Electric quantity metering error monitoring method of alternating current charging station and charging station

Abstract

The invention discloses an electric quantity metering error monitoring method of an alternating current charging station and the charging station, and belongs to the technical field of alternating current charging stations. According to the method for monitoring the electric quantity metering error of the alternating current charging station, a charging pile energy conservation equation set model including charging pile metering error parameters is constructed, an energy conservation equation set and a corresponding solving method are constructed by utilizing charging guns and total meter electric quantity metering data in the station, and the electric quantity metering error of the charging guns is obtained through calculation. Because the electric quantity metering error of the charging pile is obtained through metering data analysis, the charging pile with the out-of-tolerance electric quantity metering error can be effectively screened out as a pre-screening step of charging pile field verification, the workload of the charging pile field verification is greatly reduced, the timeliness is high, online real-time analysis can be realized, the comprehensive cost is lower than that of field full verification, compared with the prior art, the accuracy is high and the error is small.

Description

technical field [0001] The invention relates to a power measurement error monitoring method of an AC charging station and the charging station, belonging to the technical field of AC charging stations. Background technique [0002] In the actual on-site operation of the on-site verification method for the electric quantity measurement error of the charging pile metering point, the monitoring of the charging pile needs to use special equipment based on real load detection, and most of them are integrated on-site monitoring vehicles, which are costly. The detection of a single metering point It is also time-consuming. Generally speaking, with the increasing number of charging piles, the scheme of monitoring charging pile metering points through on-site verification will inevitably bring about a geometric multiple increase in workload. Research on new, online, and cost-effective charging pile metering Point condition monitoring technology and management mode is imperative. ...

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Problems solved by technology

[0005] However, the above scheme predicts the metering value of the charging pile based on the error of the first inspection and the state of the same type of charging pile, and there is a measurement deviation; at the same time, it also needs to go to the site for verification, which belongs to the category of traditional verification methods, and the verification cost is high; The power consumption prediction of similar algorithms has large uncertainty and large errors.

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