Method for determining effective utilization coefficient of creep distance of composite insulator

A composite insulator and creepage distance technology, applied in electrical digital data processing, CAD circuit design, special data processing applications, etc., can solve problems such as large errors in calculation results and affecting the effective utilization coefficient of creepage distances.

Active Publication Date: 2017-07-21
ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY +1
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Problems solved by technology

The difference in pollution accumulation on the upper and lower surfaces of the two insulators will have a significant impact on the pollution flashover voltage, which in turn will affect the effective utilization coefficient of the creepage distance. Big

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  • Method for determining effective utilization coefficient of creep distance of composite insulator
  • Method for determining effective utilization coefficient of creep distance of composite insulator
  • Method for determining effective utilization coefficient of creep distance of composite insulator

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0044] Taking the composite insulator of model FXBW-110 / 100 as an example, using XP-160 as the reference insulator, the calculation method of the present invention is used to obtain the effective utilization coefficient of the creepage distance of this type of composite insulator, and the specific steps are as follows:

[0045] ① Obtain the creepage distance of the composite insulator, the upper surface area of ​​the shed, and the lower surface area of ​​the shed, which are 3200mm and 321.4cm respectively 2 、991.3cm 2 , get the creepage distance of XP-160 ceramic insulator, the upper surface area of ​​the shed, and the lower surface area of ​​the shed, which are 305mm and 681cm respectively 2 、891cm 2 .

[0046] ② A composite insulator and a string of XP-160 porcelain insulators were suspended on the same foundation tower for natural polluti...

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Abstract

The invention discloses a method for determining an effective utilization coefficient of a creep distance of a composite insulator. At present, the method for the effective utilization coefficient of the creep distance of the composite insulator does not consider a non-uniform characteristic of natural dirt retention of a control insulator and has a certain limitation. According to the method, by analyzing characteristics of equivalent salt deposit density and equivalent non-soluble deposit density of the upper and lower surfaces, subjected to the natural dirt retention, of the composite insulator and the control insulator, a dirt retention ratio of the composite insulator to the control insulator subjected to the natural dirt retention is obtained; according to a manual withstand pollution test result, flashover voltage characteristics of the composite insulator and the control insulator are obtained; and according to corresponding flashover voltages under different dirt retention conditions, the effective utilization coefficient of the creep distance of the composite insulator is obtained. According to the method, the influence of salt deposit density, non-soluble deposit density and dirt retention non-uniformity of the natural dirt retention of the insulator on the flashover voltage is considered, so that the effective utilization coefficient of the creep distance is ensured to be correctly calculated.

Description

technical field [0001] The invention relates to a method for determining the effective utilization coefficient of the creepage distance of a composite insulator, in particular to a method for determining the effective utilization coefficient of the creepage distance of a composite insulator considering the characteristics of natural pollution accumulation. Background technique [0002] The effective utilization factor of creepage distance is of great significance to the insulation configuration of composite insulators in transmission lines. Through the effective utilization coefficient of creepage distance of composite insulators under different pollution levels, the effective creepage distance of composite insulators can be determined, which helps the power operation department to judge whether the composite insulator meets the safety requirements under the specific pollution degree, and helps the power design department Select the appropriate creepage distance and string l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/39G06F2113/16G06F2119/18
Inventor 李特王少华刘浩军梅冰笑胡文堂曹俊平董雪松周象贤蒋愉宽蒋鹏
Owner ELECTRIC POWER RES INST OF STATE GRID ZHEJIANG ELECTRIC POWER COMAPNY
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