A method and system for calculating operating errors of smart electric energy meters in low-voltage station areas
A technology of smart electric energy meter and low-voltage station area, applied in the direction of measuring electrical variables, instruments, measuring devices, etc., to achieve the effect of improving efficiency and reducing workload
Active Publication Date: 2021-03-19
ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO +2
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Problems solved by technology
At present, there is still a lack of an effective method to accurately analyze and calculate the operating error of the electric energy meter based on the electricity consumption data of the residential users in the low-voltage station area
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[0057] The present invention will be further described in detail below in conjunction with the accompanying drawings and through specific embodiments. The following embodiments are only descriptive, not restrictive, and cannot limit the protection scope of the present invention.
[0058] A calculation method for the operation error of smart electric energy meters in low-voltage station areas, aiming at the common phenomena of missing, abnormal, light load, etc. in the original electricity data collected by the mining system, and the model equations are seriously ill-conditioned and difficult to solve problem, and proposed solutions. See attached figure 1 As shown, it specifically includes the following steps:
[0059] (1) Data preprocessing: According to the characteristics of electricity consumption data and the needs of data analysis, sort out and classify the types of "dirty data", and propose targeted processing measures for each small type of dirty data, as follows;
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The invention relates to a running error calculation method of an intelligent ammeter at a low-voltage zone. The running error calculation method comprises the following steps of (1) pre-processing data, analyzing original power utilization data acquired by an acquisition system, combing and classifying dirty data, and pre-processing the data according to classification; (2) circularly selecting rebuilt data by a time window after data pre-processing is completed; (3) building a model equation set by the selected data, and solving the model equation set to obtain a calculation result; and (4)identifying an abnormal electric energy meter by an outlier detection algorithm according to a circulation calculation result. The dirty data is combed and classified, and the deficiency and abnormalpart in original data is processed; by a regularization method, the morbidity of the equation set is processor; and by the outlier detection algorithm, an abnormal object is marked, so that a new means is provided for calibration operation of the electric energy meter.
Description
technical field [0001] The invention belongs to the field of electric power metering, and relates to a technology for calculating the operating error of an intelligent electric energy meter in a low-voltage station area, in particular to a method and a system for calculating the operating error of an intelligent electric energy meter in a low-voltage station area. Background technique [0002] With the deepening application of smart energy meters, the complexity of the power grid structure, the diversification of the nature of electricity consumption by users, and the high standardization requirements of users for the quality of power supply services, the traditional on-site detection service method of electric energy meters has been unable to meet the current low-voltage station areas. The management requirements of operation have disadvantages such as heavy workload, long verification time, and low verification efficiency. At the same time, since 2009, the State Grid Corpo...
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IPC IPC(8): G01R35/04
CPCG01R35/04
Inventor 李野赵宝国乔亚男李刚吕伟嘉刘浩宇张兆杰翟术然卢静雅许迪杨光董得龙赵紫敬赵勇季浩何泽昊顾强马凤云
Owner ELECTRIC POWER SCI & RES INST OF STATE GRID TIANJIN ELECTRIC POWER CO