Power distribution network failure data self-synchronizing method based on instantaneous amplitude change
A technology of distribution network fault and instantaneous amplitude, applied in fault location, information technology support system, etc., can solve the problems of large detection error at fault time, slow start, poor self-synchronization effect, etc., to improve the accuracy and speed of time synchronization Fast, highly sensitive results
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[0063] Example 1
[0064] Such as image 3 As shown, the specific steps for implementing the method for self-synchronization of distribution network fault data based on instantaneous amplitude changes are as follows:
[0065] Step 1: The logic program starts;
[0066] Step 2: Collect current sampling data of current transformer in real time, and extract the sampling data of ABC three-phase current at the same time;
[0067] Step 3: Calculate the instantaneous amplitude of current in real time using the product of sampled values (two-point or three-point product of sampled values);
[0068] Step 4: Calculate the sudden change in current amplitude of one cycle forward;
[0069] Step 5: Determine the fault. If there are three consecutive current instantaneous integrated amplitude mutations that exceed the threshold, determine the existence of the fault;
[0070] Step 6: Fault processing, take the first point above the mutation threshold as the fault moment, and calculate the relevant feat...
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