LI Xidong,PENG Ke,YAO Guangzeng,et al.Robust Stability Control of Flexible DC Distribution System Based on H∞ Loop Forming Method[J].Automation of Electric Power Systems,2021,45(11):77-85.
LI Xidong,PENG Ke,YAO Guangzeng,et al.Robust Stability Control of Flexible DC Distribution System Based on H∞ Loop Forming Method[J].Automation of Electric Power Systems,2021,45(11):77-85. DOI: 10.7500/AEPS20200628005.
Robust Stability Control of Flexible DC Distribution System Based on H∞ Loop Forming Method
Flexible DC distribution system is an important development trend of future distribution system
which can greatly improve the power quality
reliability and operation efficiency of urban distribution system. Some uncertain factors
such as intermittent fluctuation of distributed photovoltaic power supply
random disturbance of DC loads
perturbation of filter inductance and resistance parameters
and perturbation of droop coefficient
can easily lead to the instability of DC distribution system. A robust stability control method based on
H
∞
loop forming method and standard mutual quality decomposition technology is proposed. The simulation model of a double-terminal flexible DC distribution system is built
and the stability differences of DC voltage before and after the introduction of the robust controller are compared and analyzed. The results show that the designed robust controller can effectively deal with the uncertainties and suppress the low-frequency oscillations of the system. Also
the feasibility and effectiveness of the proposed method are validated.
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Related Author
LI Xidong
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Related Institution
State Grid Jibei Electric Power Research Institute (Flexible Resource-Network-Demand-Storage Co-operation and Control Laboratory)
College of Electrical Engineering, Zhejiang University
State Grid Jibei Electric Power Research Institute
Flexible Resource-Network-Demand-Storage Co-operation and Control Laboratory
Key Laboratory of Modern Power System Simulation and Control & Renewable Energy Technology, Ministry of Education (Northeast Electric Power University)