ENERGIZATION TRANSIENTS OF SHUNT REACTORS

This paper investigates impacts of energization transients of large sh unt reactors on the operation of HVAC and HVDC/AC power systems. The E lectromagnetic Transients Program for DC systems (EMTDC) is used for t he simulation studies. The studies conclude that shunt reactor energiz ation can result in undesirable response of power system apparatus and even interruption of power flow, e.g. commutation failure of HVDC con verters. The studies also indicate-that the energization transients ca n be adequately alleviated based on the use of preinsertion resistor a nd/or controlled energization strategies.