| 基于混合方法的电力系统暂态稳定性分析 |
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| 引用本文： | 汪芳宗,何仰赞,陈德树.基于混合方法的电力系统暂态稳定性分析[J].电力系统及其自动化学报,1991(1). |
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| 作者姓名： | 汪芳宗 何仰赞 陈德树 |
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| 作者单位： | 华中理工大学电力工程系
(汪芳宗，何仰赞)，华中理工大学电力工程系(陈德树) |
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| 摘 要： | 本文将数值仿真方法和暂态能量函数法相结合,提出了一种分析出力系统暂态稳定性的混合求解方法。该方法首先通过数值积分计算出系统的运行轨迹,然后利用暂态能量函数法判别出系统的稳定性。 为了避免不必要的、费时的数值积分计算,本文提出了一种仿真计算终止判据。另外,本文提出了一种曲线拟合技术,不仅可以快速地求解出系统在稳定情况下的稳定裕度,而且还可以估计出系统的极限切除时间等。 这种混合方法结合了数值仿真方法和暂态能量函数法两者的优点,为在线暂稳分析和控制提供了一个有力工具。
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| 关 键 词： | 电力系统稳定 暂态稳定 |
POWER SYSTEM TRANSIENT STABILITY ANALYSIS BY HYBRID METHOD |
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| Wang Fangzong,He Yangzan,Chen Deshu Huazhong University of Science and Technology.POWER SYSTEM TRANSIENT STABILITY ANALYSIS BY HYBRID METHOD[J].Proceedings of the CSU-EPSA,1991(1). |
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| Authors: | Wang Fangzong He Yangzan Chen Deshu Huazhong University of Science and Technology |
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| Affiliation: | Wang Fangzong;He Yangzan;Chen Deshu Huazhong University of Science and Technology |
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| Abstract: | This paper presents the hybrid method of power system transient stability analysis, which combines
the desirables features of both the time domain numerical simulation method and the transient energy
function method. The hybrid method first computes the actual system trajectory by numerical
integration, then evaluates the transient energy in order to derive the stability margin or the the insiability
index of system.
Furthermore, a proper criterion is proposed to control the simulation process, and a trajectory ap-
proximation technique is used to estimate the critical clearing time(CCT) in this paper.
Extensive tests in practical power system show it to be a potential tool for on--linc transient stability
analysis. |
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| Keywords: | Power system stability fransient stability |
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