2IEEE Std 1547.1-2005, IEEE standard conformance testProcedures for equipment interconnecting distributedre-sources with electricpower systems[S]. 2005.
3Haeberlin H, Liebi C, Beutler C. Inverters for Gridconnected PV Systems: Test Results of some newInverters and latest Reliability Data of the most popularInverters in Switzerland[C]//14th European PhotovoltaicSolar Energy Conference Barcelona, 1997.