Validating Finite Element Analysis of Short-Circuit Induced Stress in Electrical Panels: An Experimental and Simulation Approach

In an electric power transmission system, the occurrence of a short circuit leads to the emergence of stresses induced by electrodynamic forces. This study involved obtaining stress values through two phases: experimental testing and finite element simulation. During the experimental phase, we determined the ratio between the model's inherent frequency and the frequency of the city's electricity in order to derive the values of stresses induced by different short-circuit currents. During the period of finite element simulation, we acquired the stress values resulting from various short-circuit currents in the simulator. The statistics of the Solidworks program are derived from a stable problem. Considering the interdisciplinary nature of this problem, the COMSOL Multiphysics software is used to calculate the stress values induced by the short-circuit current. The calculations are performed in two-dimensional geometry using the Couple module. Three modules, specifically focused on electric, magnetic, and solid mechanics, are derived from a transient problem. Subsequently, the aforementioned analysis is conducted on the geometry of an industrial switchboard using this program. Furthermore, this research includes a comparison between the experimental solution and the finite element analysis to validate its accuracy.

کلیدواژه ها:

Stresses caused by short circuit current ، electrical panel ، electrodynamic forces