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

Abstract

The invention discloses an on-line remote monitoring method and device for the pollution status of disc insulators. The relative conductance method of the pollution status is used to display the pollution degree online, quantitatively, conveniently and clearly, to realize the mid-term forecast of the pollution of the insulator, and it can also be applied to power transmission and transformation equipment. Pollution status monitoring of all external insulation; use the distributed capacitance current and pollution leakage current of the transmission line as the energy source, avoiding the shortcomings of solar energy as the energy source; and can separately measure the capacitance current, pollution leakage current or the sum of the insulators at the low potential end, according to The change of the capacitive current determines whether the insulator string has a zero-value insulator or whether the line is charged or grounded; the present invention uses a hanger to connect the outdoor monitoring device in series at the low potential end of the insulator string, and places the temperature and relative humidity measurement points at the end of the insulator string In the air flow, it is protected by a sunshade, so that the pollution leakage current is well correlated with the temperature and relative humidity measurement data, and the implementation of the relative conductance method in the pollution state is guaranteed on the 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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