| 摘要 |
<P>PROBLEM TO BE SOLVED: To solve the problem with a conventional system interconnection system that opens a circuit breaker after controlling the current of the circuit breaker to zero in advance when a system linkage operation is switched to a self-support operation, wherein reliability is reduced because a control system to reset a current to zero is required and the control system is complicated. <P>SOLUTION: When the system linkage operation is switched to the self-support operation, a load power in the system linkage operation is calculated, a power conversion device outputs the load power thus calculated when the system linkage operation is switched to the self-support operation, and the circuit breaker is opened after the current of the circuit breaker is sufficiently reduced. <P>COPYRIGHT: (C)2011,JPO&INPIT |
