Design of new distribution network security risk assessment method under flood disaster
At present,cloud model is often used to calculate the operation risk of new distribution network under the background of flood disaster,which is vulnerable to the impact of system voltage out-of-limit,making the assessment accuracy low.Watts.The design of new distribution network security risk assessment method under flood disaster is proposed.Select the risk assessment indica-tors that can represent the operation status of the power grid system from three angles before,during and after the flood disaster,estab-lish the assessment indicator system,calculate the membership function of each indicator in the static and dynamic dimensions,based on the system risk evaluation set vector and index set vector,the overall weight of each index in the criterion layer is calculated.On this basis,the voltage threshold probability of the power system is determined based on the reliability principle of the index,so as to obtain the comprehensive safety risk score.The comparison experiment results show that the designed method can achieve higher eval-uation accuracy for the new distribution network security risk under flood disaster.
flood disasternew distribution networksafety riskrisk assessment
万方数据
维普
