UPDATE ON THE RELAY AND AUTOMATION UPGRADE PROJECT AT SNOHOMISH COUNTY

This month’s Featured Technical Paper is from the Proceedings of the 2020 International Conference of Doble Clients. The paper is titled: Update on the Relay and Automation Upgrade Project at Snohomish County.

Abstract

A significant relay and automation project began at Snohomish County Public Utility District (SnoPUD) in 2009. The objective of this project was to replace nearly every relay in the system in less than ten years. At the Doble spring 2015 conference, I provided a paper and presentation which described the strategy for constructing the relay upgrades and the benefits expected through modernizing our protection system equipment. The relay upgrade project was concluded in 2019, and this paper provides an update for the number of stations completed, the costs incurred, and the benefits which we have gained from the relay/automation upgrades. Some sections included in this paper are repeated from the 2015 paper to provide perspective, but other sections were left out. The 2015 paper was presented at the AMM session, and available through the Doble portal.

Doble Service Agreement Clients

Visit the Doble Portal. This and all other technical papers and presentations are available in the Doble Portal  - one of the many benefits available to you as a Doble Service Agreement Client. To get a Portal Login, email clientservicesinfo@doble.com to receive your user name and password.