含大规模新能源接入的送端电网频率响应时空分布特性分析  

Analysis on the Spatiotemporal Distribution Characteristics of the Frequency Response in Large⁃scale New Energy Access Sending⁃end Power Grid

作　　者：马遵 陈灏颖 邓灿 陈勇 管霖[2] MA Zun;CHEN Haoying;DENG Can;CHEN Yong;GUAN Lin(Electric Power Research Institute of Yunnan Power Grid Co.,Ltd.,Kunming 650217,Yunnan,China;School of Electric Power,South China University of Technology,Guangzhou 510641,Guangdong,China)

机构地区：[1]云南电网有限责任公司电力科学研究院,云南昆明650217 [2]华南理工大学电力学院,广东广州510641

出　　处：《电气传动》2025年第4期56-65,共10页Electric Drive

基　　金：国家自然科学基金(52077080);云南电网有限责任公司科技项目(056200KK52220044)。

摘　　要：现代电力系统跨度广、惯量低、结构复杂的发展态势致使频率稳定问题日益突出,频率时空分布差异特性明显。以实际送端电网为对象,研究大规模新能源接入和直流功率控制对电网受扰频率响应及频率时空分布特性的影响。首先,基于详细时域仿真模型,从受扰功率、惯量与调频资源的分布差异的角度探讨了节点频率时空分布的成因,提出了反映电网频率响应整体趋势和分布差异的系统级和节点级频率响应指标。然后,分析新能源出力占比、同步电源分布、新能源一次调频、直流频率限制控制等因素对送端电网受扰频率响应的影响机理。最后,通过真实送端电网案例的仿真结果量化分析了各类因素对电网频率响应及时空分布特征的影响程度。The development of modern power systems with wide span,low inertia,and complex structure makes the frequency stability problem increasingly prominent,and the spatial-temporal distribution characteristics of frequency are distinct.Taking the actual power grid as the object,the impacts of large-scale new energy access and DC power control on the grid frequency response under disturbances and the characteristics of frequency spatial-temporal distribution were analyzed.Firstly,based on the detailed time-domain simulation model,the causes of the spatial-temporal distribution of node frequency were discussed from the perspective of the distribution differences of disturbed power,inertia,and frequency regulation resources.The system-level and node-level frequency response indicators that reflect the overall trend and distribution differences of grid frequency response were proposed.Then,the impact mechanisms of factors such as the new energy power proportion,the distribution of synchronous,the primary frequency regulation of new energy,and DC frequency limit control on the grid frequency response under disturbances were analyzed.Finally,through simulation results of real power grid cases,the impact of various factors on the grid frequency response and its spatial-temporal distribution characteristics was quantitatively analyzed.

关 键 词：电力系统 暂态频率响应 时空分布 新能源接入 功率扰动 

分 类 号：TM743[电气工程—电力系统及自动化]