Power Electronic Voltage Regulation In LV Distribution Networks

Distribution networks are becoming more stressed by new connection of large single phase loads, namely heat pumps and plug in electric vehicles, as well as connection of distributed generation. These low carbon technologies cause the voltage profile to stray outside of regulator imposed standards, hence limiting the capacity for installation of these technologies. Here it is shown, by detailed simulation of a generic UK network, the effect of increasing load and generation upon the network. Four LV based power electronic topologies for voltage regulation are presented and then incorporated into the network. Results indicate the ability of power electronics installed at LV to increase capacity and reduce network losses. Finally, a comparison of these topologies is given.