Embed Size (px)
Citation preview
Partnering to increase reliability and support renewable energy development
San Luis Valley – Calumet – Comanche Transmission Project
Voltage 230-kV 345-kV
Design Component Steel Lattice Structure
Steel Mono-Pole Structure
Steel Mono-Pole Structure
Typical Right-of-Way Width 150 Feet 150 Feet 200 Feet
Typical Distance Between Structures 800–1,200 Feet 800–1,200 Feet 800–1,200 Feet
Typical Structure Height 100–150 Feet 100–150 Feet 100–150 Feet
Typical Structures per Mile 4–6 4–6 4–6
Ground Clearance (beneath conductor under max operating conditions) 28 Feet 28 Feet 32 Feet
Minimum Clearance of Equipment to Energize Conductor 14 Feet 14 Feet 20 Feet
Clearances would be maintained in accordance with the National Electric Safety Code.
Electric Field Information
Electric fi elds have the potential to cause nuisance electrical shocks, which are also called “induced voltage.” Linear metallic facilities such as pipelines or fences that are relatively close and parallel the transmission lines for appreciable distances should be periodically grounded. Electric fi elds at ground level would not exceed the limits of the National Electrical Safety Code. While many activities are compatible with transmission line rights-of-way, precautions must be taken near electrical equipment.Corona is the electrical breakdown of the air into charged particles near high-voltage conductors. The charged particles can cause audible noise as well as radio and television interference, which is more noticeable in wet conditions. Audible noise levels dissipate as the distance increases from the transmission line.
For more information:Please call 1-877-482-7881 or visit www.socotransmission.com
Email: [email protected] Contacts: Nicole Korbe (Tri-State) or Keary Hallack (Xcel Energy)
Tri-State Generation and Transmission Association(Tri-State) and Public Service Company of Colorado (PSCo), an Xcel Energy company, are jointly proposing to construct the San Luis Valley–Calumet–Comanche Transmission Project, which would be owned and operated by the two companies. The proposed project would be constructed by the utilities and include the following components:
Approximately 95 miles of new double-circuit • 230-kilovolt (kV) transmission line from the existing San Luis Valley Substation, north of Alamosa, to a new Calumet Substation near WalsenburgA new 230/345-kV Calumet Substation at a location six • miles north of Walsenburg on property owned by Tri-State and expansion of three existing substationsApproximately 45 miles of new double-circuit • 345-kV transmission line between the proposed Calumet Substation and the existing Comanche Substation near PuebloApproximately six miles of new 230-kV transmission • line between the proposed Calumet Substation and the existing Walsenburg SubstationProposed communication facilities to support operation • and maintenance of the transmission lines
Transmission System
The transmission lines would provide area utilities with the delivery infrastructure necessary to increase the reliability and capacity of the existing transmission system. The project would also support proposed renewable energy development in the region.Transmission lines carry large amounts of electricity at high voltages across long distances. Once the electricity has been generated at a power facility, it is carried to a substation by a transmission line and to residential and business consumers via distribution power lines. Voltages on a transmission line typically range from 115 to 500-kV. Distribution lines carry the energy at lower voltages (12.5 to 34.5-kV) until it reaches a small transformer that converts it to a useable voltage for the consumer of 110 and 220-volts.
Design and Construction
Tri-State and PSCo are proposing to use a combination of steel lattice structures and steel mono-poles. The choice of structure type would be based on location and design conditions (e.g., mountainous vs. fl at terrain). The line would use low-corona hardware to minimize audible noise. Structures typically range between 100 and 150 feet tall. Some structures, particularly those crossing over other transmission lines, may need to be taller than 150 feet.
The utilities may hire a contractor to construct the transmission lines. Construction would be completed in several phases: access development, staging structures, foundation construction, framing and erecting the structures, stringing conductor, and reclamation. Several work phases may be in progress simultaneously at different locations along the alignment. Construction of the transmission line is expected to last approximately 18 to 24 months.
