| 摘要 |
<p>PROBLEM TO BE SOLVED: To reduce a load when breaking a generator breaker by outputting a zero command value from a zero command circuit simultaneously with or before the opening of the generator breaker when a load break command is outputted for narrowing down an effective power or an effective power, a reactive power, and an output power. SOLUTION: Zero command switching circuits 31 and 32 are switched to the side of zero command circuits 33 and 34 according to a load break command being outputted when an accident occurs regarding measures against a break corresponding to a load break command due to an accident or the like, thus enabling a command value Iq* of a q-axis control command to reach zero, an effective power to be narrowed down, and at the same time a command value Id* of a d-axis control command to reach zero, and an effective power, a reactive power, and an output power to be narrowed down. As a result, power and voltage are narrowed down before the generator breaker is opened, thus suppressing the release energy of the generator breaker and reducing the load when the generator breaker breaks.</p> |
