| 引用本文: | 文云峰,杨伟峰,林晓煌.低惯量电力系统频率稳定分析与控制研究综述及展望[J].电力自动化设备,2020,40(9): |
| WEN Yunfeng,YANG Weifeng,LIN Xiaohuang.Review and prospect of frequency stability analysis and control of low-inertia power systems[J].Electric Power Automation Equipment,2020,40(9): |
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| 摘要: |
| 大容量直流和高比例新能源接入下，越来越多的电力系统正逐渐演变为低惯量电力系统。低惯量电力系统惯量支撑力度弱、出力不确定性强、频率调节能力和阻尼特性差，致使频率稳定问题日益凸显。为更好地理解电力系统在低惯量运行场景下的频率稳定威胁以及为有效制定应对策略提供参考，对低惯量电力系统频率稳定分析与控制领域的国内外研究进展进行综述与展望。首先，分析低惯量运行场景产生的主要原因及其对频率稳定的潜在影响，并介绍近年来实际电网频率问题的典型案例。进而，对基于时域仿真、数学解析、数据驱动的各类频率稳定分析方法进行阐述。从“源、网、荷、储”多类型有功资源调频能力挖掘、多道防线加强与协调配合等角度给出改善低惯量电力系统频率稳定的控制措施。最后，展望了该领域未来需深入探索的研究方向。 |
| 关键词: 低惯量电力系统 惯性 频率稳定 频率控制 稳定性 新能源 高压直流输电 |
| DOI：10.16081/j.epae.202009043 |
| 分类号:TM712 |
| 基金项目:国家自然科学基金资助项目(51707017)；湖南省自然科学优秀青年基金资助项目(2020JJ3011)；湖湘青年科技创新人才项目 |
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| Review and prospect of frequency stability analysis and control of low-inertia power systems |
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WEN Yunfeng, YANG Weifeng, LIN Xiaohuang
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College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
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| Abstract: |
| With the infeed of large capacity HVDC and high proportion of renewable generation, more and more power systems are gradually evolving into low-inertia power systems. Low-inertia power systems usually have weak inertial support, strong uncertainty of generation, poor frequency regulation and damping capability, which results in frequency stability issues increasing. In order to better understand potential frequency stability risks in low-inertia operating scenarios and provide references for effective countermeasures, the re-search progress of frequency stability analysis and control of low-inertia power systems at home and abroad is reviewed and prospected. Firstly, the main causes of low-inertia operating scenarios and corresponding impacts on system frequency stability are analyzed, and the typical frequency problems occurred in practical systems in recent years are introduced. Furthermore, various frequency stability analysis methods based on time-domain simulation, analytical analysis and data-driven algorithms are explained. The control measures to improve the frequency stability of a low-inertia power system are discussed from the perspectives of frequency modulation ability mining using multi-type active power resources such as source, network, load and storage, multiple security defense lines strengthening and coordination. Finally, the future research directions in this field are prospected. |
| Key words: low-inertia power systems inertia frequency stability frequency control stability renewable energy HVDC power transmission |
