Detailed analysis of grid connected and islanded operation modes based on P/U and Q/f droop characteristics

This paper presents a thorough control structure of the distributed generators inside microgrid during both grid-connected and islanded operation modes. These structures DGs voltage source inverters are implemented in synchronous reference frame (SRF) controlled using linear PI controllers. By implementing structures, desired real reactive power can be efficiently transferred to local loads utility load by generating units. A modified droop technique is introduced facilitate performance modes operation. The active sharing demand between grid performed this drop mode. system intentional islanding event increase investigated. effectiveness offered confirmed through simulation results