Transmission line fault location utilizing sparse measurements

本研究的目的是调查可能的故障定位方法，输电线路利用稀疏的电压和电流测量的总线和分支，可能是远离故障线路。该方法是基于母线阻抗矩阵技术，推导出作为未知故障位置的解析函数的测量量，然后求解故障定位方程。本研究具有以下智力价值：它将探索合适的输电线路故障定位的估计理论，旨在为电力系统监测，保护和故障分析领域做出基础性贡献。本研究将探讨单回线和双回线的算法，采用稀疏的电压和电流相量或幅度单独。将充分利用相量测量单元的同步相量。所开发的方法有可能被用于在线保护的目的，这可能会显着提高距离保护的准确性利用只有本地data.This研究将有更广泛的影响在几个领域：第一，所开发的方法可以大大提高电力系统的可靠性，减少与停电相关的成本，并提高社会福利。二是将研究成果运用于课堂，丰富课程内容。代表性不足的学生，特别是妇女，非洲裔美国人和那些来自阿巴拉契亚的学生将被鼓励和招募参加该项目。第三，研究成果将通过技术出版物和专题介绍迅速广泛传播。

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.