Power controlbased voltage control strategy of LV distribution network with high penetrations residential PVs
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    Abstract:

    Onload tap changers(OLTC)and capacitor banks have been widely utilized to deal with the problem of voltage violation in lowvoltage(LV)distribution networks with highpenetration photovoltaic(PV). Different control strategies would directly affect the node voltage and operation number of OLTC tap and capacitor bank. In order to seek a suitable control strategy for handling the voltage violation problem in LV distribution network, a power controlbased(PCB)voltage control strategy is proposed on the basis of the analysis of the influence of OLTC reference voltage on the voltage control strategy and the voltage sensitivity matrix theory. In order to consider the influence of time sequence and randomness on PV output and load, probabilistic power flow based on sequential Monte Carlo simulation is utilized to calculate the probability values of network active power loss and node voltage violation probability. The proposed method is compared with the time controlbased(TCB)strategy in the test case. It is shown that the TCB based on the power control not only reduce the node voltage violation probability effectively, but also effectively reduce the action times of taps and capacitor banks, reduce the active power loss, and improve the ability of lowvoltage distribution network to absorb highpermeability household photovoltaic power generation.

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伍惠铖,王淳,尹发根,陈宇杰,刘宽.基于功率控制的含高渗透率户用光伏低压配电网电压控制策略[J].电力科学与技术学报英文版,2020,35(5):27-35. WU Huicheng, WANG Chun, YIN Fagen, CHEN Yujie, LIU Kuan. Power controlbased voltage control strategy of LV distribution network with high penetrations residential PVs[J]. Journal of Electric Power Science and Technology,2020,35(5):27-35.

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  • Received:
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  • Online: April 16,2021
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