| 引用本文: | 黄丹,孙华东,周勤勇,张健,姜懿郎,张一驰.基于响应轨迹最大李雅普诺夫指数动态特征的暂态稳定在线监测[J].电力自动化设备,2020,40(4): |
| HUANG Dan,SUN Huadong,ZHOU Qinyong,ZHANG Jian,JIANG Yilang,ZHANG Yichi.Online monitoring of transient stability based on largest Lyapunov exponent dynamic characteristics of response trajectory[J].Electric Power Automation Equipment,2020,40(4): |
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| 摘要: |
| 基于非线性动态系统最大李雅普诺夫指数(LLE)稳定性判别理论，研究无需系统模型的电力系统暂态功角稳定性在线监测方法。提出一种改进LLE估算法，并利用该方法分析发电机相对功角响应轨迹LLE的典型动态特征及关键特性，在此基础上提出基于响应轨迹LLE动态特征的暂态稳定性监测方法。针对实际中不完备的相量测量单元(PMU)配置问题，提出基于临界机组对的暂态稳定性在线监测方案，以节省计算成本并加快稳定性监测。IEEE 10机39节点系统仿真结果验证了所提方案的有效性。 |
| 关键词: 暂态稳定监测 最大李雅普诺夫指数 响应时间序列 临界机组对 广域信息 |
| DOI：10.16081/j.epae.202004002 |
| 分类号:TM712 |
| 基金项目:国家自然科学基金资助项目(51777195) |
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| Online monitoring of transient stability based on largest Lyapunov exponent dynamic characteristics of response trajectory |
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HUANG Dan, SUN Huadong, ZHOU Qinyong, ZHANG Jian, JIANG Yilang, ZHANG Yichi
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State Key Laboratory of Power Grid Safety and Energy Conservation, China Electric Power Research Institute, Beijing 100192, China
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| Abstract: |
| On the basis of stability criterion theory of LLE(Largest Lyapunov Exponent) in nonlinear dynamic system, the online monitoring method of system model-free transient rotor angle stability is researched. An improved LLE estimation method is proposed, which is adopted to analyze the dynamic characteristics and key features of LLE of the relative rotor angle response trajectory. On this basis, a transient stability monitoring method based on the LLE dynamic characteristics of response trajectory is proposed. Aiming at the practical problem of incomplete PMU(Phasor Measurement Unit) placement, an online transient stability monitoring scheme based on the critical generator pair is proposed to reduce the computational cost and speed up the stability monitoring. The simulative results of IEEE 10-generator 39-bus system verify the effectiveness of the proposed scheme. |
| Key words: transient stability monitoring largest Lyapunov exponent response time series critical generator pair wide-area information |
