| 摘要 |
PURPOSE:To obtain a synchronously closing device which controls a switching time of generators in a short time with high reliability in a power source system in which a plurality of generator outputs can be connected through breakers. CONSTITUTION:Terminal stations 14 for controlling synchronous closing of breakers 5, 61, 62 belonging to areas of generators 1, are provided at the respective areas. Each station 14 has a digital input circuit 8 which always inputs a system decision signal in an own area and a system power amount, an analog input circuit 10, a multiple transmitter 14 which transmits and receives a signal between terminal stations of other areas to be able to detect a malfunction, a calculator 11 for calculating at the time of synchronous closing, and a digital output circuit 12 which outputs a signal according to the calculated result. The synchronously closing control is performed only when the breaker of the area is to be synchronously closed, the control is stopped when the transmitter is abnormal, and the station to be closed is stopped for the control when the station to be closed starts a phase detecting control. |
