ACTIVE ANTI-ISLANDING METHOD AND APPARATUS FOR DISTRIBUTED GENERATORS USING VOLTAGE POSITIVE FEEDBACK CONTROL

摘要

PURPOSE: A method and device for detecting the active single driving of distributed power by voltage forward feedback control are provided to guarantee the safety of a human life and increase the driving reliability of distributed power. CONSTITUTION: A first current command value is generated using effective power. A voltage variation acceleration component is generated using a load and a connection point voltage. The voltage variation acceleration component is added to the first current command value to generated a second current command value. An inverter is controlled according to the second current command value by a voltage forward feedback method. Single driving is detected by inducing the variation of the effective power or the connection point voltage.