Development of a transmission simulator based on hierarchical model

Recently, there are increasing efforts to use IT technologies on power domains that are power automation systems, simulation systems, etc. especially, simulation technologies are necessities for systems to improve their qualities and verify their errors with low costs. But, it's limited to use them because most of power simulation systems are focus on simulating small substations and commercial solutions need expertise knowledge to use them and their cost is very high. In this paper, we describe design and implementation of HBTS(Hierarchical Based Transmission Simulator) that similarly simulates Korea's substations. HBTS outputs each substation's currents, voltages, phase angles.