Investigation of the sympathetic tripping problem in power systems with large penetrations of distributed generation

摘要: This study contains an investigation into sympathetic tripping – the undesirable disconnection of distributed generators (DGs) (in accordance with recently-introduced G83/2 under voltage protection) when a network fault occurs in vicinity DG and is not cleared quickly enough by protection (i.e. before DG's operates). An evaluation severity proposal solutions to problem on typical UK distribution power presented. inverter model (as majority DGs will be inverter-interfaced) that characterises response its associated functions has been developed for use simulation through exhaustive laboratory testing commercially-available 3 kW application; observed responses have modelled incorporated system package. It shown, using presently-adopted interface settings, risk high several future scenarios. To mitigate this risk, impact modifying settings evaluated. two key findings determination conditions at which technique risk.