面向风电消纳与电熔镁高载能负荷调控的源荷协调优化策略

Source-Load Coordination Optimization Strategy for Wind Power Accommodation and High Energy Load Regulation of Electric Fused Magnesium

风电出力具有随机和波动性特点,其并网容量的增加导致火电机组调节压力不断加大,弃风问题日趋严重,电力系统调控难度攀升。为解决系统弃风问题,该文在火电机组参与调度的基础上,提出利用电熔镁高载能负荷的可调节特性,将其作为新的调节资源,与火电机组协同配合,消纳受阻风电。首先,分析电熔镁高载能负荷运行特性,建立电熔镁高载能负荷参与调度模型;其次,提出以风电消纳量最大和系统运行成本最小为目标的源荷协调双层优化模型;最后,采用优化软件CPLEX进行求解,仿真结果表明:电熔镁高载能负荷参与电网优化调度可有效减少弃风、降低系统运行成本。

Wind power output has the characteristics of randomness and volatility.With the increase of its grid connected capacity,the regulation pressure of thermal power units is increasing,wind curtailment problem is becoming more and more serious,and the difficulty of power system regulation is rising.In order to solve the problem of system wind abandonment,this paper proposed to take the high energy load of electric fused magnesium with adjustable characteristics as a new way of wind power consumption,which could participate in the optimal dispatching of power grid together with thermal power units,and formed a dispatching mode of source-load coordinated and optimal operation.Firstly,the high energy load operation model of fused magnesium was established;Secondly,a dual-level optimization model of source-load coordination was proposed to maximize wind power consumption and minimize system operation cost;Finally,the optimization software CPLEX was used to solve the problem.The simulation results show that the participation of fused magnesium high energy load in the optimal dispatching of power grid can effectively reduce the wind curtailment and the operation cost of the system.