ZHANG Zhenxiao,NIAN Heng,LI Pei,et al.Voltage Compensation Capability Analysis and Improvement Method for Unified Power Quality Conditioner with Energy Storage[J].Automation of Electric Power Systems,2022,46(23):151-159.
ZHANG Zhenxiao,NIAN Heng,LI Pei,et al.Voltage Compensation Capability Analysis and Improvement Method for Unified Power Quality Conditioner with Energy Storage[J].Automation of Electric Power Systems,2022,46(23):151-159. DOI: 10.7500/AEPS20220117002.
Voltage Compensation Capability Analysis and Improvement Method for Unified Power Quality Conditioner with Energy Storage
The unified power quality conditioner (UPQC) with energy storage can compensate the load voltage when the power grid voltage drops. When the voltage sag exceeds the compensation capacity of the series-side converter
the voltage compensation capability can be improved by using the power compensation of the shunt-side converter synergistically. This paper analyzes the coupling influence of voltage compensation between series- and shunt-side converters
and establishes a mathematical model of the voltage compensation capability of UPQC considering the capacity configuration of converters and the load condition. Aiming at the power characteristics of the shunt-side converter brought by the access of energy storage
the power distribution of the shunt-side cooperative control is studied
and an improved distribution strategy of power commands of the shunt-side converter that can further improve the system voltage compensation capability is obtained. Then
this paper proposes a control method of series- and shunt-side converters for the cooperative voltage compensation of the UPQC with energy storage. Finally
a model of UPQC with energy storage for voltage compensation is built and verified by the simulation based on the real-time digital simulation system. The simulation results show that the proposed control strategy can improve the voltage compensation capability of UPQC with energy storage under the same capacity configuration.
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Related Author
Zhenxiao ZHANG
Heng NIAN
Pei LI
Zhiquan MA
PENG Neng
PENG Minxuan
LI Qionglin
DAI Shuangyin
Related Institution
Hubei Key Laboratory of Power Equipment & System Security for Integrated Energy (Wuhan University)
School of Electrical Engineering and Automation, Wuhan University
State Grid Henan Electric Power Company
Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology, Ministry of Education (Northeast Electric Power University)
National Electric Power Conversion and Control Engineering Technology Research Center(Hunan University)