Xcel Energy Smaller Scale Transmission Projects - PowerPoint PPT Presentation

About This Presentation
Title:

Xcel Energy Smaller Scale Transmission Projects

Description:

Title: PowerPoint Presentation Author: Authorized User Last modified by: Daniel Kline Created Date: 1/2/2006 4:26:35 PM Document presentation format – PowerPoint PPT presentation

Number of Views:47
Avg rating:3.0/5.0
Slides: 15
Provided by: Autho651
Category:

less

Transcript and Presenter's Notes

Title: Xcel Energy Smaller Scale Transmission Projects


1
(No Transcript)
2
Xcel Energy Smaller Scale Transmission Projects
  • Northern MAPP Subregional Planning Group
  • April 3, 2007
  • Srinivas Vemuri, Jason Standing, and Daniel Kline

3
Small Project Information
  • T-Corners Transformer Replacement
  • Hyland Lake Dean Lake 115 kV Upgrade
  • Woodbury Tanners Lake Upgrade
  • Northeast Mankato 69 kV Plan
  • South Shakopee Substation
  • Ironwood Second Transformer
  • Ironwood Bus Upgrade
  • Lawrence Second Transformer
  • Tracy Switching Station Capacitors
  • Keegan Lake Lebanon Hills
  • Prescott 10 MVAR Cap Bank

4
T-Corners 115/69 kV Transformer Replacement
  • Substation currently has two 115/69 kV
    transformers (1 2)
  • Tx 1 62.5 MVA
  • Tx 2 112 MVA
  • Summer 2011 Loss of Transformer 2 will load 1
    to 80 MVA (128)
  • Plan to replace existing 62.5 MVA bank with
    matching 112 MVA bank

5
T-Corners 115/69 kV Transformer Replacement
T-Corners
Eau Claire Metro Area
6
Ironwood Second Transformer
  • Ironwood 88/34.5 kV Transformer currently rated
    at 25 MVA
  • 78 MW generation at Bayfront Substation
  • Loss of Bayfront 115/92 kV transformer sends
    Bayfront generation through 88 34.5 kV systems
  • Severely overloads Ironwood Bayfront 88 kV line
  • Severely low voltages along Ironwood 34.5 kV
    system
  • Add second Ironwood 88/34.5 kV transformer

7
Ironwood Second Transformer
8
Ironwood Terminal Equipment Upgrade
  • Ironwood Bayfront 115 kV conductor rated at 189
    MVA (850 Amps)
  • Ironwood 115 kV substation equipment with various
    ratintgs
  • 200 Amp CT
  • 300 Amp Wave Trap
  • 380 Amp Bus
  • 400 800 Amp Breakers, 600 Amp Switches
  • Outage of Bayfront Saxon Pump 88 kV line loads
    Ironwood 115 kV to 72 MVA (361 Amps)
  • Outage of Bayfront 115/92 kV transformer loads
    Ironwood 115 kV to 87 MVA (437 Amps)
  • Replace capacity-limiting terminal equipment

9
Lawrence Second 112 MVA Transformer
  • This project is to add an additional 115/69 kV,
    112 MVA transformer at the Lawrence Substation in
    Sioux Falls. This is needed due to the
    double-circuit outage of the 115 kV line out of
    Split Rock to Cheery Creek.
  • In Summer 2011, loss of Split Rock-Cherry Creek
    and Split Rock-West Sioux Falls double-circuit
    outage results in a loading of 145.9 MVA (130.2)
    of the 112 MVA transformer at Lawrence.

10
Lawrence Second 112 MVA Transformer
11
Tracy SW 12 MVAR CAP
  • This project is to replace the existing 5.4 MVAR,
    69 kV cap bank at the Tracy Switching Station
    with a new 12 MVAR cap bank.
  • In Summer 2006, for loss of the Lyon County 69 kV
    source, the following buses have low voltage
  •  
  • Walnut Grove 0.855 pu
  • Tracy SS 0.856 pu
  • Lake Sarah 0.860 pu
  • Currie 0.872 pu
  • Slayton 0.886 pu
  • Hadley 0.898 pu
  • Lake Wilson 0.905 pu

12
Tracy SW 12 MVAR CAP
13
Kegan Lake Lebanon Hills 69 kV Line Upgrade
  • Reconductor the 3 8 CU section of the Kegan Lake
    Lebanon Hills 69 kV line to at least 48 MVA.
  • During 2011 summer peak conditions, the line
    overloads to 110.5 in the base case.

14
Kegan Lake Lebanon Hills 69 kV Line Upgrade
Write a Comment
User Comments (0)
About PowerShow.com