Method for detecting metering performance abnormity of intelligent electric energy meter

Abstract

The invention belongs to the field of electric energy metering device detection, and provides a method for detecting the metering performance abnormity of an intelligent electric energy meter. The method specifically comprises the steps: historical electric energy data of a total meter and n sub-meters in a transformer area in m past metering time periods are called, and the electric energy circulation amount and electric energy metering of the total meter and each sub-meter in each metering time period are determined, so that loss energy in each metering time period is calculated; a meteringreading model is established based on the electric energy circulation amount, the loss energy and the electric energy metering, and an optimal solution of the metering reading model is calculated through a least square method to obtain a relative metering error value of each sub-meter; and the metering performance state of each sub-meter is determined according to the corresponding relative metering error value, and large-scale online detection is conducted on the metering performance of all intelligent electric energy meters in the power system in a transformer area. The method has the advantages of being large in detection volume, short in period, low in cost, high in real-time performance and wide in coverage.

Description

technical field [0001] The invention relates to the detection field of electric energy metering devices, in particular to a detection method for abnormal measurement performance of an intelligent electric energy meter. Background technique [0002] With the rapid development of my country's smart grid construction under the background of "Internet +", the total number of smart energy meters in use in China has exceeded 460 million. The current smart energy meter verification regulations require mandatory rotation of grid-connected energy meters on an 8-year cycle, and sampling inspections during use, but this method has the disadvantages of small detection volume and long detection cycle, and the existing smart electric energy The measurement method of the meter has problems such as high cost and low effectiveness. [0003] With the rise of big data and artificial intelligence, online and remote measurement has become a new direction of measurement technology, which has the...

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Problems solved by technology

[0004] In order to solve the technical problems of small volume and long period of measurement performance detection of existing smart electric energy meters, the present invention provides a detection method for abnormal measurement performance of intelligent electric energy meters, which performs large-scale online detection of the measurement performance of intelligent electric energy meters in power systems

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