Study on Reliability Evaluation Indices System of Load Transfer Capacity for Distribution Network with Microgrid

Load transfer is one of effective measures to guarantee the security of power supply under distribution network fault or N-1 maintenance. Feasibility analysis of the load transfer scheme obtained by experience is a critical issue, and reliability evaluation is one of very important aspects. As to micro-grid operation modes, operating characteristics and their influences on distribution system, reliability evaluation indices system of load transfer capacity for distribution network with micro-grid is proposed in this paper. According to operation mode of micro-grid, the distribution network with micro-grid is composed of such two parts as grid-connected and islanded micro-grid. As to the influence of quantitative operation mode of micro-grid on reliability evaluation indices, the comprehensive evaluation of load transfer capacity of distributed network is carried out from the aspect of reliability by using the entropy weight FAHP. In the end, the effectiveness and feasibility of the evaluation indices system proposed in the paper are verified through reliability evaluation on different load transfer schemes of modified IEEE33 node system.