| 摘要 |
<p>PURPOSE:To minimize variation of transmission power, by a method wherein when an emergency sealed oil pump is started and its exhaust pressure is of less than a prescribed value, a hydrogen atmosphere expulsion valve in a turbine generator is opened and a load of the generator is reduced. CONSTITUTION:If exhaust pressure of a normal sealed oil pump 20 is decreased during operation of the normal sealed oil pump 20, a pressure relay 6 acts and an emergency sealed pump 7 is started. If exhaust pressure is insufficient at the starting of the emergency sealed pump 7, a pressure relay 18 acts and a hydrogen atmosphere expulsion valve 22 is fully opened for a definite time so as to continue operation of the generator by the insufficient sealed oil pressure. At the same time, control signal to decrease a load of the turbine generator dependent of the decreased hydrogen gas pressure is supplied to a load runback device of the turbine generator.</p> |
