Partial discharge decomposition simulation experiment method of direct current gas insulation electrical device

An electrical equipment, partial discharge technology, applied in the direction of testing dielectric strength, etc., can solve problems such as PD simulation experiments that cannot be performed under DC conditions

Active Publication Date: 2016-05-04
WUHAN UNIV +6
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Currently domestic and foreign in SF 6 The research on PD on-line monitoring of gas-insulated electrical equipment mainly focuses on AC conditions, and the existing SF 6 Simulation experiment devices and methods for faults of gas-insulated electrical equipment, such as the patent No. ZL201010504048.8 "Comprehensive Evaluation Method for Insulation State of Sulfur Hexafluoride Electrical Equipment" and the patent No. ZL2007100784930 "Analysis of Sulfur Hexafluoride Discharge Decomposition Components" System and its method of use" patents, all only for SF under AC conditions 6 Simulation of PD experiments on gas-insulated electrical equipment, obtaining only SF 6 PDSF for gas-insulated electrical equipment under AC conditions 6 Experimental data such as gas decomposition components and discharge waveforms cannot be used for PD simulation experiments under DC conditions.

Method used

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  • Partial discharge decomposition simulation experiment method of direct current gas insulation electrical device
  • Partial discharge decomposition simulation experiment method of direct current gas insulation electrical device
  • Partial discharge decomposition simulation experiment method of direct current gas insulation electrical device

Examples

Experimental program
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Effect test

Embodiment 1

[0066] a SF 6 The simulation experiment method of PD of gas-insulated electrical equipment under DC conditions, using the "Simulation device for partial discharge of sulfur hexafluoride gas-insulated electrical equipment under DC conditions" applied by the applicant, for SF 6 The specific steps for the simulation experiment and analysis of PD under DC conditions for gas-insulated electrical equipment are as follows:

[0067] ⑴Experimental preparation

[0068] ① Place insulation defects and check the sealing performance of the gas discharge chamber

[0069] First follow figure 1That is, the schematic diagram of the test circuit connects each test device to ensure that all test devices are well grounded. Open the elliptical top cover 15 of the stainless steel cylinder 14 of the gas discharge chamber 9 and carefully clean the stainless steel cylinder 14 inwall and the artificial defect model with ethanol, remove impurities and dust in the gas chamber and then install the ellip...

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Abstract

The present invention belongs to the field of on-line monitoring technology of the insulation state of a sulfur hexafluoride (SF6) gas insulation electrical device, and specifically relates to a partial discharge decomposition simulation experiment method of a direct current gas insulation electrical device. The method mainly comprises a SF6 direct current PD decomposition experiment method and methods of pulse current detection and collection and analysis testing of discharge decomposition gas, etc. The method provided by the invention is simple, easy to grasp and convenient for popularization, is widely applicable to the simulation and monitoring of a SF6 gas insulation electrical device direct current PD, and provides a scientific and effective method for insulation state monitoring of a direct current gas insulation electrical device and the SP6 PD decomposition test and decomposition mechanism research.

Description

technical field [0001] The present invention belongs to sulfur hexafluoride (SF 6 ) The technical field of on-line monitoring of the insulation state of gas-insulated electrical equipment, specifically relates to a partial discharge decomposition simulation experiment method for DC gas-insulated electrical equipment. Background technique [0002] Due to sulfur hexafluoride (SF 6 ) has excellent insulation and arc extinguishing properties, making SF 6 SF as insulating medium 6 Gas-insulated electrical equipment has the advantages of high dielectric strength, high reliability, small footprint and low maintenance workload, so it is more and more widely used in the field of high voltage and ultra / ultra high voltage power transmission and transformation. But SF 6 Gas-insulated electrical equipment will inevitably have some insulation defects in the process of manufacturing, assembly and operation. These insulation defects will gradually deteriorate during long-term operation....

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
CPCG01R31/12
Inventor 唐炬曾福平张晓星佘新蔡炜姚强陶加贵杨祎张潮海苗玉龙郑建杨景刚
Owner WUHAN UNIV
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