Index System and Method of Power Grid Risk Assessment with Participation of Adjustable Source and Load Resources
In response to the problem that traditional power grid risk assessment methods can't simultaneously meet the risk assessment needs of three sides of the source load after large-scale access of adjustable resources on both sides of the source load,this paper constructs a power grid risk assessment index system that considers the participation of adjustable resources on both sides of the source load,and explores the quantification of index parameters and the overall risk calculation method of the system.Firstly,it analyzes the influencing factors of power grid operation risk and constructs a power grid risk assessment index system based on each influencing factor.Secondly,it designs a quantitative calculation and expression method for the severity and probability of occurrence of each risk indicator.Finally,it designs a comprehensive calculation method for system overall risk based on improved analytic hierarchy process(AHP)and determines the corresponding operational risk level.The paper uses the improved IEEE 14 node system and actual power grid example model to simulate and analyze the indicator system and evaluation method.The results show that the constructed risk indicator system and evaluation method can simultaneously predict the risk of source network load,which has certain practicality and effectiveness.In addition,the system risk score obtained by the proposed method is 10 times smaller than the average deviation rate of the results obtained by using the AHP weight calculation method,which proves that this proposed evaluation method has higher accuracy and is more objective and reasonable.
source and load adjustable resourcerisk assessment indicator systemrisk severityrisk occurrence probabilityimproved analytic hierarchy process
万方数据
维普
