Contamination observation system of power equipment

Abstract

The invention provides a contamination observation system of power equipment. A front-end current sensor mounted on the surface of an insulator transmits the collected leakage current to a leakage current collection circuit through a double-screened cable after the collected leakage current passes through a signal conditioning and protection circuit; an industrial computer controls a leakage collection circuit to collect leakage current from different passages; signals of a meteorological sensor are collected by a meteorological data collector and then transmitted to the industrial computer through a communication interface; and the industrial computer transmits the leakage current data and the meteorological data to a remote server through a data communication module after coding the data in different coding manners. The contamination observation system can reflect the current contamination state and meteorological conditions in real time through high-time-resolution sampling so as to achieve the close connection between real-time insulator leakage current monitoring and meteorological factors. According to the two types of monitoring data, the contamination observation system can execute contamination analysis on the power equipment so as to reflect the leakage current condition and ambient meteorological environment of the power equipment in real time, thereby improving the power equipment real-time monitoring accuracy.

Description

technical field [0001] The invention relates to the technical field of on-line monitoring of electric power equipment, in particular to a pollution observation system of electric power equipment. Background technique [0002] General power equipment monitoring often uses the equivalent salt density and ash density measured once a year to reflect the pollution status of the insulator surface, and the salt density and ash density measurement is generally obtained by sampling the power outage, the real-time data is not strong, and it is impossible to know Variation law of insulator surface pollution. [0003] The real-time monitoring of the leakage current of power equipment can reflect the pollution status and accumulation process of the external insulation of the equipment during operation, and provide scientific guidance data for the anti-pollution monitoring work of the power system. [0004] At present, the power system has begun to use the insulator leakage current as th...

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Problems solved by technology

[0004] At present, the power system has begun to use the insulator leakage current as the monitoring quantity, but there is a strong dependence between the insulator leakage current and meteorological factors, the leakage current is greatly affected by the voltage level and climate conditions, and the current real-time monitoring of power equipment cannot Insulator leakage current combined with real-time status of meteorological elements

Therefore, there are certain limitations in the pollution monitoring of power equipment, and the accuracy is low.

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