CITY COUNCIL AGENDA ITEM
ACTION REQUESTED:
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Approve the award of Sole Source Procurement 20-143, Distribution Automation Upgrade, to Universal Utility Supply Company for an amount not to exceed $297,000
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DEPARTMENT: Electric Utility
SUBMITTED BY: Lucille Podlesny, Director
BOARD/COMMISSION REVIEW:
N/A
BACKGROUND:
The Electric Utility has S&C distribution automation (DA) switchgear installed at various points on the electric system. DA provides automatic 12.5kV feeder reconfiguration after a power line disturbance has occurred by isolating a faulted section of the feeder. Automatic reconfiguration reduces downtime and minimizes the number of affected customers during a power failure.
Naperville has a total of 48 DA teams which provide for 90% of automated protection of the 12.5kV feeders. The Utility began installing DA Teams in 1999 and each DA Team consists of multiple automated switchgear units which are automated by a controller that communicates via security control and data access (SCADA) to other automated switchgear in the team and back to the substation, routing to the Utility's fiber network and coming back to Electric Service Center (ESC). This allows for remote control of the units and provides feedback with pertinent data on the 12kV feeder back to ESC Control. DA Teams are added to feeders on an as needed basis based upon factors including customer load and distribution.
When originally purchased and installed, the DA teams used 2850 and 5800 series controllers in each automated switchgear. There are a total of 122 controllers in need of being upgraded. As part of CIP Project EU49, the Utility is upgrading to the 6800 series controllers because the 5800 series is no longer being manufactured and parts are not available for replacement.
This upgrade plan started in 2018 with a pilot and continued in 2019 with the purchase of 53 controller upgrades. In 2020, the Utility plans to upgrade 8 DA teams consisting of a total of 23 s...
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