CAIDI with Distribution Automation Van Holsomback Electric Power

CAIDI with Distribution Automation Van Holsomback Electric Power Research Institute Technical Executive www. epri. com © 2019 Electric Power Research Institute, Inc. All rights reserved.

4 Representative Feeders WWWW with customer counts, fault locations and repair times 2 B 1 NO 4 hours to repair 400 5 hours to repair 8 hours to repair NO 500 B 2 400 500 6 hours to repair 500 3 hours to repair 2 hours to repair NO 700 B 3 700 0 hours to repair 7 hours to repair NO B 4 600 3 hours to repair www. epri. com 600 5 hours to repair © 2019 Electric Power Research Institute, Inc. All rights reserved.

4 Representative Feeders WWWW with customer counts and fault locations with repair times B 1 NO 4 hours to repair 400 5 hours to repair 400 8 hours to repair WWWW Travel Time to all feeders is 60 minutes 3 NO 500 B 2 500 6 hours to repair 500 3 hours to repair 2 hours to repair NO 700 B 3 700 0 hours to repair 7 hours to repair NO B 4 600 3 hours to repair www. epri. com 600 5 hours to repair © 2019 Electric Power Research Institute, Inc. All rights reserved.

Customer Minutes of Interruption Calculation WWWW Feeder protection only with restoration switching before repair 4 B 1 NO 4 hours to repair 400 5 hours to repair 8 hours to repair CMIs= 624, 000 NO 500 B 2 400 500 6 hours to repair 500 3 hours to repair 2 hours to repair CMIs= 600, 000 NO 700 B 3 700 0 hours to repair 7 hours to repair CMIs= 546, 000 NO B 4 600 3 hours to repair www. epri. com 600 5 hours to repair CMIs= 504, 000 © 2019 Electric Power Research Institute, Inc. All rights reserved.

Reliability Indices § Feeder Protection Only • SAIDI • SAIFI • CAIDI 5 www. epri. com 2, 274, 000 CMIs 344. 55 2. 41 143. 02 © 2019 Electric Power Research Institute, Inc. All rights reserved.

Customer Minutes of Interruption Calculation WWWW Adding protection zones with restoration switching 6 B 1 NO 4 hours to repair 400 R 5 hours to repair 500 B 2 400 R 8 hours to repair CMIs= 600000 NO R 500 6 hours to repair 500 R 3 hours to repair 2 hours to repair CMIs= 510, 000 NO 700 B 3 R 700 R 7 hours to repair CMIs= 420, 000 0 hours to repair NO B 4 600 R 3 hours to repair www. epri. com 600 R 5 hours to repair CMIs= 432, 000 © 2019 Electric Power Research Institute, Inc. All rights reserved.

Reliability Indices § Feeder Protection Only • SAIDI • SAIFI • CAIDI 344. 55 2. 41 143. 02 § Protection Zones • SAIDI • SAIFI • CAIDI 7 www. epri. com 2, 274, 000 CMIs 1, 962, 000 CMIs 297. 27 1. 62 183. 36 © 2019 Electric Power Research Institute, Inc. All rights reserved.

Customer Minutes of Interruption Calculation Adding protection zones with DSO executed restoration switching WWWW Assumes 10 minutes for DSO to write and execute restoration switching 8 B 1 NO 4 hours to repair 400 R 5 hours to repair 500 B 2 400 R 8 hours to repair S CMIs= 500, 000 NO R 500 6 hours to repair 500 R S 2 hours to repair 3 hours to repair CMIs= 435, 000 NO 700 B 3 R 700 R 0 hours to repair 700 S 7 hours to repair CMIs= 385, 000 NO B 4 600 R 3 hours to repair www. epri. com 600 R 600 S 5 hours to repair CMIs= 372, 000 © 2019 Electric Power Research Institute, Inc. All rights reserved.

Reliability Indices § Feeder Protection Only • SAIDI • SAIFI • CAIDI 344. 55 2. 41 143. 02 § Protection Zones • SAIDI • SAIFI • CAIDI 1, 962, 000 CMIs 297. 27 1. 62 183. 36 § DSO FLISR 1, 692, 000 CMIs • SAIDI • SAIFI • CAIDI 9 2, 274, 000 CMIs www. epri. com 256. 36 1. 62 158. 13 © 2019 Electric Power Research Institute, Inc. All rights reserved.

Customer Minutes of Interruption Calculation WWWW Adding protection zones with automated restoration switching 10 B 1 NO 4 hours to repair 400 R 5 hours to repair 500 B 2 400 R 8 hours to repair S CMIs= 480, 000 NO R 500 6 hours to repair 500 R S 2 hours to repair 3 hours to repair CMIs= 420, 000 NO 700 B 3 R 700 R 0 hours to repair 700 S 7 hours to repair CMIs= 378, 000 NO B 4 600 R 3 hours to repair www. epri. com 600 R 600 S 5 hours to repair CMIs= 360, 000 © 2019 Electric Power Research Institute, Inc. All rights reserved.

Reliability Indices § Feeder Protection Only • SAIDI • SAIFI • CAIDI 344. 55 2. 41 143. 02 § Protection Zones • SAIDI • SAIFI • CAIDI 1, 962, 000 CMIs 297. 27 1. 62 183. 36 § DSO FLISR 1, 692, 000 CMIs • SAIDI • SAIFI • CAIDI 256. 36 1. 62 158. 13 § Automated FLISR • SAIDI • SAIFI • CAIDI 11 2, 274, 000 CMIs www. epri. com 1, 638, 000 CMIs 248. 18. 80 309. 06 © 2019 Electric Power Research Institute, Inc. All rights reserved.

Can CAIDI be adjusted to index all reliability improvements? § 12 www. epri. com © 2019 Electric Power Research Institute, Inc. All rights reserved.

Reliability Indices § Feeder Protection Only • SAIDI • SAIFI • CAIDI 344. 55 2. 41 143. 02 § Protection Zones • SAIDI • SAIFI • CAIDIDA 143. 02 1, 962, 000 CMIs 297. 27 1. 62 183. 36 § DSO FLISR CAIDIDA 123. 40 1, 692, 000 CMIs • SAIDI • SAIFI • CAIDI 256. 36 1. 62 158. 13 § Automated FLISR • SAIDI • SAIFI • CAIDI 13 2, 274, 000 CMIs www. epri. com CAIDIDA 106. 42 1, 638, 000 CMIs 248. 18. 80 309. 06 CAIDIDA 103. 02 © 2019 Electric Power Research Institute, Inc. All rights reserved.

How to Improve CAIDI vs CAIDIDA § CAIDIDA Employ additional first responders ✔ – Establish alternate sources ✔ – Switch before repair ✔ – Avoid additional protection zones ✘ – Avoid automated FLISR ✘ – Avoid adding new feeders ✘ – 14 www. epri. com Deploy as many protection zones as possible ✔ – Establish alternate sources ✔ – Install controllable normal opens ✔ – Deploy automated FLISR ✔ – Employ additional first responders ✔ – Perform additional switching before repair ✔ – Avoid adding new feeders ✘ – © 2019 Electric Power Research Institute, Inc. All rights reserved.

Together…Shaping the Future of Electricity 15 www. epri. com © 2019 Electric Power Research Institute, Inc. All rights reserved.