8th International Conference on Advanced Power System Automation and Protection (APAP2019)

779 / 2019-04-28 21:18:56

Dynamic reactive power coordination control method for synchronous condenser in high-voltage DC receiving end converter station

DC control and protection system,Dynamic reactive power coordination control,Power systems computer aided design,Synchronous condenser,UHVDC transmission

In recent years, UHVDC transmission has developed rapidly. Large-capacity DC converters generally use semi-controlled devices. The receiving converter station consumes a large amount of reactive power, which is easy to change when the AC bus voltage drops. The commutation failure happened, and more reactive power is absorbed from the AC system, which threatens the stability of the bus voltage. This paper proposes a DC control and protection system and SC coordination to control the reactive power scheme. Change the reactive power output of the synchronous condenser before the AC filter group is switched, so as to avoid the risk of the grid voltage falling over the limit and improving the stability of the AC bus voltage.