A single-phase grounding fault line selection method based on the steady-state variation before and after the fault
A technology of single-phase ground fault and line selection method, applied in the field of power system, can solve problems such as process complexity and improve the threshold of application, and achieve the effect of reducing model misjudgment and improving accuracy
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[0031] Refer to attached drawings. The data-driven single-phase grounding fault line selection method based on the steady-state variation information before and after the fault of the present invention adopts the following steps:
[0032] Step 1: Build the target distribution network with ungrounded neutral point in MATLAB / Simulink, input the line parameters, obtain the variation range of the system power supply operation mode, the variation range of each load, the breaking rule of the tie switch, and the single-phase grounding transition resistance size range.
[0033] Step 2: Set the operation mode of the distribution network, specifically:
[0034] (1) Randomly set the equivalent impedance within the changing range of the system power supply operation mode;
[0035] (2) Randomly set the load size within each load variation range;
[0036] (3) The state of each tie switch is randomly set according to the breaking rules of the tie switch.
[0037] Step 3: Set up a single-...
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