| 摘要 |
PURPOSE:To stabilize a power line, by synthesizing signals for the speed, frequency and power of a plurality of synchronous machines through an incomplete differentiation circuit with each other when the synchronous machines are connected to each other not through any independent impedance. CONSTITUTION:When electric generators 11, 12 are connected to an identical bus and the bus is connected to a power line through a single transformer 15, a signal S1 for stabilizing the speed, frequency and power of the generator 11 is supplied to a complete differentiation circuit 16 and a signal S2 for stabilizing the speed, frequency and power of the other generator 12 is supplied to the incomplete differentiation circuit 17. These stabilizing signals are synthesized with each other by an operational amplifier OA2. The signal synthesized is applied to automatic voltage regulators for the power generators through appropriate compensation function circuits. Because the operational amplifier OA2 detects the fluctuation in the power between the power line and the power generators but does not detect the fluctuation in the power between the generators, the operational amplifier is not affected by the frequency of the fluctuation in the power between the power generators. Thus, the power line is stabilized. |
