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Study on selective leakage protection system of mine high voltage grid based on harmonic phase comparison

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The experimental results show that the protective principle applies not only to the neutral point insulated power supply system, but also to the power supply system in which neutral point passes arc suppression coil, which can solve selective leakage protection problems under different neutral grounding ways, improving the reliability of selective leakage and guaranteeing the stability of the action value.

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Nội dung Text: Study on selective leakage protection system of mine high voltage grid based on harmonic phase comparison

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