Multi Time Scale Reactive Power and Voltage Optimization of Distribution Network Considering Photovoltaic Multi State Regulation Capability

doi:10.11930/j.issn.1004-9649.202012038

Abstract

Abstract: As the penetration of Distributed Generators (DGs) grows larger, the fluctuation and uncertainty of DGs have posed great challenges to the power quality and stability of the distribution network. Considering that the existing slow-motion regulating equipment does not meet the requirements of reactive voltage regulation, a multi-time scale reactive voltage coordinated control scheme for distribution network is proposed. It is aimed to improve the voltage deviation and fluctuation caused by the random volatility of photovoltaic (PV) by considering the coordination regulation ability between the distributed photovoltaic multi-operation state and the traditional reactive power regulation equipment. The active power and reactive power of PV, capacitor operation and reactor operation are coordinated to achieve the goal both in day-ahead optimization and minutes’ optimization. Finally, the validity of the proposed method is verified by the simulations with a 21-node actual distribution system with distributed PVs in North Hebei grid.

Key words: reactive power optimization, distributed generation, multiple time scales, voltage control, distribution network

YANG Genye, SUN Rongfu, DING Ran, XU Haixiang, CHEN Can, WU Linlin, CHEN Qifang, XIA Mingchao. Multi Time Scale Reactive Power and Voltage Optimization of Distribution Network Considering Photovoltaic Multi State Regulation Capability[J]. Electric Power, 2022, 55(3): 105-114.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202012038

https://www.electricpower.com.cn/EN/Y2022/V55/I3/105

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