PROJECT TITLE :

Risk-Based Power System Security Analysis Considering Cascading Outages

ABSTRACT:

Successful development of good grid demands strengthened system security and reliability, that needs effective security analysis in conducting system operation and growth designing. Classical N - one criterion has been widely used to examine every creditable contingency through detailed computations within the past. The adequacy of such approach becomes uncertain in many recent blackouts where cascading outages are usually involved. This could be attributed to the increased complexities and nonlinearities involved in operating conditions and network structures in context of sensible grid development. To address security threats, notably from cascading outages, a brand new and economical security analysis approach is proposed, which includes cascading failure simulation module (CFSM) for post-contingency analysis and risk evaluation module (REM) based on a decorrelated neural network ensembles (DNNE) algorithm. This approach overcomes the drawbacks of high computational cost in classical N-k-induced cascading contingency analysis. Case studies on 2 totally different IEEE check systems and a sensible transmission system-Polish 2383-bus system have been conducted to demonstrate the effectiveness of the proposed approach for risk evaluation of cascading contingency.