METHOD FOR INHIBITING MULTIPLE CONVERTER STATIONS INTO PASSIVE CONTROL MODE IN ISLAND STATE

摘要

Provided is a method for inhibiting multiple converter stations into a passive control mode in an island state by means of dividing the converter stations into groups beforehand. The grouping principle is grouping the converter stations together which are connected by alternating current lines on the alternating current side under a normal operation condition. The priorities of the converter stations in each group are set beforehand for setting the relevant fixed values of the converter stations for island detection. The setting principle is that the higher the priority is, the more sensitive the relevant fixed value of the converter station is, and the easier it is for the corresponding converter station to detect the island state. The converter station having detected the island state would go into the passive control mode only when all the other converter stations of higher priority than that of said converter station in the same group send enabling signals.