Three-dimensional fault line selection method based on random resonance and transient current signal
A technology of transient current and fault line selection, which is applied in the direction of fault location, measurement of electricity, measurement of electrical variables, etc., can solve the problem of less research on power systems
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[0106] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0107] like figure 1 A three-dimensional fault line selection method based on stochastic resonance and transient current signals is shown, including the following steps:
[0108] (1) When the distribution network zero-sequence voltage u 0 (t) greater than 0.15 times the bus rated voltage U N When the voltage transformer TV and the arc suppression coil are disconnected and series resonance is detected respectively, if the voltage transformer TV is disconnected, the voltage transformer TV disconnection warning is issued; otherwise, it is judged whether the arc suppression coil has series resonance, If the arc-suppression coil has series resonance, adjust the arc-suppression coil to eliminate the series resonance, otherwise it is determined that the distribution network is faulty, and at the same time start the sampling device to record the z...
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