Capacitance-based optical fiber partial discharge detection device and detection method

Abstract

The invention discloses a capacitance-based optical fiber partial discharge detection device and a detection method. The capacitance-based optical fiber partial discharge detection device comprises a rod-plate electrode partial discharge system and an optical fiber partial discharge detection system, wherein the rod-plate electrode partial discharge system comprises a workbench, the top of the workbench is sleeved with a rod electrode, a copper plate electrode is arranged at the bottom of the workbench and corresponds to the rod electrode, the copper plate electrode is grounded, one end, away from the copper plate electrode, of the rod electrode is connected with a high-voltage power supply, and the high-voltage power supply is grounded; the optical fiber partial discharge detection system comprises an optical fiber partial discharge detection sensor, the optical fiber partial discharge detection sensor is connected with an optical fiber sensor demodulator, and the optical fiber sensor demodulator is connected with a computer. The device can accurately measure signals generated by partial discharge, and has the characteristics of high measurement precision, simple structure, strong anti-interference capability, fast response speed and small size.

Description

technical field [0001] The invention belongs to the technical field of partial discharge detection equipment, relates to a capacitance-based optical fiber partial discharge detection device, and also relates to a detection method using the device. Background technique [0002] With the rapid growth of electricity use and rapid economic development, the transmission capacity of the power system has been continuously increased and the voltage level has been continuously improved. Therefore, the stable, safe and reliable operation of the power system is becoming more and more important. Among them, partial discharge is an important symptom and manifestation of insulation faults. Partial discharge detection can be used to judge the insulation status of power equipment in advance to realize fault warning. Partial discharge is an important reason for the final insulation breakdown of high-voltage electrical equipment, and it is also an important symptom of insulation degradation....

AI Technical Summary

Problems solved by technology

Among them, the sensitivity of the Michelson method detection system is not high, and there are multi-path problems in ultrasonic propagation; the optical fiber Mach-Zehnder interference type has the problems of small measurement range, low stability and high cost.

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