Calculation Method for Voltage Distribution of Dry Hollow Series Reactor Under Lightning Impulse

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Abstract
The complex topology of dry-type hollow high-voltage reactors leads to significant inaccuracies in calculating inter-layer voltage distribution using traditional equivalent models during lightning impulse testing. In this study, the finite element method was employed to calculate the inductance and capacitance parameters of the reactor using the winding layers as subdivision units. The improved equivalent circuit model incorporates mutual capacitance between non-adjacent layers. Through a comparison of simulation and experimental results, the proposed improved equivalent circuit model achieves accurate simulation of the reactor’s voltage distribution. This research contributes to the insulation design of the reactor.
Funding Information
  • Major Research Plan (51977148, 92066206)

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