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GIS (Gas Insulated Switchgear) solid insulation life prediction method and device

A technology for solid insulation and life prediction. It is used in measuring devices, measuring electricity, and measuring electrical variables. It can solve the problems of GIS solid insulation aging loss, unrecoverable solid insulation, and deterioration of insulation health status.

Active Publication Date: 2018-12-18
GUANGDONG POWER GRID CO LTD +1
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, solid insulation is not recoverable
Under the action of long-term electrical stress, thermal stress and mechanical stress, GIS solid insulation will continue to suffer from aging loss, and the health of the insulation will deteriorate.

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  • GIS (Gas Insulated Switchgear) solid insulation life prediction method and device
  • GIS (Gas Insulated Switchgear) solid insulation life prediction method and device
  • GIS (Gas Insulated Switchgear) solid insulation life prediction method and device

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Embodiment Construction

[0045] The embodiment of the present invention provides a method and device for predicting the life of GIS solid insulation, which realizes the prediction of the remaining life of on-site GIS solid insulation, ensures the reliability of power system operation and avoids unnecessary waste of resources.

[0046] 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 scope of the present invention.

[0047] see figure 1 , the present ...

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Abstract

The invention discloses a GIS (Gas Insulated Switchgear) solid insulation life prediction method and device. Field GIS historical operating data and partial discharge data are obtained, so that extraction of the key aging state parameter of field GIS solid insulation is realized; therefore, a GIS solid insulation electric-field intensity simulation calculation model, a GIS solid insulation temperature-field simulation calculation model and a GIS solid mechanical stress simulation calculation model are pre-set; in combination with the defect damage value of the field GIS solid insulation obtained by the partial discharge data, calculation of the cumulative aging damage value of the field GIS in a service period is realized; finally, the life of the field GIS solid insulation is obtained bycalculation according to the pre-set relational expression of the aging degree of the GIS solid insulation and the device life probability density; therefore, the remaining life of the field GIS solidinsulation is predicated; the operating reliability of a power system is ensured; and unnecessary waste of resources is avoided.

Description

technical field [0001] The invention relates to the technical field of material performance evaluation, in particular to a GIS solid insulation life prediction method and device. Background technique [0002] Gas Insulated Switchgear (GIS) has the characteristics of small footprint, convenient installation, reliable operation, stable insulation performance, and small maintenance workload. It is widely used in substations of various voltage levels. The equipment in operation huge amount of. my country has gradually adopted GIS equipment since the 1980s, and the application scale is getting larger and larger. At present, the operating life of a large number of GIS equipment in operation is close to or will soon be close to its 30-year nominal life. Whether the insulation state of these equipment is ideal, whether it can still operate safely, whether it needs to be returned in advance or extend the service life, these issues are the power grid operation and maintenance personn...

Claims

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Application Information

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IPC IPC(8): G01R31/12
CPCG01R31/1254
Inventor 王增彬吕鸿王流火陈义龙吴吉唐瑛庞小峰饶章权周宏扬刘姝嫔马国明李成榕
Owner GUANGDONG POWER GRID CO LTD
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