BOLD ™: New Line Design Meets New Impedance Measurement Method

2018 IEEE/PES Transmission and Distribution Conference and Exposition (T&D) Pub Date : 2018-04-01 DOI:10.1109/TDC.2018.8440241

P.E. Richard Gutman, William Knapek

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Abstract

This paper describes impedance measurements conducted by American Electric Power (AEP) on a new 345 kV transmission project near Fort Wayne, Indiana, featuring an innovative high-capacity/high-efficiency compact line design trademarked BOLD™ (Breakthrough Overhead Line Design). Measurements were performed in cooperation with OMICRON Electronics Corporation (OMICRON), a provider of testing and diagnostic solutions, which developed a novel method and instrumentation employed in this application. Results revealed close agreement (1–3% difference) between the measured and analytically obtained positive-sequence impedances for the measured line. Differences in zero-sequence impedances were much larger (about 20%), reflecting the use of a generic assumption for earth resistivity in computing transmission line electrical characteristics. Accurate knowledge of line impedances can enhance the reliability of protection settings, thus minimizing the risk of relay misoperations. Also, it can advance the quality of power system models used in planning, engineering and operating studies, as mandated by NERC under Reliability Standard MOD-032-1.

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BOLD™:新的线路设计满足新的阻抗测量方法

本文介绍了美国电力公司(AEP)在印第安纳州韦恩堡附近的一个新的345千伏输电项目上进行的阻抗测量，该项目采用了创新的高容量/高效率紧凑型线路设计，商标为BOLD™(突破性架空线路设计)。测量是与测试和诊断解决方案提供商OMICRON Electronics Corporation (OMICRON)合作进行的，该公司开发了一种用于该应用的新方法和仪器。结果显示，测量到的和分析得到的被测线路的正序阻抗非常接近(1-3%的差异)。零序阻抗的差异要大得多(约20%)，这反映了在计算传输线电气特性时使用了接地电阻率的一般假设。准确了解线路阻抗可以提高保护设置的可靠性，从而最大限度地降低继电器误操作的风险。此外，它还可以提高规划、工程和运行研究中使用的电力系统模型的质量，按照NERC在可靠性标准MOD-032-1的要求。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2018 IEEE/PES Transmission and Distribution Conference and Exposition (T&D)

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