Zero-sequence overcurrent protection method, system, device and computer-readable storage medium
A zero-sequence overcurrent and protection device technology, applied in the direction of emergency protection circuit devices, electrical components, etc., can solve the problems of non-protrusion, reduction of excitation inductance, large value current, etc., and achieve the effect of avoiding malfunction
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[0046] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0047] The embodiment of the present invention discloses a zero-sequence overcurrent protection method, see figure 1 As shown, the method includes:
[0048] S1: Obtain the zero-mode inrush current parameters of the transformer;
[0049] S2: Using the zero-mode inrush current parameters, the zero-mode inrush current analytical formula and the unsaturated core magnetic density expression, the zero-mode inrush current waveform is obtained;
[0050] S3: Use the ze...
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