电池储能技术在风电系统调峰优化中的应用

针对现有常规机组调峰容量难以满足系统调峰需求的问题,提出了一种基于电池储能的风电系统调峰优化模型。该模型通过对风电储能系统和常规火电机组的运行施加约束条件,使得电池储能系统的运行状况能够及时得到调整,从而实现电池储能参与风电系统调峰和优化调度的目标。通过实际算例对比了电池储能系统在参与风电系统调峰前后弃风现象、调峰容量和日负荷峰谷差的变化。仿真计算结果表明,该方法可以有效提高大规模风电并网后的系统调峰,使系统接纳更多的风电,避免弃风导致的资源浪费,提高了整个系统的经济性和稳定性。

Application of Battery Energy Storage Technology in Peak Regulation Optimization of Wind Power System

In order to solve the problem that the current conventional units’ peak regulation capacity is difficult to meet the demand of system, a wind power system peak regulation optimization model based on battery energy storage is proposed. By imposing constraints on the operation of the wind energy storage system and conventional thermal power units, the model enables the operation of the battery energy storage system to be adjusted in time, so as to realize the goal of battery energy storage participating in the peak regulation and optimal scheduling of the wind power system. A practical example is given to compare the change of wind curtailment, peak capacity and daily load peak and valley difference of battery energy storage system before and after participating in peak regulation of wind power system. The simulation results show that this method can effectively improve the system peak regulation after large-scale wind power is connected to the grid tomake the system accept more wind power, avoid the waste of resources caused by wind curtailment, and improve the economy and stability of the whole system.