This paper aims to reduce the transient overvoltages problem occurred in switching shunt capacitor banks by pre-insertion resistor. Capacitor banks installed in power system are used to compensate the reactive power demand for improving the network’s voltage profile and decreasing the network’s losses. Capacitor banks may be switched on and off frequently during a typical day according to certain load curves. The switching actions will produce large transient overvoltages. These transients may cause serious power quality problems. This paper compares the responses of several typical switching strategies by Alternative Transients Program (ATP) and some suggestions for reducing transients are proposed.
