Blind signal separation-based electric vehicle load identification method in power distribution area

Abstract

The invention provides a power distribution area electric vehicle load identification method based on blind signal separation, and belongs to the technical field of power distribution network management and control. The problem that the access of the charging equipment cannot be identified due to unknown topology and information loss in the power distribution area is solved. According to the technical scheme, the method comprises the following steps: 1) establishing an electric vehicle load model; 2) a blind signal separation model; and 3) constructing a membership distance and membership degree function. The method has the beneficial effects that the electric vehicle load model and the blind signal separation model are established, the non-linear load of the electric vehicle is processed in a separation and non-linear mapping mode, a non-linear signal is converted into a linear signal, the separated result is more accurate, the speed is higher, and the blind signal is more accurate. And the precision of the separation result of blind signal separation is high.

Description

technical field [0001] The invention relates to the technical field of distribution network management and control, in particular to a load identification method for electric vehicles in a distribution station area based on blind signal separation. Background technique [0002] In recent years, energy consumption and environmental problems have become increasingly serious. Compared with traditional fuel vehicles, electric vehicles have developed rapidly due to their clean, environmentally friendly and environmentally friendly features. However, at the same time, the installation of a large number of vehicle charging piles, the disorderly access of electric vehicle charging loads, and the characteristics of large charging power of electric vehicles also pose certain threats to the safe and stable operation of the power grid. In order to ensure the safe and stable operation of the power grid and the flexible and intelligent power consumption of users, load sensing technology h...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for identifying electric vehicle loads in a distribution station area based on blind signal separation, which solves the problem that the charging equipment cannot be identified due to the unknown topology and lack of information in the distribution station area. The separation technology is used in the power system load identification technology, and the electric vehicle load is identified through the construction of the membership distance and membership function, and finally the feasibility of the method is verified by simulation

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