The Use of a Static Series Compensator (SSC) for the Mitigation of Voltage Sags in a Radial Distribution Network

This paper investigates on power quality improvements provided by static series compensation in MV distribution networks. First of all, a simplified relationship between a fault in any position of a grid and a voltage sag experienced in another point of the grid itself is derived and its validity is verified by means of a detailed simulation performed in the PSCAD-EMTDC environment. Afterwards, the insertion of a static series compensator at a MV busbar of a typical Italian network is simulated and the benefits due to its voltage sag compensation capability are outlined, considering faults both at MV and HV levels.