Acquisition method for inter-phase operation shock-insulation level altitude modified value of 2-4km-altitude 500kV-substation electrical equipment

A technology of interphase operation and insulation level, applied in electrical digital data processing, special data processing applications, instruments, etc., can solve problems such as unclearness, and achieve the effect of accurate experimental data

Inactive Publication Date: 2014-07-09
SOUTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP CORP
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Problems solved by technology

[0003] At present, at an altitude below 2000m, a large number of experiments and researches have been done at home and abroad on the air gap discharge characteristics and equipment pollution external insulation, and a relatively mature high-altitude equipment external insulation correction method has been obtained, and correction standards and specifications ha

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  • Acquisition method for inter-phase operation shock-insulation level altitude modified value of 2-4km-altitude 500kV-substation electrical equipment
  • Acquisition method for inter-phase operation shock-insulation level altitude modified value of 2-4km-altitude 500kV-substation electrical equipment
  • Acquisition method for inter-phase operation shock-insulation level altitude modified value of 2-4km-altitude 500kV-substation electrical equipment

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[0035] All the features disclosed in this specification, or all disclosed methods or steps in the process, except for mutually exclusive features and / or steps, can be combined in any manner.

[0036] Any feature disclosed in this specification, unless specifically stated, can be replaced by other equivalent or equivalent alternative features. That is, unless otherwise stated, each feature is just one example of a series of equivalent or similar features.

[0037] In order to obtain real data, we conducted field experiments in 500kV substations at an altitude of 2000-4000m, and obtained the operating impulse discharge characteristic curves of two split soft busbars in different altitude areas, such as Figure 1~3 , That is, the relationship between the distance between two two split soft busbars and the minimum operating impulse voltage that can cause discharge between the soft busbars.

[0038] Among them, at an altitude of 2245 meters: when the soft bus phase spacing d is 5 meters, ...

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Abstract

The invention discloses an acquisition method for inter-phase operation shock-insulation level altitude modified value of 2-4km-elevation 500kV-substation electrical equipment, and relates to the field of high-altitude ultrahigh-pressure transmission and transformation projects. The technical scheme includes the steps of 1), calculating the inter-phase operation shock-insulation level altitude modified value of flexible busbars at optional areas located at the altitude ranging from 2000m to 4000m or a grading ring; 2), inquiring the inter-phase operation shock-insulation level altitude modified value of the flexible busbars and the grading ring corresponding to the altitude of 0; 3), multiplying the inter-phase operation shock-insulation level altitude modified value of the flexible busbars and the grading ring corresponding to the altitude of 0 by the correction factor Ka to acquire the inter-phase operation shock-insulation level altitude modified value of the flexible busbars when the altitude is H.

Description

technical field [0001] The invention relates to the field of high-altitude ultra-high voltage power transmission and transformation engineering. Background technique [0002] The area with an altitude above 1,000 meters in China accounts for about two-thirds of the country's land area. The average elevation of the four major plateaus is above 1,000 meters. The West-to-East power transmission substation inevitably passes through high-altitude areas. In high-altitude areas, the air is thin, the air pressure is low, and the air insulation performance is reduced. It is necessary to correct the external insulation of the equipment. [0003] At present, at an altitude below 2000m, a large number of experiments and researches have been done at home and abroad on the air gap discharge characteristics and equipment pollution external insulation, and a relatively mature high-altitude equipment external insulation correction method has been obtained, and correction standards and specif...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 吴怡敏余波邹家勇李龙才严可为伍晓伦蔡德江冯小明张映桢周德才朱大鹏尹大千邢毅刘正道丁晓飞樊艳曾捷李珊珊骆玲龚琳珺
Owner SOUTHWEST ELECTRIC POWER DESIGN INST OF CHINA POWER ENG CONSULTING GROUP CORP
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