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基于有功分量比对法的高阻接地系统漏电保护判据的研究 被引量:2

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摘要 通过分析变压器中性点高阻接地低压电网发生单相漏电时各支路零序电流之间的关系,得出了一种通过两条支路零序电流比值的实部进行选择性漏电保护的方案。借助Matlab软件仿真及FFT(快速傅里叶变换)处理对该方案进行验证。结果表明,此方案可以在不采集零序电压的条件下实现低压电网的选择性漏电保护,不仅可靠性高,还降低了硬件方面的成本。
机构地区 中国矿业大学
出处 《电气应用》 北大核心 2011年第4期32-35,共4页 Electrotechnical Application
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