Title: Load coordination control method of new energy vehicle charging pile based on Markov chain

Authors: Shun Liu; Yajuan Zhou; Yue Lu; Yang Liu; Qingtao Li

Addresses: State Grid Beijing Haidian Electric Power Supply Company, Beijing, 100031, China ' Energy Internet Research Institute, Tsinghua University, Beijing, 100084, China ' State Grid Beijing Haidian Electric Power Supply Company, Beijing, 100031, China ' State Grid Beijing Haidian Electric Power Supply Company, Beijing, 100031, China ' State Grid Beijing Haidian Electric Power Supply Company, Beijing, 100031, China

Abstract: In order to reduce the load peak valley difference of a charging station and improve the stability of load operation, a load coordination control method of new energy vehicle charging station based on Markov chain was proposed. The Markov chain theory is applied to determine the state transition form of the new energy vehicle charging load, and the required charging time is calculated. The least square method and inverse linear regression equation are used to predict the output load of new energy vehicle charging station. The load objective function and constraint conditions of the charging station are constructed, and the load coordination control objective is determined to achieve accurate control of the charging load. The experimental results show that after using this method, while meeting the charging demand, the peak to valley load difference can only reach 1.70 kW. This shows that the method can ensure the operation stability of a charging station.

Keywords: Markov chain; new energy vehicles; energy crisis; load control; power grid operation; least square method.

DOI: 10.1504/IJETP.2024.138540

International Journal of Energy Technology and Policy, 2024 Vol.19 No.1/2, pp.105 - 119

Received: 07 Jul 2023
Accepted: 24 Oct 2023
Published online: 10 May 2024 *

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