Automatic control system for preventing electric leakage, fire and harmonic pollution

Abstract

The invention relates to an automatic control system for preventing electric leakage, fire and harmonic pollution. The automatic control system is provided with a main station, a substation and a customer terminal, wherein the substation is provided with an equipment security monitor; and the customer terminal is provided with an equipment security monitor, an intelligent power monitoring instrument, a carrier electric meter and a multifunctional electric meter with harmonic monitoring function. Based on an integrated information platform created by a GIS, an equipment security tester detects the electric leakage and the multifunctional electric meter with the harmonic detection function monitors a harmonic component, so the automatic control system discovers the fault in time, is matched with the GIS system to accurately judge a fault point, solves the problem of large-area interruption maintenance when the conventional power grid accidents happen, and fulfills the purposes of secure, reliable, energy-saving and environment-friendly power supply and power utilization.

Description

Technical field: [0001] The invention relates to a safe and environment-friendly power utilization technology for electric power systems, in particular, an automatic control system for preventing electric leakage, fire prevention and harmonic pollution, and avoiding large-scale power outages in the power grid. technical background: [0002] According to the survey of electricity consumption in my country over the years. With the continuous increase of per capita electricity consumption, the fire accidents caused by electricity have also increased year by year, and it has become one of the main reasons for fires. It also ranks first among all fire causes. According to relevant statistics, the proportion of electrical fires to the total number of fires in the country has risen from 10% in the early 1980s to nearly 30% now. The number of personal casualties is also very alarming. In 2003, the direct economic losses caused by electrical fire accidents in the whole country were ...

AI Technical Summary

Problems solved by technology

Among them, the odd harmonics, especially the 3rd and 5th harmonics, have the greatest impact. The reason is that the 3rd harmonic components are added in phase in the N line and the PE line, which makes the general leakage circuit breaker due to the line The residual current is too large to be put into use, and it will trip immediately after closing, which cannot guarantee timely power off

[0005] When the main station 1 of the power supply bureau, the sub-station or the medium and low-voltage client end have harmonic pollution or electric leakage accidents, the traditional solution is: first, manually report to the power management department by other means of communication, and wait for the power supply bureau to find out the accident. After the line in the area, the whole area will be shut down and cut off, and then personnel will be dispatched to deal with the accident, and finally the power supply bureau will restore the area The disadvantages of this method of handling accidents are: low efficiency, long time, and large accident impact

Images