Effectiveness of D-SVC on rural networks

This paper presents Hitachi´s new D-SVC (Static VAr Compensator for Distribution Networks), which has been designed to combat voltage fluctuation problems caused by DRG (Distributed Renewable Generation) on distribution networks. Voltage fluctuations occur within different time frames, hence the D-SVC has been designed to operate in several different modes of voltage control corresponding to each type of fluctuation. In phase one of a demonstration project sponsored by the UK government´s LCNF (Low Carbon Network Fund), the D-SVC was installed adjacent to a windfarm in a rural 11kV distribution system to investigate the effectiveness of the D-SVC on voltage fluctuations caused by the windfarm. This paper describes the results obtained during this phase of the demonstration project.