Reliability assessment method for electric distribution network with WTG (wind turbine generator)

The invention provides a reliability assessment method for an electric distribution network with a wind turbine generator (WTG), which takes the relativity of wind speed and load into consideration. The reliability assessment method comprises the step of collecting original data of the electric distribution network, constructing a WTG power output model, determining the scope of power supply capability of wind power, constructing normal distribution functions of wind speed and load, analyzing the timing sequence wind speed and load curves to obtain the average value and the standard deviation of two normal distribution functions, constructing a wind speed-load bivariate distribution function, sampling the wind speed and load sequence with the Monte Carlo method, calculating the scope of the WTG power output and the power supply corresponding to the sampled sequences, calculating reliability indexes with a partition method, and averaging all the calculated reliability indexes to finally obtain a reliability in