Space-time Cooperative Framework for Defending Blackouts Part I From Isolated Defense Lines to Coordinated Defending
XUE Yu-sheng ( Nanjing Automation Research Institute, Nanjing 210003, China)
This three-part paper proposes an adaptive space-time cooperative framework for defending power system blackouts. Its essentials are: acquisition and integration of wide area measurements from RTUs, PMUs, fault recorders and protection systems; trajectory-based data mining and quantitative security analysis; adaptive optimization of preventive control, emergency control, corrective control and restoration control; coordination among these controls. 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 East China Power Grid. In the first part, recent blackouts around the world are investigated and mechanisms of blackouts are revealed. The three-defense-lines criterion, which is the security standard for power systems in China, is thoroughly reviewed. It is suggested to advance the existing SCADA/EMS systems to dynamic ones, namely DSCADA/ DEMS.