基于影响因子聚类拟合的电化学储能能耗分析法

Energy Consumption Analysis Method for Electrochemical Energy Storage Power Stations Based on Clustering Fitting of Influencing Factors

针对电化学储能单元能耗影响因子繁多且相互干扰的问题,本文提出了一种基于影响因子聚类拟合的电化学储能能耗分析法,实现对储能单元能耗的分析。首先,定性分析储能单元中电化学电池、储能变流器PCS变流器、变压器的能耗核心影响因子,并将其聚合为负荷率、电阻和流经电流变量;随后,将聚合的统一变量进行函数拟合,定量分析储能单元中各模块的能耗特性。利用实际电化学储能电站的能耗参数进行拟合验证,计算结果表明,本文构建的电化学储能单元的能耗模型其拟合优度和残差均接近理想值,具有较好的能耗计算精度。

Aiming at the problem that the energy consumption impact factors of electrochemical energy storage unit are numerous and interfere with each other,this paper proposes an energy consumption analysis method of electrochemical energy storage based on the clustering fitting of impact factors,which realizes the analysis of the overall energy consumption of the energy storage unit.Firstly,the core energy consumption impact factors of the electrochemical battery,PCS converter,transformer and auxiliary system in the energy storage unit are qualitative analyzed,and they are aggregated into unified variables such as load rate,resistance and flowing current.Then,the aggregated unified variables are subjected to function fitting to quantitatively analyze the energy consumption characteristics of each module of the energy storage unit.The energy consumption parameters of the actual electrochemical energy storage unit are used for fitting verification.The calculation results show that the goodness of fit and residual of the energy consumption model of the electrochemical energy storage unit constructed in this paper are close to the ideal value,and have good calculation accuracy of energy consumption.