Check verifying device and method for supersonic partial discharge on-line monitoring system

Abstract

The invention proposes a check verifying device and method for a supersonic partial discharge on-line monitoring system. The device comprises a remote operation platform, a signal excitation source, and a supersonic transmitting module. The remote operation platform transmits a signal instruction to the signal excitation source in a 3 / 4G or WiFi communication mode, and the signal excitation source receives the signal instruction and then outputs a corresponding signal to the supersonic transmitting module. The supersonic transmitting module is placed on the surface of GIS equipment, and transmits a supersonic signal to the interior of the equipment. A supersonic sensor detects and transmits the supersonic signal to a partial discharge front end, and the partial discharge front end enables the processed signal to be transmitted to a partial discharge detection terminal. The device is easy to implement, and the signal excitation source is convenient to use on site. The operation platform is simple and diversified in operation, and the supersonic signal is stable and reliable. The device can effectively check the detection sensitivity, linearity and stability of the supersonic partial discharge on-line monitoring system.

Description

Technical field [0001] The invention relates to the technical field of high-voltage detection, in particular to an evaluation and verification design method of an ultrasonic partial discharge online monitoring system. Background technique [0002] In the high-voltage substation site, in order to monitor the insulation status of GIS and other equipment for a long time, ultrasonic sensors are often installed on the field equipment. The ultrasonic signals transmitted from the inside are converted into electrical signals through the ultrasonic sensor and sent to the partial discharge detection front end. The partial discharge detection front end will The processed signal is fed back to the partial discharge detection terminal to analyze the insulation status of the equipment. This monitoring method is ultrasonic partial discharge online monitoring. However, due to the various types of on-site GIS monitoring systems in domestic substations, the performance is uneven, and the effective...

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Problems solved by technology

However, because there are many types of GIS online monitoring systems in substations in China, the performance is uneven, the effective signal monitoring is uncertain, and the internal defects of GIS cannot be found in time, which greatly affects the safety and reliability of GIS, and brings great harm to the safe operation of GIS. major hidden danger

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