We apply the mode-matching method to the electrostatic analysis of shorted enclosed-cable trays that are generally used in industrial facilities such as nuclear power plants. In mode-matching formulation on the potential distribution, we utilize Laplace's equation and superposition principle. After obtaining modal coefficients from Dirichlet and Neumann boundary conditions, we then derive the potential and electric field distributions and the capacitance matrices to evaluate the electromagnetic influence due to a short accident.
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