考虑孤岛现象的储能系统奇次谐波频谱分析

为了实现对电力储能系统的协调控制能力,提出基于孤岛现象的储能系统奇次谐波频谱分析方法,构建多类型储能系统的奇次谐波检测模型,在孤岛现象作用下进行储能系统的低频成分抑制,将总储能中的低频成分指派给蓄电池,根据储能系统奇次谐波分量,进行超级电容器之间的功率分配,获取能量型储能系统奇次谐波频谱分量,采用波动平抑策略,在考虑孤岛现象作用下,基于模型预测控制算法进行储能系统奇次谐波频谱分析和特征提取,实现功率型超级电容器储能之间的功率优化分配。仿真结果表明,采用该方法进行储能系统奇次谐波频谱特征提取的准确性较好,提高了储能系统的协调控制能力,储能功率得到提升。

Spectrum analysis of odd harmonics in energy storage system considering isolated island phenomenon

In order to realize the coordinated control ability of the power energy storage system,the odd harmonic spectrum analysis method of the energy storage system based on the isolated island phenomenon is proposed,and the odd harmonic detection model of the multi-type energy storage system is constructed.The low frequency components of the energy storage system are suppressed under the action of the isolated island phenomenon,and the low frequency components of the total energy storage are assigned to the battery.According to the odd harmonic components of the energy storage system,the power distribution between the supercapacitors is carried out.The odd harmonic spectrum components of the energy storage system are obtained,and the wave suppression strategy is adopted to realize the optimal power allocation between the power storage supercapacitors by taking into account the isolated island phenomenon,the odd harmonic spectrum analysis and feature extraction of the energy storage system based on the model predictive control algorithm.The simulation results show that the method has good accuracy in extracting odd harmonic spectrum features of energy storage system,improves the coordinated control ability of energy storage system,and improves the energy storage power.