Comprehensive Evaluation Index System for Screening and Sequencing Power Transmission Grid Planning Projects

Abstract

As provincial Power Grid Corp launches medium and short term transmission grid planning, projects which are involved in these planning need to be screened and sequenced. Traditional screening and sequencing methods that depend on personal experience are lack of quantitative evaluation. Based on this, this paper presents a set of comprehensive evaluation index system, which is suitable for various planning projects to be evaluated under the same standard. The evaluation index system comprehensively evaluate the transmission grid planning projects from five aspects that is safety and reliability, economy and efficiency, coordination flexibility, social benefits and risk controllability. It provides an objective basis and reference for screening and sequencing the projects. There are several new index such as transmission capacity insufficient rate, substation capacity ratio, and so on. These new index make it more scientific to evaluate the urgency, coordination and output level of the projects. This research apply an overview method that is combination weighting of Analytic Hierarchy Process (AHP)-Entropy to make a comprehensive evaluation for the projects. The results of practical case analysis show that the proposed index system is reasonable and effective.