• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

电力建设 ›› 2016, Vol. 37 ›› Issue (2): 25-33.doi: 10.3969/j.issn.1000-7229.2016.02.004

• 电力系统故障诊断栏 ·目主持 文福拴教授· • 上一篇    下一篇

利用有限相量测量单元的故障识别与广域后备保护策略

徐兵1,张岩1,田方媛1,文福拴1,2,朱炳铨3,徐立中3   

  1. 1.浙江大学电气工程学院,杭州市310027;2.文莱科技大学电机与电子工程系,文莱斯里巴加湾 BE1410;3.国网浙江省电力公司,杭州市 310007
  • 出版日期:2016-02-01
  • 作者简介:徐兵(1992),男,硕士研究生,从事电力系统故障诊断和系统恢复方面的研究工作; 张岩(1990),男,博士研究生,从事电力系统故障诊断和系统恢复方面的研究工作; 田方媛(1992),女,硕士研究生,主要从事电力系统故障诊断和系统恢复方面的研究工作; 文福拴(1965),男,教授,博士生导师,本文通信作者,主要从事电力系统故障诊断与系统恢复、电力经济与电力市场、智能电网与电动汽车等方面的研究工作; 朱炳铨(1967),男,高级工程师,主要从事电网调度运行管理工作; 徐立中 (1983),男,博士,工程师,主要从事电力系统调度运行控制工作。
  • 基金资助:

    国家高技术研究发展计划项目(863计划)(2015AA050202);高等学校博士学科点专项科研基金资助项目(20120101110112);国网浙江省电力公司科研项目(5211ZD13000R);国家电网公司科技项目(52110115009Q)

Fault Identification and Wide-Area Backup Protection Strategy Based on Limited Phasor Measurement Units

XU Bing1,ZHANG Yan1,TIAN Fangyuan1,WEN Fushuan1,2,ZHU Bingquan3,XU Lizhong3   

  1. 1. School of Electrical Engineering, Zhejiang University, Hangzhou 310027, China;2. Department of Electrical and Electronic Engineering, Institut Teknologi Brunei, Bandar Seri Begawan BE1410, Brunei;3. State Grid Zhejiang Electric Power Corporation, Hangzhou 310007, China
  • Online:2016-02-01
  • Supported by:

    Project supported by National High Technology Research and Development Program (863 Program) (2015AA050202);Specialized Research Fund for the Doctoral Program of Higher Education (20120101110112)

摘要:

针对传统后备保护整定困难、动作延时长、配合关系复杂等问题,提出了一种利用有限相量测量单元的故障识别与广域后备保护策略。首先,根据相量测量单元的安装位置划分后备保护区域;在发生故障时,利用电气量信息确定故障设备所在的后备保护区域,以期快速缩小可疑故障设备范围。其次,提出一种基于解析模型的故障识别方法和广域后备保护策略。当主保护未能成功切除故障时,这种解析模型可综合利用主保护动作警报、断路器动作警报、后备保护启动信息和功率方向继电器指向信息,利用禁忌算法(tabu search,TS)求解最优故障假说,并通过解析保护和断路器的动作逻辑判断拒动装置。之后,根据不同的拒动情况提出相应的后备保护策略以防止故障扩大。最后,以IEEE 39节点系统为例,对所提出的方法做了验证。仿真结果表明,所提出的方法是可行的,具有较强的容错能力。

关键词: 故障诊断, 后备保护策略, 相量测量单元(PMU), 后备保护区域(BPZ), 解析模型

Abstract:

 The traditional backup protection has some drawbacks, including difficult protection setting, long time delay and complicated coordination. Given this background, this paper proposes a fault identification and wide-area backup protection strategy based on limited phasor measurement units (PMUs). Firstly, the whole power network is divided into several backup protection zones (BPZs) based on the placement of PMUs. Once a fault occurs, the electrical quantities are utilized to identify the faulted BPZ, so as to quickly narrow down the scope of suspected fault sections. Then, we present fault identification method and wide-area backup protection strategy based on the analytical model. When the main protection fails to clear the fault, this analytical model can comprehensively use the alarm information of main protection, circuit breaker action alarm, backup protection startup information and power direction relays to point to the information, adopt tabu search (TS) algorithm to seek the optimal fault hypothesis, and determine the malfunction devices through analyzing the action logics of protection and circuit breaker. Based on the identified malfunctions, the corresponding backup protection strategy is initiated to prevent the fault from spreading. The simulation results show that the proposed method is feasible and has strong fault tolerance ability.

Key words: fault diagnosis, backup protection strategy, phasor measurement unit (PMU), backup protection zone (BPZ), analytical model

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