The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
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Impact Analysis of Wind Power on Power System Reliability with Electric Vehicles

풍력발전과 전기자동차가 전력계통의 신뢰도에 미치는 영향 평가

  • Kim, Dam (Dept. of Electrical and Computer Engineering, Seoul National University) ;
  • Park, Hyeongon (Dept. of Electrical and Computer Engineering, Seoul National University) ;
  • Kwon, Hungyu (Dept. of Electrical and Computer Engineering, Seoul National University) ;
  • Park, Jong-Keun (Dept. of Electrical and Computer Engineering, Seoul National University)
  • Received : 2015.05.03
  • Accepted : 2015.10.07
  • Published : 2015.11.01
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Abstract

An increasing number of electric vehicles (EVs) in power system affects its reliability in various aspects. Especially under high EV penetration level, new generating units are required to satisfy system's adequacy criterion. Wind power generation is expected to take the major portion of the new units due to environmental and economic issues. In this paper, the system reliability is analyzed using Loss of Load Expectation (LOLE) and Expected Energy Not Served (EENS) under each and both cases of increasing wind power generation and EVs. A probabilistic multi-state modeling method of wind turbine generator under various power output for adequate reliability evaluation is presented as well. EVs are modeled as loads under charging algorithm with Time-Of-Use (TOU) rates in order to incorporate EVs into hour-to-hour yearly load curve. With the expected load curve, the impact of EVs on the system adequacy is analyzed. Simulations show the reliability evaluation of increasing wind power capacity and number of EVs. With this method, system operator becomes capable of measuring appropriate wind power capacity to meet system reliability standard.

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