| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a controller for an electric generator that performs stable control operation without making an electric generator parallel off while speedily following up abrupt change such as an electric power command accompanying occurrence of an accident in an electric power system. <P>SOLUTION: When an abnormality detection signal is input, a selector 51 sends out a primary frequency command ω1 from a frequency command correction circuit 3 to an integrator 20 for a period of one cycle of operation instead of a torque command ΔT from a divider 19. A selector 52 outputs the primary frequency command ω1 as a frequency command ωs. The selectors 51, 52 put switching positions thereof back to original positions thereof after the one cycle of operation. Through the switching operation, an initial value of integrating operation by the integrator 20 is temporarily reset with the primary frequency command ω1 on occurrence of a system accident and the integrating operation is restarted with the initial value, thereby an unstable phenomenon such as unnecessary oscillation is suppressed between the frequency command ωs and the primary frequency command ω1, and the frequency command ωs can be made to speedily follow the primary frequency command ω1. <P>COPYRIGHT: (C)2013,JPO&INPIT |
