计及风电-负荷不确定性的风-火-核-碳捕集多源协调优化调度

A Multi-Source Coordinated Optimal Scheduling Model Considering Wind-Load Uncertainty

随着核电技术的飞速发展,大容量核电机组接入电网是实现电力低碳环保的必然趋势,而负荷峰谷差的增大和间歇式电源渗透率的提高,迫切需要核电机组以灵活运行方式分担电网调峰压力。首先,基于核电机组实际运行特点,线性化核电调峰深度;然后,分析综合灵活运行方式碳捕集电厂的“削峰填谷”特性,实现核电-碳捕集机组捆绑调峰;接着,引入模糊参数表征风电和负荷的不确定性,在计及核电调峰安全性和经济性的前提下,以各类机组联合总运行成本最低为目标函数,建立考虑风电消纳效益的风、火、核、碳捕集多源协调模糊优化调度模型;最后,通过仿真算例验证所提模型和方法的有效性。结果表明,该优化调度模型在保证核电安全运行的基础上,提高了电网调度柔性,实现了运行的经济性和低碳性。

With the rapid development of nuclear power technology,it is an inevitable trend for large capacity nuclear power units to be connected to the power grid to achieve low carbon and environmental protection.However,with the increase of load peak-valley difference and the increase of intermittent power supply permeability,it is urgent for nuclear power units to share the peak pressure of the power grid in a flexible operation mode.Based on the actual operation characteristics of nuclear power units,the peak regulation depth of nuclear power units was linearized.The characteristics of peak shaving and valley filling of carbon capture power plants with integrated flexible operation mode were analyzed to realize binding peak regulation of nuclear-carbon capture units.Then,fuzzy parameters were introduced to characterize the uncertainty of wind power and load.On the premise of considering the safety and economy of nuclear power peak regulation,a multi-source coordinated fuzzy optimal scheduling model considering the benefit of wind power consumption was established by minimizing the total cost of joint operation as the objective function.The simulation example verifies the validity of the proposed model and method.The results show that the optimal dispatching model can improve the flexibility of power network dispatching and realize the economic and low-carbon operation on the basis of ensuring the safe operation of nuclear power.