张桂红,刘飞,王世斌,李积泰

• 1:国网青海省电力公司经济技术研究院

摘要(Abstract)：

随着高渗透率新能源并网，同步发电机被逐渐替代，传统惯量支撑元件已经很难保证系统的频率稳定。为提高电力系统的频率稳定性，需要充分利用换流器高占比电力系统中的可控元件，提供虚拟惯量。首先，提出一种考虑系统动态频率响应特性的最小惯量估计方法，通过计算风电-储能并网系统的等值惯性时间常数，构建满足系统频率稳定性的惯量安全区间；然后，基于惯量安全区间，针对发生不同功率缺额时，系统频率稳定性与虚拟惯量之间的关系进行了机理阐释与量化分析；通过判断当前运行点是否位于安全区间内，可为频率稳定提供控制手段。最后，通过PSCAD/EMTDC仿真验证了所提方法的有效性和可行性。

关键词(KeyWords)： 安全区间;同步发电机;频率稳定;并网能力;虚拟惯量

Abstract:

Keywords:

基金项目(Foundation): 国网青海省电力公司科技项目（SGQHJY00GHJS2100130）

作者(Author): 张桂红,刘飞,王世斌,李积泰

DOI: 10.19635/j.cnki.csu-epsa.000974

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