR and digital twin, build a passenger service-oriented integrated monitoring system for intelligent operation and maintenance and intelligent dispatching.

Baiyun B-PSCADA takes advanced and efficient real-time database as the core design, and adopts hierarchical and distributed integrated structure. It can not only realize the "four remote" (i.e. remote signaling, remote control, telemetry and remote regulation) functions for each substation equipment to monitor the operation of power supply system equipment, but also realize the comprehensive functions such as accident abnormal alarm, event record, statistical report, electric energy cost monitoring and load management.

The environment and equipment monitoring system, referred to as BAS system for short, is an automatic monitoring system for the monitoring of relevant electromechanical equipment in stations, yards and tunnel sections of the whole subway line. It will monitor the operation status and system parameters of equipments mainly including tunnel ventilation system equipment, large station / depot ventilation and air conditioning system, small ventilation and air conditioning system, air conditioning water system equipment, water supply and drainage equipment, escalator, elevator, rolling shutter door, lighting system (including intelligent lighting system), emergency lighting power supply, section water supply and drainage, flood gate and other equipments, as well as ambient temperature and humidity parameters of station public area and equipment room.

B-PHM fault prediction and health management system comprehensively collects monitoring parameters, electrical parameters, environmental parameters, status parameters, video data, factory data and maintenance data at key positions of power supply equipment through online monitoring, system access and manual input;

The AI algorithm is used to clean the data of power supply equipment state parameters and train the intelligent prediction model. At the same time, the trend of relevant temperature and vibration is predicted, and the video data is automatically identified and analyzed.

The intelligent model is applied to realize the functions of on-line monitoring, condition evaluation and life prediction of key positions of equipment, and provide corresponding maintenance strategies for each equipment.

The integrated energy management system is developed based on internet of things, big data, cloud computing and other technologies. It has the functions of data acquisition, alarm management and energy monitoring. It provides users with online monitoring, energy consumption analysis, report, energy control and other services to help enterprises realize energy management scheme quickly, low cost and zero risk.

Based on the internet of things, cloud platform, intelligent operation and maintenance and other technologies, the power distribution integrated management and control platform collects important information such as power supply operation data and environmental data of the distribution room through IOT equipment such as instruments, sensors and cameras, so as to realize the functions of system online monitoring, fault alarm, data analysis, energy management and asset management, and effectively improve the operation safety of the power room. Keeping the reliability, it also brings new digital operation and maintenance experience services to users, improves operation and maintenance efficiency, and reduces cost and increases efficiency for enterprises.

The intelligent operation and maintenance system of B-ECPS high efficiency chiller room of Yangxin company aims to participate in the early design project construction, automatic control scheme, monitoring platform and the whole life cycle of the later operation and maintenance room, deepen the details of specific parts such as equipment selection, design optimization, automatic control optimization, management platform and fault detection, and comprehensively consider the optimization space of the central air conditioning system.

YXM-100 background monitoring system not only has basic monitoring and data acquisition (SCADA) functions, but also includes monitoring, information acquisition, analysis and management functions of microcomputer protection equipment, as well as communication and management information system(MIS) interconnection and the ability to form a larger scale information system. YXM-100 background monitoring system is a comprehensive multi-functional system platform based on the latest software and hardware technology, integrating our research and development experience in SCADA system, substation automation system and protection information management system, and referring to similar products at home and abroad. It can be widely applied to various power station automation system and meet the information requirements of different management departments.

The power quality analysis system is mainly used to analyze the AC voltage of 110kV and below in the medium scenarios of power grid and rail transit. It can record the waveform during the opening and closing process of circuit breaker or when the current and voltage are abnormal, and can read the current and voltage waveform in real time for power quality and waveform analysis. It has the functions of historical electrical data, real-time wave recording data, historical data copy, historical maximum data curve, historical power factor data curve, fault event recording, etc. The power quality analysis system has the characteristics of beautiful interface, simple operation, comprehensive display data and perfect analysis function. It is a ideal tool for on-line monitoring in communication.

The waveform analysis system can display the waveforms of multiple stations and equipment in the same interface at the same time, including both AC wave recording device and DC wave recording device, so as to compare the waveform information of different equipment at the same time. AC wave recorder and DC wave recorder have high-precision synchronous time synchronization function. The waveform analysis system has beautiful interface and simple operation, and has the following functions:

1.Record the voltage, current and corresponding switching value information of multiple stations and multiple AC and DC equipment in real time, and save the data;

2.It can carry out harmonic analysis and vector analysis;

3.It can save historical data and make statistics on the latest value data and electricity data;

4.It can record faults and open the fault recording waveform for analysis;

5.Alarm records and log records can be stored, and relevant records can be stored in tabular form;

The DC line network health management system collects the electrical quantity data of key DC line network equipment such as DC switchgear, DC disconnector, DC feeder cable, internet cable, catenary and negative return rail in real time through various synchronous data acquisition terminals, and uploads them to the cloud in real time. The platform software analyzes and calculates the historical and real-time data of each equipment, node and branch of DC line network, and evaluates the current operation health status and existing safety risk points of each equipment and line of DC line network. The system can replace a large number of manual inspection of DC line network, make up for the blank of safe operation monitoring of equipment in the existing DC line network, improve the operation level of the existing DC line network, and greatly reduce the operation and maintenance cost of metro power supply system. The software system has the characteristics of integrating multiple sub functional modules into one system, convenient operation and clear contrast.