| 摘要 |
PURPOSE:To improve the received power-factor, by taking the operation outputs of electric generators into consideration and distributing generator control instruction signals to automatic voltage regulators for the generators and thereby controlling the reactive power share. CONSTITUTION:The received power-factor of an electric station connected to a plurality of electric generators and loads is improved. The difference between the reactive power detected by a reactive power detector 1 and a setpoint is determined. A polarity discriminator 3 is operated by the difference signal DELTAQ. The output signals of output limit setting units 6 for the generators 10 are applied to generator output margin detectors 7 to produce output margin signals, which are set as distribution coefficients for the generators 10 by an adder 8 and calculators 9. Multipliers 4 multiply said difference signals by the distribution coefficients. Then, the products are applied to the generators 10 through controllers 5. Therefore, the reactive power share can be controlled in consideration of the margins between the real outputs of the generators and allowable values therefore. |
