于明;王毅;李永刚;

• 1:新能源电力系统国家重点实验室(华北电力大学)

摘要(Abstract)：

为增强直流微网扰动抑制能力,使直流侧电压在系统扰动时呈现惯性响应特性,提出了一种基于变流器预测控制的直流微网混合储能系统虚拟惯性控制策略。该方法采用微网储能系统变流器作为虚拟惯性控制单元,增加直流电压变化作为控制输入变量,增强了其暂态运行稳定性。此外,为提高直流微网本地控制速度,以配合储能系统的快速惯性调节,避免因控制延时造成的滞后控制现象,提出了基于模型预测方法的储能变流器本地控制方法,并采用由蓄电池和超级电容组成的混合储能系统,以弥补蓄电池充放电速率较慢的缺点。基于Matlab建立了风电直流微网系统仿真模型,仿真结果验证了所提策略的有效性。

关键词(KeyWords)： 直流微网;虚拟惯性;模型预测控制;混合储能

Abstract:

Keywords:

基金项目(Foundation): 国家863高技术基金项目(2015AA050101)~~

作者(Author): 于明;王毅;李永刚;

Email:

DOI: 10.13335/j.1000-3673.pst.2016.1947

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