20240909IPC to Staff 99 - Attachment 2.pdf

9/5/24, 12:48 PM CLRIS
Accounts Call Center Online Reports Profiles Forecasts Systems Web Maps PI System
Budget ID Maintenance(expanded)for #33827 Scope Document Add Budget ID Last Query_ New Query_ Main Menu
Budget ID ILNDNI90001 Title LNDN Convert Source From a Tap to a Loop Feed,add 138kV Breakers,Replace Feeder Relays and U
Solution 6835 Location LNDN-Linden Substation...Canyon Region v Submitted 08/16/2018
Co-Deps: Category Stations By Whom Irwin,Rebecca Status Authorized v
Origin IT&D Planning j CC 341 v Leader I Lim,Young v
Master Project TDEC Projects(other) Estimated In Srvc 01/31/2024
Master Group Date Completed
3-Growth v A v Program No v Purchase Cv Asset Replacement INo v
EIM Impact Yes v �v Complexity High v
Bring second 138kV transmission into LNDN. Install new 138kV breakers at LNDN to break up 138kV Line#404.This also includes the
Feeder Relay Replacements for LNDN 011A,013A,015A,017A and replacement of LNDNT132 with a larger(44.8 MVA)transformer.The
Feeder Relay Replacements entail removal of the 1999 vintage SEL-251 relays installed in the metalclad#2 feeder bay door panels for LNDN
011A,013A,015A,and 017A. Remove the feeder control panel in metalclad#2. Install two new CF9(125V DC)dual feeder panels in the
LNDN control building with SEL-351A primary and BU relays. There appears to be space for the new panels on the south side of Panel 3F.
Install new cables from the feeder metalclad bays to the new dual feeder panels. For SCADA upgrades,an SEL-2032 or an RTAC may be
needed. SCADA should include,at a minimum,the following points for distribution operation: Feeder level=3-phase MW,ground amps,by-
phase amps,and by-phase VARs and voltage.
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Reliability.The Linden,Hill,and Skyway substations serve 22,736 customers and have an actual coincident summer 2022 peak load of
101 MW.With the addition of several project and growth related load transfers,the 2024 forecasted peak load of 147MW will be served from
the CDWL-NMPA 138kV line#404.Our practice is to install transmission breakers when the combined peak load is projected to exceed
approximately 80MW.Limiting the loss of load is most efficiently provided by installing 138kV breakers at Linden.
Transformer capacity.In a 95th-percentile temperature event the forecasted peak load of 30.78MW on LNDN T-132 will exceed the planning
capacity by 20.8%in the summer of 2024.
40°C(104°F)nameplate rating=30MVA The transformer has been de-rated to 26MW per the instruction of Apparatus. It overheats when
loaded higher than that.
Planning Capacity=25.48MVA
Most recent actual peak,Summer 2022=25.8MW(after adjustment for temporary offloads,actual peak before adjustment was 21.1 MW)
Adjusted 95th-percentile temperature event peak=26.67MW
The average growth trend in this developing urban area is 2.87%annually.
The following alternatives have already been implemented for local area load management:
A load transfer of 1.8MW from LNDN15 to HILL17 is planned for 2022,with the load being transferred back in 2024 after Solution 7108.
A load transfer of 1.5MW from LNDN15 to HILL12 is planned for 2024(after Solution 7108)
A load transfer of 4.OMW from LNDN13 to VLVU14 is planned for 2023(after Solution 5786)
A load transfer of 1.15MW from CDWL014 to LNDN013 is planned for 2024.
A load transfer of 2.8MW from VLVU12 to LNDN11 is planned with Solution 7108 in 2024 to delay the need for a new VLVU transformer.This
transfer does not affect the need date of the LNDN transformer.
A load transfer of 3.2MW from LNDN17 to SKWY11 was executed in 2020
The following alternatives were considered and determined to not solve the issue,cause additional problems,or involve greater costs:
There is no available adjacent feeder/transformer capacity to offload the transformer.
No economical Non-Wires Alternatives identified.
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The Hill,Linden,and Skyway loads totaling 146MW in a 95th-percentile temperature year will continue to be at risk for extended outages
(if no action) outside of our reliability practice.
Load projections indicate that postponing the project by one year will result in loading the transformer 26.1%over the planning capacity in a
95th-percentile temperature year.Loading beyond the planning capacity will result in operational impacts.additional capacity beyond the
planning capacity will result in reduced capacity margin to accommodate operational needs.
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Related
Info T404200001 is the transmission project.
E/
Options
Evaluated
F(/ X
Status 05/16/2023 Stute:updated need and consequence per Planning....01/20/2023 MJS:Updated Detailed Estimate in prep for 2024 Budgeting.
Comments 12/30/2022 Stute: Updated Need and Consequences at request of Planning Engineer....7/28/22 DJP:updated need/consequence.
12/15/2021 DJP: Updated In Service date based on Transformer delivery. 2021-09-17(update via code)Status set to Authorized per Mark
GV, Stute. .. .9/8/2021 DJP: Incorporated the scope of LNDN190002 and Solution#7106 into this BID.07/29/2021 DJP: Uploaded Project
Schedule Forecast after PM made adjustments. 05/17/2021 LB: Updated the Need and Consequence per Planning. .. .07/01/2020 EH:
Moved In-Service to 2023. .. .3/30/20 RBJ:In-service moved to 2023.... 11/8/19MP:Lim to PL. ..10/31/19 MP: Updated Accounting.. .
.10/24/19 MP:Updated Title to Reflect Scope of Work.. .05/16/2019(MP):Updated per Planning. .. . 12/20/18 MP:Changed status to
Authorized. ...
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Environmental
d
Right-of-Way F
d
Permitting
d i
Spring/Fall
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Legacy Agrmt
Contract
Long Lead
Attachments RelfrEesh]
161220-LNDN170001 -LNDN Caldwell Sky Ranch Busi
Buisness Development-Sky Ranch Business Park(Master
Criteria Metric Draft 4.xlsx
LNDN v LNDN T132 upgrade planning estimate.xlsm
Attachments for Projects should be stored in//Fresno/CUSTOMERLR/CLRIS Attachments.
Budget&Costs Initial Scope Design Port Mmgt Actual
Account Sp CC Type Estimate Estimate Estimate Estimate Benefit To Date
Capital v 577 v 41 -Stations Distribution VO 1344992 0.000 W 3788836.93
Detailed Cost Estimates
Aut Car Def Rev Date Rev By Year
❑ ❑ ❑ 1 v 11/05/2019 Patterson,Marc v 2020 0
12 ❑ ❑ v 07/10/2020 Gray,Jesse v 2021 0
12 ❑ ❑ v 07/29/2021 Pohanka,Daisi v 2022 0
12 ❑ ❑ v 06/16/2022 Pohanka,Daisi v 2023 0
O ❑ ❑ v 12/18/2023 Sullivan,Melissa v 2024 1,058,374 19,675
❑ ❑ v 07/16/2024 Sullivan,Melissa v 2025 0
Add or Delete Year and linked information? All 4,132,408 19,675
Replace Detailed Estimate with Project Schedule Forecast
12 Portfolio Managed Project 19 Portfolio Reviewed Change Log
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