The GIS online monitoring mode provided by this system is ultra-high frequency monitoring mode (ultra-high frequency and ultrasonic joint monitoring mode can also be selected), and ultra-high frequency partial discharge detection technology is currently widely used as a state detection technology for GIS equipment. According to the research on GIS partial discharge detection methods by the CIGRE WG33/23-12 working group of the Power Grid Conference, it is believed that the ultra-high frequency (UHF) method has good anti-interference ability, a large detection range, and is sensitive to all types of discharges.

The integrated cloud platform fault diagnosis system and evaluation diagnosis system can instantly and real-time monitor the comprehensive operation of electrical equipment. The signal capture, prediction, decision-making, and even alarm of the sudden change process will increase the accuracy and credibility by multiple times compared to previous fault diagnosis systems.

2. Strong anti-interference ability and accurate monitoring data: This partial discharge monitor adopts a fully sealed multi cavity shielding design, which has extremely strong electromagnetic compatibility and anti-interference ability; And equipped with analog digital hybrid filtering function, it can filter out interference signals such as generator excitation and wireless telegraphy, and achieve online monitoring of partial discharge in strong interference environments.

3. Convenient equipment management: Several monitoring devices in the station can operate independently, record data separately, and can also manage multiple devices uniformly. Monitoring devices can be added at any time.

4. Large storage capacity and convenient data backup: With a data retention period of no less than 10 minutes, the data can be continuously saved for no less than 1 year, and can be uploaded to the network at any time using a laptop or computer for data backup.

The diagnostic software includes a partial discharge analysis interface that complies with the IEC60270 standard, as well as functions such as historical trend analysis, fault diagnosis, and localization.

The 6 cloud platform software has powerful partial discharge trend analysis function, which continuously records and automatically saves discharge amount, trend chart data, and alarm events, and can be viewed and analyzed at any time. Real time waveforms can also be observed at any time.

7. Realize remote data transmission through the Internet and mobile network, and conduct remote online monitoring and operation analysis of high-voltage electrical equipment.

Analysis and calculation of partial discharge parameters such as 8 discharge amounts, current discharge amount, and discharge frequency, with multiple display modes including real-time waveform, PRPS, PRPD statistical chart, etc.

9 has various functions such as trend chart analysis of partial discharge signals, automatic alarm function, historical record query, historical trend chart query, and alarm record query.

10. Positioning function: It can determine the position of the discharge source by analyzing real-time waveforms and statistical graphs.

The GIS online monitoring system consists of sensors, signal transmission cables, on-site monitoring units, backend monitoring hosts, and software. Each on-site monitoring unit can be connected to up to six ultra-high frequency sensors, which are connected via a bus and transmit data to the backend monitoring host for data analysis and processing.