在低惯性电力系统中评估频率稳定性的新指数
Sishi Qin1, Sim Sy Yi2, Chao Zhang1
1School of Power Engineering, Guangxi Electrical Polytechnic Institute, Nanning, China.
PloS one
|January 7, 2026
概括
为低惯性动力系统引入了一个新的频率稳定率 (FSM) 指数. 该指数有助于分析和确保网络的稳定运行,并增加可再生能源的整合.
科学领域:
- 电气工程 电气工程
- 电力系统分析 分析 分析
- 整合可再生能源的整合
背景情况:
- 传统的同步发电机正在被电网形成转换器 (GFM) 和电网遵循转换器 (GFL) 取代.
- 这种转变显著改变了系统惯性特征,对传统的稳定性分析方法提出了挑战.
- 低惯性电力系统需要新的方法来评估和保持频率稳定性.
研究的目的:
- 提出一种新的电网指数,即频率稳定率 (FSM),用于评估低惯性电力系统的频率稳定性.
- 定义,量化和证明FSM的实际应用.
- 为优化新能源发电厂规划和电网运行战略提供理论框架.
主要方法:
- 开发了FSM的数学基础和操作定义.
- 研究了影响FSM的因素,并为低惯性系统创建了一个全面的数学模型.
- 建立了使用聚合系统建模的FSM计算方法,并推导出了一种简化估计方法.
主要成果:
- 通过使用中国省级电网数据和经过修改的IEEE 39巴士系统的案例研究,验证了FSM的有效性.
- 证明了FSM在分析低惯性电网中的频率稳定性的能力.
- 建立了改善新能源发电厂规划和运营的理论基础.
结论:
- 拟议的FSM为低惯性电力系统的安全和稳定运行提供了必要的指导.
- FSM框架支持优化新能源发电厂的规划和开发.
- 这一指数对于在不断发展的电力系统中制定有效的电网运行控制策略至关重要.
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