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| Study on anti-cross stage tripping system of coal mine transformer substation on the basis of differential protection |
| Liu Gang |
| Xishan Coal and Electricity Group Corporation Dongqu Mine, Gujiao 030200, China |
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Abstract Based on introduction of traditional solutions for anti-cross stage tripping in coal mine, the regional set control type anti-overstep tripping system based on differential protection and differential protection principles of sample value of current mutation were analyzed in detail, which improved anti-cross stage technology of coal mine transformer substation.
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