电力系统主动解列的可行解列时窗研究

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摘要解列时刻是决定解列是否成功的关键因素.常规解列研究基于解列前的静态潮流信息,对动态过程中的稳定性问题利用强假设进行规避,忽略解列时刻的研究.本文首次对主动解列的解列时刻问题展开系统性分析,利用暂态能量函数量化解列动态过程中孤岛的稳定性,利用孤岛失稳的临界能量确定暂态稳定意义下的可行解列时窗,以保证解列后孤岛的暂态稳定性.研究表明,因扰动背景不同,孤岛的可行解列时窗呈现出:任何时刻均可解列,小于某个临界时刻,大于某个临界时刻,呈现断续的时窗特征以及可行解列时窗为空等五种不同的情况.本文首次从机理上解释和刻画主动解列的解列时刻特征,为进一步研究主动解列问题提供了新的思路和支撑.

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关键词 ：主动解列, 可行解列时窗, 稳定域, 暂态能量函数

Abstract：Controlled islanding is an active and effective way of avoiding catastrophic wide area blackout. The splitting time is the determining factor of successful islanding. However, it has not been well studied before since existing islanding methods are based on the system snapshots before disturbance occurrence and do not consider dynamic islanding process. This paper investigates the splitting time of controlled islanding systematically for the first time. Transient energy function is used to evaluate the stability of islands formed during the islanding process quantitatively. And the feasible splitting time interval is determined by the critical energy of islands to ensure the coherency and transient stability within created islands. Only when the splitting is undertaken within the feasible splitting time interval, the coherency within each island can be maintained and a successful islanding is possible.

Key words： Controlled islanding Feasible splitting time interval Stability region Transient energy function

收稿日期: 2014-07-10 出版日期: 2015-09-14

PACS:

TM712

基金资助:国家自然科学基金资助项目(51477093,51107071)

作者简介: 丁磊男,1980年生,博士,副教授,主要研究方向:电力系统广域保护控制和微电网保护控制. 郭一忱男,1990年生,硕士研究生,主要研究方向:电力系统主动解列.

引用本文:

丁磊,郭一忱,陈青. 电力系统主动解列的可行解列时窗研究[J]. 电工技术学报, 2015, 30(12): 415-421. Ding Lei,Guo Yichen,Chen Qing,Vladimir Terzija. Research on feasible splitting time interval of controlled islanding. Transactions of China Electrotechnical Society, 2015, 30(12): 415-421.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2015/V30/I12/415

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