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Electrical power supply network protecting method, involves computing distance between midpoint of fault current and point on origin of impedance plane, and adjusting current threshold value in accordance with formula
Electrical power supply network protecting method, involves computing distance between midpoint of fault current and point on origin of impedance plane, and adjusting current threshold value in accordance with formula
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机译：电源网络保护方法，涉及计算故障电流中点与阻抗平面原点之间的距离，并根据公式调整电流阈值
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摘要
The method involves measuring fault current of a faulty conductor at a location of an over current protection device and comparing the measured current with a current threshold value. An electrical power supply network is disconnected from the protection device, if the measured current is greater than the threshold value. A predetermined range of error detection is determined by determination of a point on an origin of an impedance plane. Distance between a midpoint of the fault current and the point is computed, and the current threshold value is adjusted in accordance with a formula.
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