Progresses of blackout defense systems in China

This paper investigates Chinese standards for power system security and the practices in the relevant strategy. Considering the cascading features of typical system-wide blackouts around the world, further emphasis is given to integration of various wide area measurements, trajectory-based knowledge extracting, on-line quantitative security analysis, and adaptive optimization of preventive control, emergency control, corrective control and recovery control, in order to upgrade the three-defense-line to an adaptive space-time cooperative framework. Functions, features and engineering experiences of such a framework in China are reported.