| 摘要 |
<p>PURPOSE:To transmit power stably from a generator by doubling fire controllers and switching to the other when one controller malfunctions. CONSTITUTION:A monitor 5 detects the outputs of A-system side AVR333, B-system side AVR332, A-system side firing unit 321, B-system side firing unit 322 and CT6. In case that the deviation of the AVR outputs of the A- and B-systems or the outputs of the firing controls increases, when no malfunction exists in the B-system AVR, firing unit and malfunction occurs in the operating state of the generator, a changeover switch 4 is driven to generate a signal for switching a control system from A-system side to the B-system side.</p> |