1
2
3
4
Electric Generating Resources
Receiving Station
Distribution Station
Residential Customer
Industrial Customer
Commercial Customer
5
6
Overhead Transmission Lines
Distribution Lines
Sub-Transmission Lines
Underground DistributionLines
Engineering and Electric Transmission
Apishapa River
Rio
Gra
nde
Cana
l
Creek
River
San
La Jara Creek
Saint Charles River
Greenhorn River
Grape
Cree
k
Santa Clara Creek
Williams Creek
Middle Creek
Rito Alto Creek
Rio Grande
k
Trinchera
Cucharas River
Huerfano
Rio Grande
Rock Creek
Ute
Cre
ek
Luis
Creek
Sangre
deCristo
Cree
k
Trinchera Creek
Cuc
hara
s Ri
ver
Huer
fano
Rive
r
La JaraReservoir
CucharasReservoir
San LuisLake
SmithReservoir
Seven Lakes Reservoir
Nepesta Res
Mountain HomeReservoir
Rye
Mosca
Hoehne
Blanca
Hooper
Center
Moffat
Beulah
Sanford
La Jara
Cuchara
Aguilar
Alamosa
La Veta
Gardner
Wetmore
Saguache
Avondale
Walsenburg
MonteVista
Westcliffe
Villa Grove
FortGarland
Silver Cliff
Colorado City
LAS ANIMASCOUNTY
SAGUACHE COUNTY
PUEBLOCOUNTY
HUERFANOCOUNTY
CONEJOSCOUNTY
COSTILLACOUNTY
CUSTERCOUNTY
RIO
GR
AN
DE
CO
UN
TY
ALAMOSACOUNTY
WalsenburgSubstation
San Luis ValleySubstation
ProposedCalumet
Substation
ComancheSubstation
17
96
165
12
69
78
10
159
15
150
112
165
96
69
17
25
160
285
285
50
160
25
25
Closed Basin
BNSF
BNSF
SLRG
SLRG
S A N
L U I S
V A L L E Y
WE
T
MO
UN
TA
IN
S
SA
NG
RE
DE
CR
IS
TO
MO
UN
TA
IN
SFuture
Solar Facility
FutureSolar Facility
MoscaSolar Facility
Existing Electric System
115-kV Transmission Line230-kV Transmission Line69-kV Transmission Line
Substation/Switching StationGeneration Facility
CCCCuCCccccchhhaarrrass RRRRRRiiivverrrr
UUt
UUeett
CCrrCCerrekk
CCCCCrrC iisttoo
CCCCCCCCCCCCCCrrrrrCCCCeeeeeerrrreeeeekkkkkkkkkk
SSaSS nn LLuissiiiLLaakkeekk
Mosca
BBBlllaaannncccaaaAAllaammmmmmoooossssaa
La VeVV ta
FFFFFFooorrrtttGGGGaarrllaanndd
UUEERRRRRRRFFFFFFFFFFFAAAAAAAAAANNNNNNOOOOOOCCCCCOOOOOOOOOOOUUUUUUUUUNNNNNNTTTY
COSTILLA
ALAMOSACOUNTY
yyyyyyyyyy
150
1160
CCllCCC oosseeddBBaassiinn
SSSSSSLLRRGGGGGG
VV AA LL LL EE YY CCRR
IISS
TTOO
MMoossccaaSSoollaalll rr FFaaFFF cciilliii iilll ttyytt
HUE
P r o p o s e d D o u b l e - C i r c u i t 2 3 0 - k V T r a n s m i s s i o n L i n e
vverr
CCu
CCcchh
arras
RRiivvee
rr
CCuCC cchharrassRReesseerrvvooiirr
10
25
Pro
posed Double
-Cir
cuit
345
-kV
Tra
nsm
issi
on
Lin
e
WWWWWWWWWWaaWWW
WWWWWWWWWWWWWWWWWWWWWWWWWaaaaaaaaaaaaaaaWWWWWWW llllllsssssssssssssssseeSS bbb tt
255
BBBNNNNSSSSFFF
P r o p o s e d 2 3 0 - k VD o u b l e - C i r c u i tTr a n s m i s s i o n L i n e
P r o p o s e d 2 3 0 - k VD o u b l e - C i r c u i tTr a n s m i s s i o n L i n e
San Luis Valley - CalumetStructure Types
yy Calumet - ComancheStructure Type
Calumet - WalsenburgStructure Type
Typical 100’-150’
10’19’ 6”
19’ 6”
Typical 100’-150’10’
21’21’
10’
14’6”
16’
14’6”
10’
10’
10’
15’
15’
16’6”
20’
22’
20’
Typical 100’-150’
345-kV Double CircuitSteel Mono-Pole
Right-of-Way = 200’
230-kV Double CircuitLattice Structure
230-kV Double CircuitSteel Mono-Pole
Right-of-Way = 150’ Right-of-Way = 150’
Typical 100’-135’
10’19’ 6”
19’ 6”
10’
14’6”
16’
14’6”
10’
230-kV Double CircuitSteel Mono-Pole
Right-of-Way = 100’
![POLE LICENSE AGREEMENT FOR WIRELESS ATTACHMENTS …...pole license agreement for wireless attachments between pacific gas and electric company and [company]](https://img.pdfslide.us/doc/110x75/5fc9cca934294d7640474408/pole-license-agreement-for-wireless-attachments-pole-license-agreement-for-wireless.jpg)
