Gateway meter accuracy online monitoring and analyzing method and system

Abstract

The invention is applicable to the field of gateway power metering management, and provides a method for conducting online monitoring and analyzing on the gateway meter accuracy. The method comprisesthe following steps that pulse sampling is conducted on a gateway meter; power waveform sampling is conducted on an electric circuit; power parameters are calculated by means of a nuttall second-ordercomplexification algorithm; the load condition is identified automatically, and light load detection is avoided; the detection process is started automatically according to the setting condition; theaccuracy is corrected according to load types, the changing relationship of the gateway meter accuracy along with time is analyzed; the influence of a harmonic wave on the accuracy is analyzed; the seasonal rule of the accuracy is analyzed. Accordingly, online detection and multi-dimension analysis are conducted on the accuracy of the gateway meter by means of the nuttall second-order complexification algorithm and massive data analysis, management of an electric power company on the gateway meter can be optimized, the accuracy of the gateway meter is mastered in real time, various factors affecting the accuracy is found, and the electric charge loss is reduced.

Description

technical field [0001] The invention is applicable to the field of gate electric energy metering management, and provides an online monitoring and analysis method and system for the accuracy of gate meters. Background technique [0002] In the power system, the gateway meter is the basis for settlement of electricity transactions by various market entities (power companies, power plants, electricity sales companies, large users, etc.), and its accuracy is directly related to electricity billing and the equality of each market entity Transactions and Financial Interests. Therefore, the power company has always been very concerned about the accuracy of the gate meter, and is committed to improving the accuracy and stability of the gate meter, discovering the factors that affect the accuracy of the gate meter, and mastering the law of the accuracy of the gate meter. [0003] Gateway meter measurement management is one of the most important daily management tasks in power appli...

AI Technical Summary

Problems solved by technology

[0004] For the detection of the accuracy of the gate meter, the manual on-site calibration method has been traditionally used, which has problems such as heavy workload, long calibration time, and corresponding requirements for the secondary circuit load.

The remote calibration technology currently implemented is mainly to install multiple sets of centralized electric energy measurement standard devices and communication modules in each gateway substation, and only send the on-site calibration results directly to the main station through the network. The essence is to use standard devices for on-site calibration To check the electric energy meter to be tested, the utilization rate of resources such as standard devices and transmission network is very low, and the performance is restricted by the sampling accuracy and algorithm performance of existing standard devices, and it is also necessary to regularly calibrate the standard devices used

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