The TH3015 transformer partial discharge online monitoring system employs the signal sensing technology, anti-interference technology and advanced computer analysis method for online monitoring of transformer partial discharge. The system adopts ultrasonic, UHF and high-frequency current electric acoustic partial discharge detection technology to achieve partial discharge monitoring, which can realize analysis of discharge information such as the maximum discharge amount, discharge phase, discharge times, and average discharge amount of the main transformer UHF partial discharge.

The PRS-7789 smart terminal is a smart terminal device fully supporting digital substations. It provides digital interfaces for traditional circuit breakers and has the function of a local operation box. It can be used as an intelligent accessory for traditional circuit breakers. The PRS-7789 smart terminal receives the controlcommand from associated bay layer equipment through the optical fiber GOOSE network or point-to-point optical fiber connection, completes the operation of circuit breaker, and collects the relevant state signals of the circuit breaker and sends it to the bay layer equipment through the optical fiber.

The PRS-7921 online monitoring comprehensive processing unit is an intelligent communication management terminal for substation developed by CYG SUNRI. It can be used for receiving the state data of various online monitoring devices in the station, gathering, displaying, processing and storing the data, and forwarding relevant data to the higher-level online monitoring main station.The PRS-7921 online monitoring comprehensive processing unit can complete unified information modeling, unified data collection, unified data storage, unified data processing, and unified data export in the station. In addition to the standard DL/T 860 communication protocol, PRS-7921 also supports the access and upload of various power system protocols, modularization of the communication interface, and flexibly expansion of the protocol method according to the requirements onsite.