State Evaluation Based on AHP Fuzzy Theory of High Voltage Switchgears

For evaluating the state of switchgears, we proposed an method based on AHP fuzzy theory and on-line detection data. In an evaluation, the membership functions and fuzzy weighted calculation were determined by hierarchial relevance of various experiments data and influential factors. Moreover, combining the fuzzy calculations with greading method, taking the different furture of information and theory of entropy weight into consideration, we made full use of experimental data, adopted synthetical results of state evaluation method close to real-state condition of switchgear, and adopted detection data from the 10 kV substation in Bailong Xincun, Yunnan, China, to prove the effectiveness of the proposed method.