Lighting Protection Design and Short-Circuit Calculation of Land-Based Ship Bases

For the electrical safety of the base of the training module of the land-based ship, relevant lightning intrusion and short-circuit protection measures have been designed for the base. In order to verify the correctness of its measures, the establishment of land-based ship training module base model, the base of lightning intrusion with or without lightning protection measures under the overvoltage and short-circuit current when the base occurs short-circuit check. Simulation results show that in two types of lightning current invasion conditions, the base installed lightning arrester inhibit lightning overvoltage amplitude of more than 77
^%
; for the distribution system short-circuit protection measures, in the important nodes at the installation of circuit breakers, a single feeder circuit breakers are to meet the normal operation, overload, short-circuit three conditions of the correct and timely action, the main and secondary levels of the two-level feeder box circuit breaker to meet the current between the fully selective and selective limit of 33.75kA. The limit is 33.75kA.