High frequency over voltages caused by switching the capacitor bank
Large capacitor banks are finding application and acceptance in medium voltage distribution networks and industries. The switching of the capacitor bank is important, and the transients should be considered. Load flow and network stability studies determine the size and location of the capacitor bank. Capacitor bank switching transients are at a frequency higher than the […]
Defects in power network due to the VCB
Introduction Today, the use of vacuum circuit breakers (VCBs) is increasing. Due to its maintenance-free operation, VCB is the best solution for MV networks. VCBs are more efficient than other types of circuit breakers for two main reasons. High dielectric strength The vacuum inside the VCB is a superior dielectric medium when compared to various […]
MR21 as a fault recorder alongside the old electromechanical relays
“An old problem! There is an old problem with the electro-mechanical protection relays. There is a lack of a disturbance and event recording unit for these relays. When a fault occurs, engineers check the operation of the relay and evaluate the condition of the substation equipment through which the fault current passed. Protection engineer can […]
