“From isolated defense lines to space-time cooperative schemes against blackouts”

This presentation investigates Chinese standards for power system security and the practices in the relevant three-defense-lines. It also proposes an adaptive space-time cooperative framework for defending power system blackouts. Its essentials are: (1) acquisition and integration of wide area measurements from RTUs, PMUs, fault recorders and protection systems; (2) trajectory-based data mining and quantitative security analysis; (3) adaptive optimization of preventive control, emergency control, corrective control and recovery control; (4) coordination among these controls. Recent blackouts around the world are investigated and their mechanisms are revealed. The three-defense-lines criterion, which is the security standard for power system in China, is thoroughly reviewed. It is suggested to advance the existing SCADA/EMS systems to dynamic ones, namely DSCADA/DEMS. Based on relevant research achievements, such a system, named as Wide ARea Monitoring Analysis Protection-control (WARMAP), is well on the way to building in both East China Power Grid and Jiangsu Power Grid.