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<p>Determining fault location (FL) on overhead power lines (OL) continues to remain an important and relevant issue in the electric power industry. The continuous advancement of technology and equipment inspires researchers working in this field to develop new methods and tools for determining FL. An increasing number of recently completed studies consider the technology of synchronized phasor measurements (SPM) as a tool for addressing the OLFL problem. The implementation of existing FL methods based on emergency mode parameters (EMP) using SPM has its own specifics. One of the most critical ones is the selection of the optimal SPM data frame to ensure the required FL accuracy. This study is dedicated to the development and testing of an algorithm for selecting the SPM data frame, which could be used further when implementing a number of existing EMP-based FL expressions. The developed algorithm is intended for use in situations, where no emergency oscillograms or any information about the type of filter of the synchronized phasor measurement unit (PMU) are available, i.e., at the level of synchronized phasor data concentrators. In addition to using a model to test the algorithm, its performance is also evaluated by using actual short circuit (SC) oscillograms recorded by the event recorders installed on 500 kV OLs of the Unified Energy System of Russia. In the overwhelming majority of cases, the developed algorithm selects an SPM data frame that provides the accuracy of the considered FL expressions as defined by the relevant industry standards.</p>

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Determining Fault Location Based on Synchronized Phasor Measurements with Automatic Selection of Optimal Data Frame

  • 期刊论文

  • 发表日期：

    2025年1月1日

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  • Ya. A. Umnov,
  • I. E. Ivanov,
  • A. A. Yablokov

摘要

Determining fault location (FL) on overhead power lines (OL) continues to remain an important and relevant issue in the electric power industry. The continuous advancement of technology and equipment inspires researchers working in this field to develop new methods and tools for determining FL. An increasing number of recently completed studies consider the technology of synchronized phasor measurements (SPM) as a tool for addressing the OLFL problem. The implementation of existing FL methods based on emergency mode parameters (EMP) using SPM has its own specifics. One of the most critical ones is the selection of the optimal SPM data frame to ensure the required FL accuracy. This study is dedicated to the development and testing of an algorithm for selecting the SPM data frame, which could be used further when implementing a number of existing EMP-based FL expressions. The developed algorithm is intended for use in situations, where no emergency oscillograms or any information about the type of filter of the synchronized phasor measurement unit (PMU) are available, i.e., at the level of synchronized phasor data concentrators. In addition to using a model to test the algorithm, its performance is also evaluated by using actual short circuit (SC) oscillograms recorded by the event recorders installed on 500 kV OLs of the Unified Energy System of Russia. In the overwhelming majority of cases, the developed algorithm selects an SPM data frame that provides the accuracy of the considered FL expressions as defined by the relevant industry standards.