Coordinated Control of Multiple Virtual Synchronous Generators in Mitigating Power Oscillation

Pan Hu, Hongkun Chen, Kan Cao, Yuchuan Hu, Ding Kai, Lei Chen and Yi Wang
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Pan Hu: State Grid Hubei Electric Power Research Institute, Wuhan 430072, China
Hongkun Chen: School of Electrical Engineering, Wuhan University, Wuhan 430072, China
Kan Cao: State Grid Hubei Electric Power Research Institute, Wuhan 430072, China
Yuchuan Hu: State Grid Hubei Electric Power Research Institute, Wuhan 430072, China
Ding Kai: State Grid Hubei Electric Power Research Institute, Wuhan 430072, China
Lei Chen: School of Electrical Engineering, Wuhan University, Wuhan 430072, China
Yi Wang: State Grid Hubei Electric Power Research Institute, Wuhan 430072, China

Energies, 2018, vol. 11, issue 10, 1-17

Abstract: Virtual synchronous generators (VSGs) present attractive technical advantages and contribute to enhanced system operation and reduced oscillation damping in dynamic systems. Traditional VSGs often lack an interworking during power oscillation. In this paper, a coordinated control strategy for multiple VSGs is proposed for mitigating power oscillation. Based on a theoretical analysis of the parameter impact of VSGs, a coordinated approach considering uncertainty is presented by utilizing polytopic linear differential inclusion (PLDI) and a D-stable model to enhance the small-signal stability of system. Subsequently, the inertia and damping of multiple VSGs are jointly exploited to reduce oscillation periods and overshoots during transient response. Simulation, utilizing a two-area four-machine system and a typical microgrid test system, demonstrates the benefits of the proposed strategy in enhancing operation stability and the anti-disturbing ability of multiple VSGs. The results conclusively confirm the validity and applicability of the method.

Keywords: multiple VSGs; oscillation mitigation; coordinated control; small-signal and transient stability (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: 2018
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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