Research on Reactive Power Balance and Its Configuration for Deyang Converter Station

Reactive power balance of converter station exerts a profound influence on the normal operation of AC and DC system. Being DC link project of Sichuan and Shaanxi "hydro power and thermal power aiding each other", Debao HVDC project optimizes the two provinces\´ allocation of resource and energy .According to the requirements of reactive power balance when HVDC transmission is in stable operation, combined with reactive power compensation capacity of AC system, this paper mainly analyzes the configurations of reactive power compensation devices and reactive power consumption under different operation modes, reactive power balance of Deyang converter station as rectifier station and inverter station respectively are studied. and finally, the correctness of reactive power compensation capacity of Deyang converter station and feasibility of its configuration scheme are proved through calculation and digital simulation.