Characteristic Analysis of Reactive Power Compensation Device at HVDC Converter Station

The reactive power compensation of converter station plays an important role in the design of HVDC project. Reactive power configuration for HVDC converter station is introduced in this paper. The regulation and control of reactive power and devices are considered from both steady-state and dynamics aspects. The performance of various reactive power configuration methods are compared and summarized. The principle, characteristics and application of shunt and series reactive power compensation device and a brief description of the reactive power support capacity of AC system are given. The adjustment of transformer tap changer and firing angle can also affect reactive power level. It comes to a conclusion that proper reactive compensation devices should be chosen carefully in converter station, and AC system reactive support capacity and the behavior of HVDC system must be fully taken into consideration when the comprehensive configuration of reactive power of converter station is determined.