| 摘要 |
<p>PROBLEM TO BE SOLVED: To prevent deterioration and damage according to an overload, by surely preventing overloading of a generator and a main transformer. SOLUTION: By a generator-rated apparent power value, set in a generator- rated apparent power setting part 2 and a generator output power value obtained in an effective power arithmetic part 1, an effective power limit value (maximum value) is obtained from generator-rated apparent power. On the other hand, by an apparent capacity value, subtracting an in-station load apparent capacity obtained in an in-station load apparent capacity arithmetic part 4 from a main transformer rated apparent capacity value, set in a main transformer rated apparent capacity setting part 3, a reactive power limit value (maximum value) from a main transformerrated apparent capacity is obtained, based on a limit value (equipment capacity reactive power) of the smaller one of both the reactive power limit values obtained in a Lower selection part 9, reactive power of a generator is controlled.</p> |
