Research on Adequacy Evaluation of New Energy Grid Connected System Considering Meteorological Conditions

With the development of new energy, the randomness and volatility of new energy aggravate the uncertainty of new power system operation, and the problem of sufficiency of power system becomes increasingly prominent. It is of great significance to evaluate the sufficiency of power system. This paper mainly studies the adequacy evaluation of new energy grid-connected system considering meteorological conditions. Firstly, through the investigation of the frequency and intensity of typhoons, combined with the combined scene-Dutch scene set under conventional conditions, the annual combined scene-Dutch scene set considering typhoon weather is finally generated. Then, based on the probabilistic distance, the fast previous generation elimination technique is used to reduce the scene set and calculate the probability of the corresponding scene. Finally, the element outage rate model considering typhoon weather conditions is used. The probability of power shortage, the average duration of load reduction, and the expectation of power shortage were used to evaluate the sufficiency. Finally, this model is used to evaluate the adequacy of Shanghai power grid in 2025, 2030 and 2050. The feasibility of the model is verified.