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.

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.

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.

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.

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.

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.