Detecting system and method for partial discharge detecting sensor of GIS (gas insulated switchgear)

Abstract

The invention provides a detecting system and method for a partial discharge detecting sensor of GIS. The method comprises steps as follows: detecting and verifying the GIS partial discharge detecting sensor; detecting and verifying a GIS partial discharge UHF (ultra high frequency) sensor; and detecting and verifying a GIS partial discharge ultrasonic and UHF sensor positioning system. The system comprises a system GIS tank, a high-voltage sleeve, grading rings, basin-type insulators, a built-in camera, typical GIS defect models, a standard UHF sensor, a to-be-detected UHF sensor, an ultrasonic signal injection port, a UHF signal injection port, ultrasonic sensors, an ultrasonic partial discharge positioning system and a UHF partial discharge positioning system. The system and the method solve the problems that performance differences of ultrasonic sensors and UHF sensors of manufacturers cannot be compared and the performance of GIS partial discharge detecting systems of the manufacturers cannot be compared.

Description

technical field [0001] The present invention relates to a system and method in the field of intelligent electrical appliances, in particular to a detection and verification system and method for a partial discharge detection sensor of a gas-insulated combined electrical appliance (GIS). Background technique [0002] Gas insulated switchgear (GIS) is widely used in the field of high-voltage transmission because of its small footprint, less maintenance workload, excellent insulation performance, and high reliability. With the continuous increase of the grid voltage level and system capacity, the internal faults of GIS equipment also increase. When GIS fails, the maintenance is complicated, the repair time is long, the affected area is large, and the consequences are serious. method is particularly important. At present, it is mainly realized through the detection of partial discharge in the world. The partial discharge (PD) signal contains a wealth of insulation state inform...

AI Technical Summary

Problems solved by technology

[0006] At present, there is no calibration standard for ultrasonic sensors and ultra-high frequency (UHF) sensors for measuring GIS partial discharge in China, which leads to incomparable performance differences between ultrasonic sensors and ultra-high frequency (UHF) sensors among various manufacturers. The problem that the performance of partial discharge detection system cannot be compared

Images