计及新能源和直流频率限制控制器的最小惯量需求评估方法OA
Method for Evaluating Minimum Inertia Requirements Considering New Energy and DC Frequency Limit Controllers
为准确评估系统最小惯量需求以保障高比例新能源异步送端电力系统的频率稳定性,针对计及新能源和直流频率限制控制器的最小惯量需求评估问题,提出一种考虑频率变化率和最大频率偏差约束的最小惯量评估方法.对于频率变化率约束,考虑新能源支撑和直流频率限制控制器快速调频作用对惯量评估的影响;对于最大频率偏差约束,建立改进系统频率响应模型并推出频率响应的时域表达式.进一步,综合考虑2种约束条件,建立最小惯量评估模型,实现对系统最小惯量需求评估.最后,分析新能源渗透率和直流频率限制控制器对频率稳定的影响,在改进的IEEE4机11节点系统中设置不同约束条件和扰动大小,通过仿真揭示系统惯量水平的变化规律,验证所提方法的准确性,为评估系统惯量水平提供可行措施.
To accurately assess the minimum inertia requirements for frequency stability of sending-end asynchronous system with high renewable penetration,a method considering frequency change rate and maximum frequency deviation constraints is proposed for inertia evaluation involving renewables and DC Frequency Limit Controller(FLC).For the former constraint,renewable support and DC FLC's fast frequency regulation impacts are incorporated.For the latter constraint,an improved system frequency response model is established with derived time-domain expression,and a comprehensive minimum inertia evaluation model is further constructed.Finally,effects of renewable penetration and DC FLC on frequency stability are analyzed,and simulations under different constraints and disturbances on the im⁃proved IEEE4-machine 11-bus system reveal inertia variation patterns,verifying the method's accuracy and providing practical inertia assessment measures.
代瑞;郭成;张轩
昆明理工大学电力工程学院,昆明650500昆明理工大学电力工程学院,昆明650500昆明理工大学电力工程学院,昆明650500
信息技术与安全科学
最小惯量高比例新能源直流频率限制控制器频率稳定
minimum inertiahigh proportion of new energyDC frequency limit controller(FLC)frequency stability
《电力系统及其自动化学报》 2026 (9)
112-122,11
国家自然科学基金资助项目(52367002)云南省自然科学基金资助项目(202201BE070001-15).
评论