In understanding partial discharge, tools representing it's phenomena is needed in order to reveal what factors influencing it and how it works. Factors influencing partial discharge phenomena in this simulation are inception voltage, stochastics factor represented early electron that conduct partial discharge, applied voltage, and bubble capacitance in liquid insulation. Directly, inception voltage with stochastics factors will determine when partial discharge occurs, and applied voltage with capacitance will determine amplitude of the discharges. Indirectly, inception voltage influence capacitance also, and stochastics factor is influenced by inception voltage and applied voltage.