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首页> 外文期刊>Power Engineering Review, IEEE >Technical Council Generator Ground Fault Protection Using Overcurrent, Overvoltage, and Undervoltage Relays
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Technical Council Generator Ground Fault Protection Using Overcurrent, Overvoltage, and Undervoltage Relays

机译：技术委员会使用过电流，过电压和欠电压继电器的发电机接地故障保护

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摘要

This paper describes the protective relaying schemes employed by Georgia Power Company to protect synchronous generators from single-phase-to-ground faults. Three types of relays are connected in the secondary of a distribution grounding transformer. These include a conventional electro-mechanical overcurrent relay with time overcurrent unit and instantaneous overcurrent unit, a solid-state overvoltage relay (with timing module) tuned to reject frequencies near 180 hertz, and a solid-state undervoltage relay (with timer) tuned to reject frequencies near 60 hertz present at the generator neutral. The proper method of selecting the generator grounding components and protective relays is described, and detailed setting instructions for all relays are also included.
机译：本文介绍了佐治亚电力公司用于保护同步发电机免受单相接地故障的保护性继电方案。三种类型的继电器连接在配电接地变压器的次级中。其中包括具有时间过电流单元和瞬时过电流单元的常规机电过电流继电器，经调谐以抑制接近180赫兹频率的固态过电压继电器（具有定时模块）和经调谐到以下频率的固态欠电压继电器（具有计时器）抑制发电机中性点处出现的接近60赫兹的频率。描述了选择发电机接地组件和保护继电器的正确方法，并且还包括所有继电器的详细设置说明。

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