基于受扰轨迹模式分析的动态稳定辅助决策
基于状态估计结果通过数值仿真获取预想故障集下的系统受扰轨迹，再应用Prony算法从受扰轨迹中提取反映系统动态稳定特性的主导模式，根据主导模式的阻尼判断系统的动态稳定性。在模式频率相同的多个故障中选取模式阻尼最小的故障作为关键故障控制。根据机组分群及其参与因子通过功率摄动法判断机组调整方向，并协调不同弱阻尼模式下的机组调整方向。采用并行计算策略计算单个模式的机组调整措施，再合并各模式的控制措施，并进行校核，最后给出协调控制多个弱阻尼模式的机组出力调整措施。通过对华北电网的案例分析验证了该方法的有效性和实用性。...
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| Published in | 电力系统保护与控制 Vol. 41; no. 4; pp. 79 - 83 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
国网电力科学研究院,江苏 南京 210003%华北电力大学电气与电子工程学院,北京 102206
2013
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| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-3415 |
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| Summary: | 基于状态估计结果通过数值仿真获取预想故障集下的系统受扰轨迹，再应用Prony算法从受扰轨迹中提取反映系统动态稳定特性的主导模式，根据主导模式的阻尼判断系统的动态稳定性。在模式频率相同的多个故障中选取模式阻尼最小的故障作为关键故障控制。根据机组分群及其参与因子通过功率摄动法判断机组调整方向，并协调不同弱阻尼模式下的机组调整方向。采用并行计算策略计算单个模式的机组调整措施，再合并各模式的控制措施，并进行校核，最后给出协调控制多个弱阻尼模式的机组出力调整措施。通过对华北电网的案例分析验证了该方法的有效性和实用性。 |
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| Bibliography: | ZHENG Wei, BAO Yan-hong, PENG Hui-min, XU Wei, XU Tai-shan, MA Ming （1. State Grid Electric Power Research Institute, Nanjing 210003, China; 2. School of Electrical ＆ Electronic Engineering, North China Electric Power University, Beijing 102206, China） dynamic stability; auxiliary decision-making; disturbed trajectory; dominant mode; participation factor 41-1401/TM According to state estimation results, the system disturbed trajectory in expected fault set is obtained by numerical simulation. Prony method is used to extract the dominant mode reflecting the system dynamic stability characteristics from the disturbed trajectory. The damping of the dominant mode is referenced to judge the system dynamic stability. If system dominant modes of multiple faults have the same frequency, the fault with the smallest system damping is selected as the critical fault for controlling. The direction of generation adjusting is judged by power perturbation method based on the unit clusters and participation factors, and the dire |
| ISSN: | 1674-3415 |