Minimizing Outages with Interrupting Devices
Minimizing the size of an outage is vital. Using a combination of both sectionalizers and reclosers allows you to add more devices to the line.
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Written by Hubbell Power Systems on October 10, 2017
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."
Alabama Power's strategy to preventing outages includes fuses, reclosers and sectionalizers. Line devices and protection schemes can usually handle three or four, time-coordinated devices on a feeder, while still maintaining proper separation between tipping curves. Using a combination of both sectionalizers and reclosers allows you to add more devices to the line.
Alabama Power has been successfully utilizing sectionalizers for years. This process has allowed the engineers to be more flexible in the field. How does your utility handle coordinated devices? Leave a comment below.
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