Reactive Power Compensation of Power Grid Based on V2G Reactive Power Dispatching

doi:10.3969/j.issn.1000－7229.2018.01.005

Abstract

Abstract: ABSTRACT： The design capacity of electric vehicle (EV) charger is increasing, but the low utilization rate of itself as well as its capacity still exists, which makes reactive power compensation for grid via EV V2G technology have a potential application. This paper proposes a V2G reactive power compensation utilization mode under a two-layer dispatching between power grid and charging operator. The reactive power-voltage regulation compensation is carried out by using the remainder capacity of the charger with the ordered charging mode. The upper layer is responsible for the overall dispatching and calculation by the grid and the lower layer is responsible for the coordinated response of the charging operator to the user. Finally, a variety of working conditions are simulated and analyzed, the results show that the proposed compensation mode can effectively improve the voltage amplitude of low voltage node, reduce all-day-period average voltage deviation, and effectively restrain additional network loss caused by EV charging.

Key words: V2G, reactive power compensation, dispatch, voltage deviation, charger

CLC Number:

TM 73

ZHANG Kai,YIN Zhongdong,YANG Xiaotian,YAN Zhuowu,HUANG Yongzhang. Reactive Power Compensation of Power Grid Based on V2G Reactive Power Dispatching[J]. Electric Power Construction, 2018, 39(1): 41-.

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