重合闸时刻对动态安全域的影响及最优重合时刻实用算法

doi:10.19595/j.cnki.1000-6753.tces.170012

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摘要自动重合闸对提高电力系统稳定性和供电可靠性具有重要意义。对发生短路后重合闸时刻对动态安全域（DSR）的影响进行研究。通过仿真,发现了重合闸时刻变化时DSR边界的近似平行特性和DSR边界测度曲线的极限性、平滑性、饱和性等经验规律,并验证了重合闸最优时间窗口的普遍性,在窗口内整定重合闸时刻可显著提高输电线路暂态稳定约束下的功率传输极限。据此提出一种计算最优重合闸时刻的快速实用方法。新英格兰10机39节点系统的仿真证明了理论的正确性和方法的有效性。该研究成果拓展了动态安全域理论的适用范围。

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	刘怀东
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关键词 ：动态安全域, 最优重合闸, 功率传输极限, 稳定裕度, 暂态稳定性

Abstract：Automatic reclosing has great significance for improving stability and reliability of power systems. In this paper, the impacts of reclosing time after short-circuits on the dynamic security region (DSR) are studied. Through a lot of simulations, several experiential laws are found when the reclosing time changes, such as parallelism among DSR boundaries, the ultimate limit, smoothness and saturation of measure curve of DSR boundaries. In addition, the universality of the optimal reclosing time window is verified. Setting reclosing time within the window can significantly promote power transfer limit of transmission lines under transient stability constraints. A practical and fast calculation method of optimal reclosing time is presented. The simulation on the 10-generator, 39-bus New-England System verifies the correctness and effectiveness of the above conclusions. This research extends the application scope of DSR theory.

Key words： Dynamic security region (DSR) optimal reclosing power transfer limit stability margin transient stability

收稿日期: 2017-01-11 出版日期: 2018-04-24

PACS:

TM712

通讯作者: 王锦桥男,1992年生,硕士研究生,研究方向为电力系统安全性稳定性分析与控制。E-mail: jinqiaowang@tju.edu.cn

作者简介: 刘怀东男,1963年生,副教授,研究方向为电力系统安全稳定性以及电力市场等。E-mail: hdliu@tju.edu.cn

引用本文:

刘怀东, 王锦桥, 冯志强, 秦婷, 方伟. 重合闸时刻对动态安全域的影响及最优重合时刻实用算法[J]. 电工技术学报, 2018, 33(8): 1854-1862. Liu Huaidong, Wang Jinqiao, Feng Zhiqiang, Qin Ting, Fang Wei. Impacts of Reclosing Time on Dynamic Security Region and a Practical Algorithm for Optimal Reclosing Time. Transactions of China Electrotechnical Society, 2018, 33(8): 1854-1862.

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