Optimization method and system for air gap parameters of voltage transformer core

Abstract

The present application relates to the technical field of voltage transformer, and discloses a method and system for optimizing air gap parameters of a voltage transformer core, comprising: obtaining initial parameters and measurement requirements; constructing a parallel equivalent magnetic circuit and equivalent circuit model of a misaligned distributed air gap, establishing a no-load error boundary constraint condition; dividing the core thickness direction into inner and outer continuous non-opening layers and a middle misaligned distributed air gap layer, calculating and distributing the number of reserved layers; setting air gap positions and relative misalignment amounts in the core column region covered by the winding, constructing a distributed magnetic path; combining error boundaries and overvoltage severe saturation working condition requirements to extract maximum and minimum air gap length boundaries; judging an effective feasible solution interval and solving target air gap parameters, and outputting optimized sizes. The present application takes into account both steady-state measurement accuracy and transient anti-ferrimagnetic resonance performance, constrains magnetic flux leakage divergence, and converts the optimization results into engineering control instructions, thereby improving manufacturing efficiency.

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