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A gis insulation reliability evaluation method and system

A reliability and insulation fault technology, applied in fuzzy logic-based systems, instruments, testing dielectric strength, etc., can solve problems such as contact point deterioration, mechanical vibration, electrode potential floating, etc., to reduce redundancy problems, analyze Systematic, clearly structured effects

Active Publication Date: 2019-12-06
CHINA ELECTRIC POWER RES INST +3
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Problems solved by technology

However, under fast transient phenomena, especially fast transient overvoltage, these defects will discharge and breakdown the insulation
At home and abroad, a lot of research has been carried out on GIS partial discharge online monitoring, and it has become a hot spot in the field of insulation monitoring in various countries. However, there is no systematic theoretical method for GIS insulation state assessment at present.
[0007] 3. Floating electrode: Poor contact of the conductive part on the mechanical equipment will cause mechanical vibration caused by electrostatic attraction, which will lead to further deterioration of the contact point, and eventually the electrode potential will float
At present, most of the analysis of GIS insulation faults only analyzes the fault type and cause, and has not formed an effective evaluation system

Method used

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  • A gis insulation reliability evaluation method and system
  • A gis insulation reliability evaluation method and system
  • A gis insulation reliability evaluation method and system

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Embodiment Construction

[0038] Exemplary embodiments of the present invention will now be described with reference to the drawings; however, the present invention may be embodied in many different forms and are not limited to the embodiments described herein, which are provided for the purpose of exhaustively and completely disclosing the present invention. invention and fully convey the scope of the invention to those skilled in the art. The terms used in the exemplary embodiments shown in the drawings do not limit the present invention. In the figures, the same units / elements are given the same reference numerals.

[0039] Unless otherwise specified, the terms (including scientific and technical terms) used herein have the commonly understood meanings to those skilled in the art. In addition, it can be understood that terms defined by commonly used dictionaries should be understood to have consistent meanings in the context of their related fields, and should not be understood as idealized or over...

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Abstract

The present invention relates to a method used for determining the insulation reliability of a GIS. The method is characterized by comprising selecting at least two GIS insulation faults; establishing a GIS insulation fault tree according to the selected GIS insulation fault, the actual operation state of the GIS and the fault situation; analyzing the GIS insulation fault tree to obtain the weight of each fault factor in a plurality of fault factors; and establishing a GIS insulation reliability evaluation model according to the weight of each above fault factor and the generation probability of each fault factor, and determining the GIS insulation reliability according to the GIS insulation reliability evaluation model. The present invention also relates to a GIS insulation reliability evaluation system which is characterized by comprising an insulation fault selection unit, a GIS insulation fault tree establishment unit, a fault factor weight determination unit and a GIS insulation reliability determination unit.

Description

technical field [0001] The invention relates to the technical field of power fault diagnosis, and more specifically, to a GIS insulation reliability evaluation method and system. Background technique [0002] At present, most of the fault research on GIS (Gas Insulated Switchgear, gas-insulated metal-enclosed switchgear) at home and abroad stays at the level of fault phenomena, and there is no comprehensive and detailed analysis and research on GIS faults, and there is a lack of understanding of GIS fault systems. [0003] Since the various devices inside the GIS are closely connected, compact and interrelated, its insulation system is particularly important. Once the insulation is damaged, it will cause damage to other non-faulty devices, and then affect the normal operation of the entire GIS. Because GIS will leave some latent defects in the process of manufacturing and assembling, these defects may generate discharge during the operation of GIS, cause insulation breakdown...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/12
CPCG01R31/1254G06N7/023
Inventor 王永强律方成崔博源胡芳芳陈允
Owner CHINA ELECTRIC POWER RES INST
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