基于广域行波信息的行波保护

发布时间：2018-05-29 12:19

本文选题：行波保护 + 广域行波信息　；参考：《中国电机工程学报》2014年34期

【摘要】：广域行波保护可以解决现有行波保护存在的判据信息来源单一和可靠性低等难题,但存在配置节点多、经济性差等问题。为此,论文提出了一种基于广域初始行波极性与时间信息的新型行波保护方法,该方法利用广域行波信息实现区域电网中的所有线路保护。电网故障时,利用故障初始行波极性信息界定行波故障域,然后融合故障域中的初始行波时间信息判定故障线路;电网拓扑结构发生变化时,仅需在原保护域的基础上进行局部修改,便可提高广域行波保护的自适应能力。仿真结果表明,该广域行波保护方法简便易行,可在配置有限数量行波检测单元的情况下,准确判别故障支路,有助于促进行波保护的工程应用。
[Abstract]:Wide-area traveling wave protection can solve the problems of single source of criterion information and low reliability of existing traveling wave protection, but there are many configuration nodes and poor economy. In this paper, a novel traveling wave protection method based on the polarity and time information of the wide-area initial traveling wave is proposed. The method uses the wide-area traveling wave information to realize the protection of all lines in the regional power network. In the fault of power network, the initial traveling wave polarity information is used to define the traveling wave fault region, and then the initial traveling wave time information is fused in the fault domain to determine the fault line. The adaptive ability of wide area traveling wave protection can be improved only by local modification on the basis of the original protection domain. The simulation results show that this method is simple and easy to use, and it can accurately identify fault branches when a limited number of traveling-wave detection units are allocated, which is helpful to promote the engineering application of traveling-wave protection.
【作者单位】：智能电网运行与控制湖南省重点实验室(长沙理工大学);
【基金】：国家自然科学基金项目(51377012,51207013) 湖南省科技重大专项(2012FJ1003) 湖南省自然科学基金项目(12JJ3046) 湖南省高校产业化培育项目(13CY008) 可再生能源电力技术湖南省重点实验室开放基金项目(2012ZNDL001)资助~~
【分类号】：TM773

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