IEEE Transactions on Energy Conversion · 2014 · 47 citations · 12 references
Distributed Energy SystemEngineeringGrid-connected Photovoltaic SystemsPower Grid OperationVirtual Power PlantDistributed Energy GenerationPhotovoltaic SystemPower ElectronicsPhotovoltaic Power StationPhotovoltaicsTemporary OvervoltagesWidespread PenetrationPower SystemSystems EngineeringMitigation StrategyPower SystemsElectrical EngineeringSolar PowerElectric Grid IntegrationStudy Pv SystemSmart GridEnergy ManagementRooftop Photovoltaics
Widespread penetration of distributed generators (DGs) into the power system has aggravated the problem of temporary overvoltages (TOVs), which can inflict substantial damages on the DGs, equipment, and other customers. Through slight modifications to the power-electronic circuit and its control, this paper proposes a strategy for limiting the TOVs caused by single-stage grid-connected photovoltaic (PV) energy systems. This paper also proposes a reduced TOV mitigation strategy for applications where a somewhat less effective, but also less expensive, solution is acceptable. The effectiveness of the proposed TOV mitigation strategy is demonstrated through time-domain simulation studies conducted on a detailed switched model of a study PV system in the PSCAD/EMTDC software environment.
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