| 摘要 |
<p>PURPOSE:To enable to stop operation of a wind power plant in a safe and reliable manner, by employing such an arrangement that a generator is not tripped for a certain while when a wind turbine is tripped. CONSTITUTION:An interlocking circuit includes a contact 16 that is closed when the speed of rotation of a wind turbine becomes lower than a prescribed speed, a contact 17 that is closed when a generator breaker is closed, and a contact 18 that is opened when some trouble is caused on the side of the generator. Therefore, even if a relay 8 for instructing tripping of the wind turbine is energized, operation of the generator is continued since a relay 14 for instructing tripping of the generator breaker is not energized simultaneously with energization of the relay 8. When the speed of rotation of the wind turbine becomes lower than a prescribed value, the contact 16 is closed, the relay 14 is energized and a contact 15 is closed, so that the generator breaker is tripped.</p> |
