Coordinated Operation of HVDC/SVC in China-Russia Back-to-Back Converter Station

The AC system at the China side of China-Russia back-to-back converter station located at China-Russia border is weak, to solve this problem a static var compensator (SVC) will be installed to match up with the operation of HVDC system and enhance transient stability of AC system. By means of simulation the capacity of the SVC is decided while following factors, such as restraining transient voltage fluctuation of converter bus, increasing the capacity of sectionalized banks of AC filter/capacitor and improving the stability of both AC and HVDC systems at China side, are taken into account. According to characteristics of SVC and performance verification of HVDC system, the operation characteristics of HVDC and SVC under different operating conditions are analyzed; on this basis the control objectives of SVC and the coordinated control principle by which SVC matches up with the operation of HVDC are proposed.