SF6 spark discharge energy analysis method

A technology of spark discharge and energy analysis, applied in analyzing materials, measuring electrical variables, measuring electricity, etc., can solve problems such as social and economic development losses, equipment outage maintenance, etc.

Pending Publication Date: 2020-11-03
STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The important components included in the GIS are SF6 gas-insulated electrical equipment. Once a discharge or overheating fault occurs in the S

Method used

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  • SF6 spark discharge energy analysis method
  • SF6 spark discharge energy analysis method
  • SF6 spark discharge energy analysis method

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Embodiment Construction

[0027] The present invention will be further described below in conjunction with drawings and embodiments.

[0028] The general idea of ​​the present invention is: use the controllable high-voltage AC power supply with a voltage regulating table to obtain the required DC power after rectifying the high-voltage silicon stack; The relay control circuit controls the single-pole double-throw switch - the opening and closing of the relay realizes the DC power supply to charge the capacitor, and then the charging capacitor discharges to the spark discharge to simulate the defect of the tank to discharge and generate sparks. Adjust the voltage of the voltage regulator so that the charge and discharge capacitors store energy at different voltage levels, and obtain the decomposition products of SF6 spark discharge gas under different energies, and analyze the gas components on the gas chromatograph and gas chromatograph / mass spectrometer by collecting the gas.

[0029] The present inve...

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Abstract

The invention discloses an SF6 spark discharge energy analysis method. The method comprises the following steps: rectifying a high-voltage alternating-current power supply through a high-voltage silicon stack to obtain a required direct-current power supply; adopting a direct-current power supply to charge the charging capacitor, and enabling the charging capacitor to store energy of different voltage levels; storing energy charging capacitors with different voltage levels to respectively discharge the defects of the spark discharge simulation tank body and generate sparks; and measuring the voltage and the current of the spark discharge gap at the spark moment to calculate the SF6 spark discharge energy. According to the method, quantitative discharge can be carried out on the defects ofthe spark discharge simulation tank body, and regular sparks are generated, so that subsequent research on SF6 spark discharge can be carried out under a quantitative condition.

Description

technical field [0001] The invention relates to the technical field of power equipment failure analysis, in particular to an SF6 spark discharge energy analysis method. Background technique [0002] Gas Insulated Switchgear (GIS for short) is one of the important electrical equipment in the power system, and its safety and reliability play a vital role in the stable operation of the power system. The important components included in the GIS are SF6 gas-insulated electrical equipment. Once a discharge or overheating fault occurs in the SF6 gas-insulated electrical equipment and the equipment is shut down for maintenance, social and economic development will suffer heavy losses. [0003] In the production, manufacture, transportation and operation of SF6 gas-insulated electrical equipment, there will inevitably be inherent insulation defects in different forms and degrees. Under normal operating voltage, the electric field at some inherent insulation defects will increase shar...

Claims

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Application Information

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IPC IPC(8): G01R31/12G01R29/04G01R19/00G01R15/18G01N30/72G01N30/06G01N30/02
CPCG01R31/1227G01R19/0053G01R15/181G01R29/04G01N30/02G01N30/06G01N30/72
Inventor 姚强苗玉龙陈咏涛张施令邱妮杨华夏
Owner STATE GRID CHONGQING ELECTRIC POWER CO ELECTRIC POWER RES INST
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