Modeling on Impulse Voltage Distribution and Experimental Study of Reverse Series-Connected Solenoids

摘要

With the increase of the grid voltage rating, the superconducting fault current limiter operates at a higher voltage and bears various overvoltages under the fault. The insulation of the limiter plays an important role in maintenance of the safe operation. The study about the wave process of superconducting fault current limiter under lightning impulse can provide a basis for the design of longitudinal insulation of the limiter. This paper presents a distributed model and a distribution-lump-type model of the reverse series-connected solenoid resistive type DC superconducting current limiter under lightning impulse. The wave process of the limiter is solved by using the finite element software and MATLAB. A test model was made for experimental verification, and the results had a good numerical agreement with the simulation results.