Transmission line fault location utilizing sparse measurements

利用稀疏测量进行输电线路故障定位

• 批准号: 0801367
• 负责人: Yuan Liao
• 金额: $ 24.8万
• 依托单位: University of Kentucky Research Foundation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2008
• 资助国家: 美国
• 起止时间: 2008-08-01 至 2011-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0801367&HistoricalAwards=false
• 关键词: Transmission; line; fault; location; utilizing

The objective of this research is to investigate possible fault location approaches for transmission lines utilizing sparse voltage and current measurements from buses and branches that may be distant from the faulted line. The approach is to derive the measured quantity as an analytical function of the unknown fault location based on the bus-impedance matrix technique, and then to solve the equation for the fault location. This research has the following intellectual merits: It will explore appropriate estimation theories for transmission line fault location, aiming at making fundamental contributions to the areas of power system monitoring, protection and fault analysis. The research will investigate algorithms for both single-circuit and double-circuit lines by employing sparse voltage and current phasors or magnitudes alone. Synchronized phasors from phasor measurement units will be fully exploited. The developed method has the potential to be utilized for online protection purposes, and this could significantly improve distance protection accuracy harnessing only local data.This research will have broader impacts in several areas: First, the developed approach can greatly improve the reliability of the power system, reducing the costs associated with the outage, and enhancing the welfare of the society. Second, the research results will be utilized in the classroom to enrich the curriculum. The underrepresented students, especially women, African Americans and those from Appalachia will be encouraged and recruited to work on the project. Third, the research results will be promptly and broadly disseminated through technical publications and presentations.

这项研究的目的是研究可能的输电线路故障定位方法，利用来自可能远离故障线路的母线和支路的稀疏电压和电流测量。该方法是基于母线阻抗矩阵技术，将测量量作为未知故障测距的解析函数，进而求解故障测距方程。本研究具有以下学术价值：将探索合适的输电线路故障测距理论，旨在为电力系统监测、保护和故障分析等领域做出基础性贡献。这项研究将通过单独使用稀疏电压和电流相量或幅值来研究单回路和双回路线路的算法。来自相量测量单元的同步相量将得到充分利用。这项研究将在几个方面产生更广泛的影响：首先，所开发的方法可以极大地提高电力系统的可靠性，降低与停电相关的成本，并提高社会福利。第二，将研究成果用于课堂，丰富课程内容。代表人数不足的学生，特别是女性、非裔美国人和来自阿巴拉契亚的学生，将受到鼓励并被招募参与该项目。第三，研究成果将通过技术出版物和专题介绍迅速和广泛地传播。