10kV line change relationship evaluation method based on grey correlation analysis method

Abstract

The invention provides a 10kV line change relationship evaluation method based on a grey correlation analysis method. The method comprises steps that S1, original data of same period line loss evaluation of the transmission line is collected; S2, the collected original data is pre-processed; S3, the correlation degree is acquired through a grey correlation analysis method; S4, transformers with low correlation degrees are selected after sorting according to the correlation degrees; and S5, a Granger causality test method is utilized to test whether the transformers with the low correlation degrees are causes for line loss power generation, and the transformers with the abnormal line change relationship are determined based on the test result. The method is advantaged in that the human andfinancial resource consumption is reduced, the line change relationship of a power system is effectively and quickly sorted, the number of lines with disqualified line loss is quickly reduced, the causes of abnormal line loss are ascertained, the effect of line loss treatment is effectively improved, and the improvement bottleneck of the same period line loss evaluation index in the prior art is broken through.

Description

technical field [0001] The present application relates to the field of electric power technology, and in particular to a method for evaluating the line-change relationship of a 10kV line based on a gray relational analysis method. Background technique [0002] In order to further improve the efficiency and benefits of power grid production and operation management, optimize the line loss management process, promote the integration of dispatching, operation and maintenance, and marketing business, and make full use of the system data resources of each department, to achieve the goal of "optimal technical line loss and minimum management line loss" Target. In the process of line loss management in the same period, due to the small number of lines with voltage levels of 35kV and above, simple topological structure, few changes, high-quality and timely update of historical ledger data, the level of line loss management is relatively high, and the corresponding line loss The ass...

AI Technical Summary

Problems solved by technology

Due to the large number of 10kV lines and the transformers connected to them, the traditional carpet-type on-site search requires a lot of manpower and material resources, and the timeliness is low. This is also the key reason for the slow increase in the line loss compliance rate of 10kV sub-lines during the same period.

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