Impact analysis and risk assessment of supply and demand bilateral randomness on power system

摘要

With the high proportion of new energy access,the randomness of the supply side increases.The electrical power system system is transformed from a unilateral stochastic system on the demand side to a bilateral stochastic system on the supply and demand side.Firstly,this paper studies the potential risks of power system under the randomness of supply and demand sides;Then,according to the principles of integrity,relevance,operability,quantitative and qualitative combination,the evaluation index system of bilateral randomness for the safety and stability risk of power system is constructed.Finally,a risk assessment model is constructed based on the static subjective weights of FAHP and similarity clustering analysis and the dynamic objective weights of the improved CRITIC weighting method.