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Journal of Applied MathematicsVolume 2014 2014, Article ID 167565, 11 pages

Research Article

Department of Electrical Engineering, Xi’an Jiaotong University, Xi’an, Shaanxi 710049, China

Power Dispatch and Control Center of Guangdong Power Grid Corporation, Guangzhou, Guangdong 510080, China

Received 25 April 2014; Accepted 28 July 2014; Published 14 August 2014

Academic Editor: Weichao Sun

Copyright © 2014 Jianxue Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Integrating EV charging station into power grid will bring impacts on power system, among which the most significant one is the harmonic pollution on distribution networks. Due to the uncertainty of the EV charging process, the harmonic currents brought by EV charging stations have a random nature. This paper proposed a mathematical simulation method for studying the working status of charging stations, which considers influencing factors including random leaving factor, electricity price, and waiting time. Based on the proposed simulation method, the probability distribution of the harmonic currents of EV charging stations is obtained and used in the calculation of the probability harmonic power flow. Then the impacts of EVs and EV charging stations on distribution networks can be analyzed. In the case study, the proposed simulation and analysis method is implemented on the IEEE-34 distribution network. The influences of EV arrival rates, the penetration rate, and the accessing location of EV charging station are also investigated. Results show that this research has good potential in guiding the planning and construction of charging station.





Autor: Jianxue Wang, Yanlin Cui, and Minghui Zhu

Fuente: https://www.hindawi.com/



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