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Advantages of Phasor and Vector Oriented Testing in Substation Grounding Safety

机译：相量矢量测试在变电站接地安全中的优势

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Current injection techniques used for testing grounding systems have evolved over the past two decades. They promoted the development of some test equipment that is capable of measuring the magnitudes and angles between injected current and split network currents, and between injected current and the network resulting voltages. Traditional test methods for ground grids found in standards such as IEEE 81-2012 need refreshing. These methods haven't changed in a long time and they follow a scalar based approach. Phasor-based methods for current injection help to assess the grounding systems and soils in a more natural state of operation. This paper compares scalar oriented testing vs phasor and vector oriented testing for analysis of substation ground grids. Benefits and disadvantages are listed for both approaches for the following tests: four pin (soil resistivity), three pin (ground grid resistance), fall of potential, current split, and touch and step voltage tests.
机译：在过去的二十年中，用于测试接地系统的当前注入技术得到了发展。他们促进了一些测试设备的开发，这些设备能够测量注入电流与分离的网络电流之间以及注入电流与网络所得电压之间的大小和角度。在诸如IEEE 81-2012之类的标准中发现的用于接地网格的传统测试方法需要刷新。这些方法很长时间没有改变，它们遵循基于标量的方法。基于相量的电流注入方法有助于评估接地系统和土壤是否处于更自然的运行状态。本文将标量定向测试与相量和矢量定向测试进行了比较，以分析变电站接地网。列出了以下两种测试方法的优缺点：四针（土壤电阻率），三针（接地栅极电阻），电势下降，电流分配以及接触电压和阶跃电压测试。

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