The Expected Contingencies and Load Transfer Ability Analysis of Urban Distribution Network

Abstract Due to lacking of the foresight of power accident and analysis of serious degree of the consequences. The expected contingencies and load transfer ability is analyzed in this paper. The expected contingencies analysis model is proposed according to the analysis of the characteristics of urban distribution network. This model is based on the perspective of network topology analysis, according to the data of flow; determine the optimal load transfer solutions. Through the lost load this quantitative index reflects the serious degree of contingencies and according to the lost load in sequence from high to low, screening and ranking the contingencies, find the systems weakness. The actual examples sued in this paper proves the feasibility of the methods proposed, which using analysis the expected contingencies and load transfer ability can accurately reflect the severity of the contingencies and the load transfer ability. Provide the scientific basis for urban distribution network security evaluation.