Analysis of Power Dissipation by Variation of Frequency on High Voltage Metal-Oxide Arrester Block

High voltage metal oxide surge arresters (MO-arresters) are requested to protect electrical power devices by limitation of internal or external transient overvoltages which occur in the high voltage power and distribution grid. The conduction of the surge arrester increases immediately after reaching a certain voltage level. Subsequently, it holds the voltage level, conducts the current, which is associated with the overvoltage, and ceases the high conduction period after reduction of the overvoltage. This significant effect of voltage limitation is accomplished through the highly nonlinear voltage-current curve of the metal-oxide ceramic material. Due to the height of high voltage MO-arrester and the resulting stray capacitances, it is obvious, that the voltage distribution along a…