A phenomenon, called as inter-area oscillations, has been a problematic arena for power grids for a long time. In this event, the travel of electric current over long distances results in increase of frequency on the utility end. The frequency on the consumer end then decreases, and switches every second or so. This occurs mostly over the summer season, due to higher power demand.
When a substantial amount of power is transmitted, the built up amplitude of the oscillations may become highly unruly, and may result in disruption of power. Until recent times, the only safe way to prevent such disruptions was to transmit lower amounts of power through the transmission line.
Recent research by engineers at the Montana Tech University and Sandia National Laboratories has showcased an award winning system that levels these oscillations utilizing a novel smart grid technique. This system enable utilities to push larger amount of power through the transmission line resulting in greater grid stability along with reduced utility cost for consumers.
Building up a route to the control these oscillations is particularly alluring in light of the fact that the elective answer for sending more power is to manufacture extra transmission lines, which cost about $10 million for each mile and takes over 10 years to construct and convey.
The fabricated control system decides the measure of energy to add or subtract to the power stream in view of constant estimations from unique sensors set all through the grid that decide how the recurrence of the power is carrying on at their area.
This control system could imitated to be used on DC lines with high voltage over the coming years, and applied to grid applications in the future.