Duke, EPRI DVR is quick-fix for dips
A momentary deviation in voltage, which can cause disaster in the manufacturing sector, can now be quickly corrected by the world`s first dynamic voltage restorer (DVR). The DVR, an electronic device that protects sensitive equipment from voltage fluctuations on a power line, keeps the equipment operating by rapidly injecting energy onto the line to compensate for a disturbance. Developed by Westinghouse with funding from Duke Power and the Electric Power Research Institute (EPRI), the first DVR entered commercial service on the Duke Power system in August. The DVR improves the quality of power delivered to South Carolina manufacturers.
The DVR is the latest and most advanced of several electronic power controllers that are part of EPRI`s Custom Power program. The DVR was developed at Westinghouse`s Science and Technology Center in Pittsburgh, Pa. Two similar DVRs are being commissioned–one in Australia and one in Florida. “The advanced power electronics technologies now becoming available enable utilities to add new value in their power delivery systems by providing levels of power quality never before possible, to serve customers with sensitive loads,” said John Kessinger, Westinghouse`s Energy Management Division general manager.