The intelligent substation equipped with both SVG and TSC devices can use the combination advantage of them to achieve smart,flexible and dynamic compensation for the required reactive power.This paper mainly introduces the GM intelligent substation's SVG and its intelligent coordination control system with TSC from the aspects of principle,structure,performance and control strategy.At the same time,it analyzes the SVG protection tripping event,and finds out the reason,That is,the system voltage harmonic surge triggering related protection malfunction.In the end it gives the relevant rectification measures and recommendations,hopping useful for the design and inspection of the similar FACTS equipments'(such as STATCOM,UPFC,etc.).