Index system and methods for sub-transmission grid AVC assessment

Given the lack of a quantitative evaluation method, the paper presents a hierarchically structured method on the evaluation of sub-transmission grid AVC. The evaluation method and implementation steps are proposed, including the performance indices and the evaluation method. For index, some of it including voltage qualified rate, network loss rate and voltage stability has long been familiar to all. When it comes to method, AHP(analytic hierarchy process) and weighted evaluation has been developed and used for years. The current AVC system in DeYang city, China is evaluated using a set of comprehensive evaluation index and the application of fuzzy synthetic evaluation method. The result of the evaluating system including single strategy result and AVC operation result, in specified ratings. The numerical example indicates the reliability of this evaluation system.