储能系统应用于火电厂调频经济性评价的研究

电池储能系统具有快速、精确的功率响应能力,有利于电厂更好地跟踪自动发电控制指令,更高效地完成电网自动发电控制目标。由于储能系统的建设成本比较昂贵,因此建立有效的储能电池经济性评估方法具有重要意义。首先提出了辅助火电机组参与调频的控制策略和分段调频的控制策略;然后利用灰色模型算法建立了电池容量的衰减模型,得出了对储能系统健康度的预测方法;最后基于两种控制策略,完成了对储能系统参与调频的经济性评价和比较。

Study on Application of Energy Storage System to Economic Evaluation of Power Plant Frequency Regulation

The battery energy storage system has a fast and accurate power response capability and is beneficial for the power plant to better track the automatic generation control (AGC) command and complete the grid AGC control target more efficiently.Since the construction cost of the energy storage system is relatively high,it is of great significance to establish an effective method for economic evaluation of energy storage batteries.A control strategy for auxiliary thermal power units to participate in frequency modulation and a control strategy for subsection frequency modulation are proposed.Then a gray model algorithm is used to establish the attenuation model for battery capacity,and a prediction method for the health of energy storage systems is derived.Finally,two control methods are used.The strategy completed the research on the economic evaluation of energy storage system participation in FM.