Distribution Automation Applications
Fault Location, Isolation, and Service Restoration (FLISR)
Automatically minimize the impact of outages—within seconds.
What Is FLISR?
Fault location, isolation, and service restoration (FLISR) automatically restores power to as many customers as possible, as quickly as possible, in the event of a permanent fault. Without a distribution automation solution like FLISR, that outage must be handled manually, often resulting in an outage larger (in size and duration) than necessary.
Deploying FLISR makes it possible to improve coordination of switching devices already present for protection or sectionalization purposes on the electric power system and extend their utility into post-fault restoration.
Whether relying on a recloser’s own local sensing and logic or communicating with a sophisticated computing platform running FLISR software, those switching devices can be used to isolate a permanent fault, minimize the size of the outage, and restore load from adjacent feeders in a matter of seconds. Implementing a FLISR solution can also help improve reliability indices such as CMI and SAIFI.
Proven Reliability and Lifetime Support
Every SEL solution comes with the most reliable devices and best warranty in the electric power industry—plus free technical support for SEL products and systems.
We've collaborated closely with our customers since the company was founded nearly 40 years ago. And it’s a major reason why we’re North America’s most trusted provider of protective relays and ranked #1 by international utilities in price, service, and support.