Judgment method for faults of current detection circuits of electric energy meters of residents

Abstract

The invention discloses a judgment method for faults of current detection circuits of electric energy meters of residents. The judgment method comprises the following steps: acquiring current of the electric energy meters of the residents; judging the types of the electric energy meters; judging whether the electric energy meters have potential overload faults or not; judging whether the single-phase electric energy meters have faults of the current detection circuits or not. According to the judgment method disclosed by the invention, current information of the electric energy meters of the residents is acquired by a concentrator; under the conditions of not changing data acquisition procedures and flow of existing electric energy meters, prejudgment of potential overload faults of the electric energy meters is realized, and automatic acquisition and analysis and fault judgment of live fire current and zero line current of single-phase meters of the residents at four time points are also realized. According to the judgment method disclosed by the invention, the faults of the current detection circuits of the electric energy meters of the residents can be quickly judged; in addition, the judgment method is simple and reliable in implementation and is accurate in judgment.

Description

technical field [0001] The invention specifically relates to a method for judging a fault in a current detection circuit of a resident electric energy meter. Background technique [0002] With the development of economy and technology, electric energy has become the most important secondary energy in people's production and life. As the terminal meter of electric energy measurement, the importance of electric energy meter is self-evident. [0003] At present, the metering faults of residential electric energy meters are various, including human factors such as electricity theft, and environmental factors such as damage to the components of the meter itself. In electricity theft, there are those who short-circuit the live wire outside the meter, and some who open the meter cover and short-circuit the current sampling circuit. The above-mentioned situations, for the power system, only show the appearance of the meter stopping, which is consistent with the situation that the ...

AI Technical Summary

Problems solved by technology

The above-mentioned situations, for the power system, only show the appearance of the meter stopping, which is consistent with the situation that the user does not use electricity, and it is difficult to distinguish, so it is difficult for the electricity consumption information collection system to find out.

According to statistics, among the 12 million electric energy meters connected to Hunan's power consumption information collection system, more than 800,000 of them stop running every month. These faulty meters are hidden in these more than 800,000 meters, and it is difficult to distinguish them

[0004] At present, although the electricity consumption information collection system has achieved full coverage and full collection, due to the limitation of carrier communication, the collection of residential energy meter information is limited to daily frozen meter codes and typical time point voltages. Acquisition and analysis of current, and there is no judgment method to judge the fault of the current detection circuit of the residential electric energy meter

Images