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

A technology of blind signal separation and electric vehicles, which is applied in pattern recognition in signals, electric vehicle charging technology, character and pattern recognition, etc., and can solve problems such as unknown topology, missing information, and unrecognizable charging equipment access in distribution stations. problem, to achieve the effect of clear and intuitive results, high precision of separation results, and fast speed

Pending Publication Date: 2022-05-27
STATE GRID JIANGSU ELECTRIC POWER CO LTD NANTONG POWER SUPPLY BRANCH +1
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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

Method used

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

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Embodiment

[0059] see Figure 1 to Figure 8 , in the embodiment of the present invention, with Figure 5 The topology shown is an example. Multiple LTUs are connected to the TTU. Each LTU is connected to various loads. The LTU will obtain the electrical value of the branch node. After the electric vehicle is connected to the grid, the charging start time, charging power and other information will be uploaded to the LTU in time. , LTU will package the information of each load and upload it to TTU, based on these big data, develop edge computing APP in TTU and realize corresponding functions.

[0060] The present embodiment is a method for identifying electric vehicle loads in the distribution station area based on blind signal separation, using MATLAB as the simulation platform to conduct simulation experiments, and the specific steps are:

[0061] Step 1. Considering the different characteristics of power and waveform of different power equipment, the sine wave, square wave and triangul...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00H02J3/00
CPCH02J3/00H02J2310/70H02J2203/20H02J2203/10G06F2218/22G06F2218/08Y02T90/167
Inventor 欧朱建袁健华缪晓卫王卓李勇生肖小龙苏伟孙天奎郭佳豪史明明
Owner STATE GRID JIANGSU ELECTRIC POWER CO LTD NANTONG POWER SUPPLY BRANCH
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