Reliability evaluation of electrical collector system of wind farm based on sequential Monte Carlo

In order to study the influence of electrical collector system of wind farm from the perspective of four typical topological structures of electrical collector system of wind farm, sequential Monte Carlo model is established for reliability evaluation of electrical collector system of wind farm with consideration of multiple faults of wind turbine generator (WTG) and collection circuit in wind farms. The influence of cable fault on outage of WTG as well as separating and switching operations of the switch is studied. A comparison of four typical topological structures in probability distribution of number of WTGs under effective operation, total outage probability of WTGs, annual energy output of wind farm and other reliability indexes is conducted through actual calculating-examples analysis. Sensitivity analysis of collection circuit fault rate is then implemented. Calculating-example results verifies the correctness and applicability of the model proposed in this paper.