Real time simulation on the second channel from Xinjiang to Northwest power network with multi FACTS

Different types of FACTS devices are set at the second channel from Xinjiang to Northwest power network, which are close to Qinghai-Tibet HVDC. The action of FACTS may impact on Qinghai-Tibet HVDC. In this paper, the digital-analog hybrid real-time simulation model of the second channel from Xinjiang to Northwest power network is built, which includes FACTS devices and Qinghai-Tibet HVDC system. The physical HVDC protection devices are used, which have the same characteristic with the actual device. Researches are carried out on the impact of the FACTS action on the AC system and Qinghai-Tibet HVDC at the steady state. The impact of FACTS operating condition and switching MCR on power system and Qinghai-Tibet HVDC are studied. Studies show that FACTS can adjust correctly according to the design requirements during steady state and transient process. The network and Qinghai-Tibet HVDC can be in stable operation under different FACTS operating conditions and the MCR switching process. It can provide technical support on the safety and stability of Northwest China grid and Qinghai-Tibet HVDC link.