Virtual Synchronous Generator Based Auxiliary Damping Control Design for the Power System with Renewable Generation

Bingtuan Gao, Chaopeng Xia, Ning Chen, Khalid Mehmood Cheema, Libin Yang and Chunlai Li
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Bingtuan Gao: School of Electrical Engineering, Southeast University, Nanjing 210096, China
Chaopeng Xia: School of Electrical Engineering, Southeast University, Nanjing 210096, China
Ning Chen: State Key Laboratory of Operation and Control of Renewable Energy & Storage Systems, China Electric Power Research Institute, Nanjing 210003, China
Khalid Mehmood Cheema: School of Electrical Engineering, Southeast University, Nanjing 210096, China
Libin Yang: Qinghai Province Key Laboratory of Photovoltaic Grid Connected Power Generation Technology, State Grid Qinghai Electric Power Research Institute, Xining 810008, China
Chunlai Li: Qinghai Province Key Laboratory of Photovoltaic Grid Connected Power Generation Technology, State Grid Qinghai Electric Power Research Institute, Xining 810008, China

Energies, 2017, vol. 10, issue 8, 1-21

Abstract: Aiming for large-scale renewable energy sources (RES) integrated to power systems with power electronic devices, the technology of virtual synchronous generator (VSG) has been developed and studied in recent years. It is necessary to analyze the damping characteristics of the power system with RES generation based on VSG and develop its corresponding damping controller to suppress the possible low frequency oscillation. Firstly, the mathematical model of VSG in a per unit (p.u) system is presented. Based on the single-machine infinite bus system integrated with an RES power plant, the influence of VSG on the damping characteristics of the power system is studied qualitatively by damping torque analysis. Furthermore, the small-signal model of the considered system is established and the damping ratio of the system is studied quantitatively by eigenvalue analysis, which concluded that adjusting the key control parameters has limited impacts on the damping ratio of the system. Consequently, referring to the configuration of traditional power system stabilizer (PSS), an auxiliary damping controller (ADC) for VSG is designed to suppress the low frequency oscillation of the power system. Finally, simulations were performed to verify the validity of theoretical analysis and the effectiveness of designed ADC.

Keywords: renewable energy sources; virtual synchronous generator; auxiliary damping controller; small-signal model; eigenvalue analysis (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2017
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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