On-line remote monitoring method and device for pollution state of disk insulator

Abstract

The invention discloses an on-line remote monitoring method and an on-line remote monitoring device for the pollution state of a disk insulator. Pollution degree is quantitatively, conveniently and clearly displayed on line by a relative conductance method for the pollution state, so the mid-range forecast of the insulator pollution is realized, and the method and the method can also be applied to monitoring of pollution states of all external insulation of electric transmission and transformation equipment; the defect that solar energy is used as energy is avoided by taking distributed capacitance current and polluted leakage current of a transmission line as energy; the capacitance current and the polluted leakage current or the sum of the capacitance current and the polluted leakage current of a low potential end can be measured respectively; and whether the insulator is connected in series with a zero-resistance insulator or a line is electrified or grounded is judged according to the change of the capacitance current. An outdoor monitoring device is connected in series with the low potential end of the insulator by using a hanger, so measurement points of temperature and relative humidity are arranged in air current which is connected in series with the insulator, and the measurement points of temperature and relative humidity are protected by a sun shade, so the good correlation of the polluted leakage current with measure data of the temperature and relative humidity can be kept, and the implementation of the relative conductance method for the pollution state can be guaranteed on hardware.

Description

technical field [0001] The invention relates to the technical field of remote monitoring, in particular to an on-line remote monitoring method and device for the pollution state and operating state of disc insulators of transmission lines. Background technique [0002] High-voltage power transmission systems often pass through mountains or fields. It is often difficult to obtain power for online monitoring devices or communication devices. Generally, solar cells and energy storage batteries are used as energy sources. Its disadvantages are: the use of solar power should consider that solar energy cannot be provided at night; the solar energy provided by continuous cloudy days is greatly reduced; the efficiency of solar cells is gradually reduced by environmental pollution. Therefore, the installed area of ​​the solar panel and the installed capacity of the storage battery are much larger than the capacity required by the average power of the measurement circuit and informati...

AI Technical Summary

Problems solved by technology

The disadvantages are: the use of solar power should take into account that solar energy cannot be provided at night; the solar energy provided by continuous cloudy days is greatly reduced; the efficiency of solar cells is gradually reduced by environmental pollution, etc.

Therefore, the change of leakage current cannot be directly used to judge the zero-value insulator

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