| 摘要 |
Power converters of a high-voltage d.c. transmission installation or other converter installations often require regulating circuits for several parameters. Here only one regulating circuit determines the control angle while the others must be kept ready to back up this circuit during rapid changes in the operating condition. According to the invention, the adjustment differences of all parameters are indeed covered and the adjustment parameters of a preprogrammed general control structure are prepared for each adjustment value, but there is only one regulator with the preprogrammed general control structure. This regulator is always engaged but acquires only the minium or maximum of the control differences and uses the control parameters allocated to the regulating circuit concerned at the time. |
