Research on the selection of cable connection modes in medium voltage distribution network considering reliability and economy

Reasonable selection of connection modes in medium voltage distribution network will help to improve the comprehensive optimization level of distribution network planning. Three methods of the selection of cable connection modes in medium voltage distribution network considering reliability and economy, including absolute evaluation of reliability, increment comparison of reliability and cost-benefit analysis of reliability, were proposed on the basis of the study of the reliability and economy of the typical cable connection modes in Suzhou area. Then, three methods were used to analyze the reasonable cable connection mode in a commercial core area in Suzhou. The results showed that the three methods can ensure the reliability and fully improve the efficiency of resource utilization at the same time through comprehensive analysis.