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New Directional Ground-Falult Elements Improve Sensitivity in Ungrounded and Compensated Networks

机译:新的定向接地故障元素提高了未接地和补偿网络的灵敏度

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This paper introduces two new directional elements for determining ground fault direction in ungrounded and compensated distribution networks. These elements only require information from the protected feeder and provide very high sensitivity. First, we review the basic characteristics of these distribution networks. Next we analyze the steady-state operation of a ungrounded and compensated system in the phase- and symmetrical-component domains under ground fault conditions and describe existing methods for detecting ground faults in these systems. We conclude by introducing new fault detection methods for compensated systems and show how those methods are implemented with modern relay technology.
机译:本文介绍了两个新的定向元件,用于在未接地和补偿分配网络中确定接地故障方向。这些元素只需要来自受保护进纸器的信息并提供非常高的灵敏度。首先,我们审查了这些分销网络的基本特征。接下来,我们在接地故障条件下分析了在相位和对称组件域中的未接地和补偿系统的稳态操作,并描述了用于检测这些系统中的接地故障的现有方法。我们通过引入补偿系统的新故障检测方法,并展示如何用现代中继技术实现这些方法。

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