DORELCO is a rural electric cooperative located in the town of Tolosa, Island of Leyte, in the Philippines. They provide electrical service to 13 municipalities throughout a mostly rural area.
Owen Electric is located in Northern Kentucky and serves about 58,000 members. The Boone feeder stretches several miles out from the Boone substation. It has both single and three-phase conductors (12.47/7.2 kV, grounded Wye), with multiple taps branching off. The area is fairly hilly, rural and has lots of trees.
James Bridges, VP of Engineering, explains, “At that time, we believed that trees might be causing the momentary outages, but we did not see any evidence that trees were in the lines.
In an industry driven by the size of performance indices, minimizing the size of an outage is vital. Alabama Power does this by adding interrupting devices to the lines. "Just like everyone else, we're driven by SAIDI, SAIFI, MAIDI and MAIFI," said Robert Cheney, Team Keader of Alabama Power Test Lab. "We're taking a hard look at our system and figuring out what we can to do improve those numbers."