Large disturbance stability evaluation of interconnected multi‐inverter power grids with VSG model. Issue 13 (19th January 2018)

• Record Type: Journal Article
• Authors: Wang, Keyou; Qi, Chen; Huang, Xin; Li, Guojie
• Is Part Of: Journal of engineering. Volume 2017:Issue 13(2017)
• Page Start: 2483
• Page End: 2488
• Publication Date: 2018-01-19
• Subjects: synchronous generators -- Lyapunov methods -- time‐domain analysis -- invertors -- machine control; time‐domain simulations -- energy boundary surface method -- transient energy function method -- VSG‐controlled inverters -- power system -- Lyapunov like energy function -- electromechanical dynamic model -- VSG regulation scheme -- virtual rotor angle stability -- virtual synchronous generator -- VSG model -- interconnected multiinverter power grids -- large distribution stability evaluation; Engineering -- Periodicals; Engineering; Electronic journals; Periodicals; 620.005
• DOI: 10.1049/joe.2017.0775
• Languages: English
• ISSNs: 2051-3305

Abstract

Abstract : The virtual rotor angle stability of interconnected multi‐inverter power grids with virtual synchronous generator (VSG) model is studied under large disturbance. According to the VSG regulation scheme, its electromechanical dynamic model is derived. A Lyapunov like energy function candidate of the power system with VSG‐controlled inverters is constructed to adopt the transient energy function method. After system large disturbances, the critical clearing times are obtained through potential energy boundary surface method and also verified through time‐domain simulations. Furthermore, the impacts of virtual control parameters on system behaviours are also discussed and demonstrated through simulations.