| 摘要 |
PURPOSE:To attain high-speed control accordant with the control responsiveness by using a controller for phase control of a reactor and using the voltage deviation signal for control of the make/break of a capacitor bank. CONSTITUTION:A reactive power compensator contains two capacitor banks and a reactor 2 and controls a thyristor switch 4 by the deviation given from a transformer 5, a voltage detector 6, etc. through an ignition angle controller 12 and a synchronizing arithmetic circuit 14. Thus the reactive power compensation is performed. This device detects the actual value of the system voltage through the transformer 5 and the detector 6 and applies the voltage deviation DELTAV obtained by adding 8a said actual voltage value to the set value 7 to a controller 9 to obtain the reactive power command value. The phase of the switch 4 of the reactor 2 is controlled via a nonlinear correcting circuit 11 and the controller 12. Thus the delayed reactive power is controlled. Furthermore said deviation DELTAV is added 8b to the output of a bias circuit 10. Then the capacitor bank is made nad broken via a level detector (bank selector) 13. |
