Rapid recovery method of composite outer insulation running performance of electric transmission and transformation equipment in hazy weather
A technology for power transmission and transformation equipment and operating performance, applied to electrical components, switchgear, etc., can solve problems such as difficult migration, reduced migration rate, and influence on the normal operation of the power system, and achieve rapid performance recovery, accurate judgment, and simple operation Effect
Active Publication Date: 2014-12-10
STATE GRID CORP OF CHINA +2
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Problems solved by technology
In some environments (such as smog), such as low temperature, high humidity and other atmospheric environments, as well as serious pollution deposition conditions, the hydrophobic migration characteristics of silicone rubber materials will be affected to a certain extent, resulting in a decrease in the migration rate or even difficulty for a long time. Migration to the surface of the polluted layer, etc., which reduces the withstand voltage level of the composite insulator and affects the normal operation of the power system
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[0022] The method for quickly recovering the operation performance of the composite external insulation of power transmission and transformation equipment according to the present invention will be described in detail below with specific examples.
[0023] see figure 1 , the present invention is aimed at the method that is used for the rapid recovery of operation performance of composite external insulation of power transmission and transformation equipment under haze weather, comprising the following steps:
[0024] (1) Predict whether the haze weather lasts for more than 48 hours, if it exceeds, enter step (2), otherwise it will not be processed, that is, it is not applicable to the processing of step (3).
[0025] In this step, combined with the weather forecast of the meteorological department and the online meteorological monitoring system of the electric power company, the duration of the haze weather is comprehensively predicted. It is predicted that the duration of fo...
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The invention discloses a rapid recovery method of a composite outer insulation running performance of electric transmission and transformation equipment in a hazy weather. The method comprises the following steps of: (1) prejudging the time of duration of the hazy weather; (2) estimating hydrophobic nature and filthy degree of the composite outer insulation of the electric transmission and transformation equipment; (3) adopting low-temperature plasma discharge to deal with the composite outer insulation of the electric transmission and transformation equipment; (4) judging the improvement degree of the hydrophobic nature of the composite outer insulation of the electric transmission and transformation equipment. The rapid recovery method of the composite outer insulation running performance of the electric transmission and transformation equipment in the hazy weather can recover the running performance of the composite outer insulation of the electric transmission and transformation equipment rapidly, and is exact in judgment, simple to operate and suitable for large-range generalization and application.
Description
[0001] technical field [0002] The invention relates to the field of high-voltage external insulation, in particular to a method for quickly recovering the operating performance of composite external insulation of power transmission and transformation equipment in foggy weather. Background technique [0003] At present, the main methods used to slow down pollution flashover accidents of power transmission and transformation equipment are: coating RTV anti-pollution flashover paint on the surface of electric porcelain or glass insulators, supplemented by regular manual cleaning of pollution, and using silicone rubber composite insulators, etc. In particular, the use of silicone rubber composite insulators has become an important means of preventing and controlling insulation flashover, and is widely used in power systems. The main reason is that the high-temperature vulcanized silicone rubber used as the composite insulator umbrella group material has hydrophobic migration c...
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IPC IPC(8): H02B3/00
Inventor 陈杰刘洋周志成周立颜彪路永玲
Owner STATE GRID CORP OF CHINA