Risk assessment model of power network based on equipment condition and entropy combined weight method

摘要

The risk assessment of power network is beneficial to improve the reliability of power system. It only considers the condition of the equipment itself in conventional power network risk assessment methods, but lacks of a consideration of the various influence factors in the network. A comprehensive risk assessment method based on Equipment Condition and entropy is proposed to evaluate power network in this paper. Firstly, a model of power network is established, considering the key risk factors including equipment condition, network structure, loads, natural and weather etc. Then, the AHP method is used to determine the subjective weight, while entropy method is applied to obtain the objective weights. After that, the combined weights are calculated based on subjective and objective weights. Last, the effectiveness of the model is proved by two study cases, the weights parameters in the model can be applied in the other risk assessment of power networks.