Distribution Network Reliability Evaluation with Load Importance Degree and Isolated Island Operation

Abstract

Abstract Supply power for important load in priority is the fundamental principle during power shortage. For the reason that the existing power load classification principle is too simple to compare the importance degree of loads at the same level, this paper proposed a comprehensive evaluation method of load importance degree. First, an indicator system is established to measure load importance. Then a comprehensive evaluation model is designed basing on improved rank correlation analysis method, which sets weights based on subject and object analysis and calculates the importance degree value according 4 indicators, including outage cost. Finally, evaluating the distribution network reliability with load importance degree. Simulation results on IEEE-RBTS BUS6 system shows the validity and practicality.