Power Grid Security Comprehensive Assessment Based on Multi-Level Grey Area Relational Analysis
Cui Mingjia · Power System Technology · 2013
To meet the demand of assessment on power grid secure operation a set of relatively complete multi-level beforehand comprehensive assessment index system is constructed and a multi-level gray area relational analysis(MGARA) based comprehensive assessment model of power grid security is proposed. The resolution ratio of the proposed assessment model is evaluated by gray area relational analysis(GARA) to incarnate the integrity of the association. The game set model is used to objectively combine the weights by analytic hierarchy process(AHP), artificial neural network(ANN) and entropy weight method, and the MGARA is used to perform comprehensive assessment. The operation condition of five newly-built items of a certain power grid is comprehensively assessed by the proposed method and the assessment results are compared with those by fuzzy comprehensive evaluation(FCE), and the comparison results show that the proposed method is effective and reasonable.