An intelligent gis partial discharge ied test circuit and method

Abstract

The invention discloses an intelligent GIS partial discharge IED test loop and method, and the test loop comprises a partial discharge signal generator, a partial discharge IED probe, a coupling capacitor Ck, a coupling device CD, a partial discharge measurement system MI, and a test power supply U. The high-voltage end of the test power supply U is connected with the coupling capacitor Ck and the coupling device CD, and the other end of the coupling device CD is connected with the lower end of the test power supply U and is also grounded. The partial discharge measurement system MI is connected with the coupling device CD. The high-voltage end of the test power supply U is connected with one end of a bus passing through a GIS housing, and the GIS hosing is grounded. The partial discharge IED probe stretches into the GIS housing, and a signal transmitting end of the partial discharge signal generator stretches into the GIS housing, and is used for generating a partial discharge signal. The test loop is simple. Only if a hand-window type discharge gap is made on an intelligent GIS housing, can the test loop achieve the purposes of improving the partial discharge voltage, improving the testing efficiency and protecting the environment.

Description

Technical field [0001] The invention belongs to the technical field of high-voltage tests, and relates to an intelligent GIS partial discharge IED test circuit and method. Background technique [0002] Gas-insulated metal-enclosed switchgear (hereinafter referred to as: GIS) has the advantages of small footprint, all components are enclosed without interference from the external environment, reliable operation, and long overhaul period. It is popular with users, but there are also some problems: due to the internal GIS It has the characteristics of compact structure, difficult to disassemble, and difficult maintenance. When a fault occurs in the GIS, it is difficult to locate the fault point, which further increases the difficulty of troubleshooting, so intelligent GIS came into being. [0003] The intelligent GIS partial discharge IED is mainly used to monitor the discharge defects of the intelligent GIS equipment, and perform online monitoring and positioning of the equipment def...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide an intelligent GIS partial discharge IED test circuit and method, which solves the problems of large differences in test results, low partial discharge test voltage, and inability to adjust the partial discharge phase and partial discharge amount when performing the intelligent GIS partial discharge IED test. , low efficiency and environmental pollution

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