Partial discharge diagnosis method and system of GIS device

A technology of partial discharge and diagnosis method, applied in the direction of measuring electricity, measuring electrical variables, testing dielectric strength, etc., can solve the problems of incomplete reference factors, inability to effectively diagnose partial discharge faults of GIS equipment and timely early warning, etc., to avoid errors. The effect of alarming and analyzing the results is accurate

Active Publication Date: 2018-03-23
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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AI Technical Summary

Problems solved by technology

[0005] The invention provides a method and system for diagnosing partial discharge of GIS equipment, which solves the technical problem that the reference factors of the traditional partial discharge monitoring system are not comprehensive, and cannot effectively diagnose partial discharge faults of GIS equipment and timely early warning

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  • Partial discharge diagnosis method and system of GIS device
  • Partial discharge diagnosis method and system of GIS device
  • Partial discharge diagnosis method and system of GIS device

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Embodiment Construction

[0044] The embodiment of the present invention provides a method and system for diagnosing partial discharge of GIS equipment, which solves the technical problem that the reference factors of the traditional partial discharge monitoring system are not comprehensive, and cannot effectively diagnose the partial discharge failure of GIS equipment and timely early warning.

[0045] In order to make the purpose, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the following The described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection s...

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Abstract

The embodiment of the invention discloses a partial discharge diagnosis method and system of a GIS device. The method and system perform similarity analysis on the monitoring data of UHF sensors at equal intervals to determine whether the monitoring data originate from the same signal source, avoids misjudging the partial discharge severity and a fault type of respective UHF sensors due to the interference from multiple signal sources, determine whether a fault is the internal fault of the GIS device, avoids false alarms due to external faults; accurately determine a partial discharge positionaccording to UHF signal amplitudes in the monitoring data, equipment structure information, and operating data at the same detection intervals, analyze the discharge severity in combination with thedischarge amplitude change trend, positioning information, operating data and discharge types so as to make the analysis result more accurate, timely and effectively give early warning, provide important reference for workers, and solve a technical problem that a traditional partial discharge monitoring system cannot diagnose the partial discharge faults of the GIS device or timely give warning because of incomprehensive reference factors.

Description

technical field [0001] The invention relates to the field of electric equipment detection, in particular to a GIS equipment partial discharge diagnosis method and system. Background technique [0002] GIS equipment has high safety and reliability and is maintenance-free equipment. However, some insulation defects may occur during the manufacture, installation, operation and maintenance of GIS equipment, resulting in insulation failure. The on-line detection of GIS partial discharge can help the staff to discover the insulation defects of GIS equipment in time, avoid accidents, and ensure the safe operation of GIS equipment. [0003] Based on partial discharge on-line monitoring, it is possible to formulate more reasonable operation plans and maintenance strategies on the basis of fully grasping the actual conditions of the equipment, while fully tapping the potential of the equipment under the condition of optimal system security to extend its service period and service lif...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/12
CPCG01R31/1254
Inventor 罗颖婷吴昊杜双育叶海峰易潇然鄂盛龙周恩泽
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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