Research On Anti Current Shunt Electric Larceny Technology For The Power Metering System

According to statistics of the power sector,current shunt electric larceny by short-circuit of electric energy meter current coil is a frequently used way of the high-voltage power metering system electric larceny.In recent years,many scholars and technical staff have put forward a number of different solutions,but none of them can solve the problem completely.Furthermore,many products in the market that claim to have anti-current shunt electric larceny function still have some shortcomings:hard to make accurate judgments;unable to accurately calculate to electricity loss;poor of real-time monitoring capabilities.Based on this,anti-current shunt electric larceny technology for the power metering system was studied in this article.The main contents of this paper are as follows:1.This paper makes a research on the anti current shunt electric larceny technology for electronic electric energy meter of high-voltage power metering system.Through analysis,this paper finds that the ratio of the terminal voltage of current transformer secondary winding and the electric current that passes electric energy meter current coil has intimate relationship with current shunt electric larceny malfunction of the electric energy meter current coil.This paper also discusses its relationship with the electric quantity loss.What's more,a detection model of malfunction is established and its efficiency is proved.2.Targeted at mechanical electric energy meter current coil,A new kind of detect method is proposed for current shunt electric larceny by short-circuit of the high-voltage power metering system.Firstly,the analysis shows intimate relation between the ratio of the terminal voltage of current transformer secondary winding and the electric current of current transformer secondary circuit and short-circuit malfunction of the electric energy meter' current coil.Next,fault detection model for current shunt electric larceny is designed.Finally,through the experiment,it is confirmed that the current shunt electric larceny detection means is feasible.3.Through analyzing defects of anti current shunt electric larceny product on the market,and combining with fault detection model of current shunt electric larceny for mechanical electric energy meter' the high-voltage power metering system,and integrating with GSM(Global System for Mobile Communications) technology features, a system based on GSM technology is designed;the system can accurately identify current shunt electric larceny act,at the same time also has a strong ability of real-time monitoring.