上位系統の電圧変動低減化のための配電用変電所における無効電力制御法

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  • 関﨑 真也
    広島大学大学院工学研究院電気電子システム数理部門
  • 青木 睦
    名古屋工業大学電気電子システム工学科
  • 鵜飼 裕之
    名古屋工業大学電気電子システム工学科

書誌事項

タイトル別名
  • Reactive Power Control in Distribution Substation for Reducing Voltage Fluctuation on Upper System

抄録

Since an output of Photovoltaic generation (PV) depends on weather conditions, it is concerned that the introduction of a large amount of PVs causes voltage fluctuation in power system. For this reason, in recent years, many investigations on voltage issues in distribution systems have been reported. Most of them assume that primary voltage of a distribution substation is constant under the condition that the primary voltage is properly managed using several facilities in transmission system. However, when a large amount of PVs is introduced in the distribution system, it is expected that the primary voltage of the distribution substation largely fluctuates and hence voltage fluctuation significantly occurs in the upper transmission system. Therefore, it is necessary to analyze in detail how much the introduction of PVs in distribution systems influences the voltage fluctuation in the transmission system. In this paper, a power system model in which both transmission and distribution systems are included is proposed, and the voltage fluctuation in the transmission system is analyzed in case that a large amount of PVs is connected into the distribution systems. Moreover, a reactive power control method is proposed in order to reduce the voltage fluctuation in the transmission system using Static Var Compensator (SVC) installed in the primary side of the transformer at the distribution substation. The effectiveness of proposed method is verified using some numerical simulations.

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