HomeMy WebLinkAbout2 E WCE Electrical Design ONELINE DIAGRAMUtility
transmission
Connection
Point
Existing 25 KV Utility Overhead Line
52
SEL-351 R Relay
Settings:67,50 ,
67G,59/27,81
50 -InstantaneousOvercurrent
50G -Instantaneous Residual Ground
Overcurrent
51 -Time Overcurrent
51P -Phase Time Overcurrent
51N -Neutral Time Overcurrent
67 -Directional Overcurrent
67G -Residual Ground Directional
Overcurrent
59/27 -Over/Under Voltage
81 -Over/Under Frequency
Directional Elements
Reclosing
Manyother functionsavailable.
New four pole overhead line
arrangement for mounting of electrical
protection equipment and metering,and
to transition from new overhead
transmission line to project
underground collection system
SA
To Sheet 2,JB6
Include PT’s,CT’sand metering cabinet
for utilityto install their own metering.
Utility maywant a different relayhere.
Metering
Equipment
Nome Electric Owned and Maintained
Metering,Relaying and Communication
Equipment At Interconnection Station
Electric cabinet(s)will also include
a small station service xfmr,small
batteries backup &charger system,
and communicationsinterfaced to
utilitySCADA and project remote
monitoring systems.
25kV -200A
200/5 MR
Set 50/5
200/5 MR
Set 50/5
200/5 MR
Set 50/5
Nome Wind Project
Electrical One-Line
Sheet 1 of 2
DWG NO.WCE-NOME-E1
DATE AUGUST 2008
Western Community Energy
Nome,Alaska
Scale
None
REUSE OF DOCUMENTS
THIS DOCUMENT,AND THE IDEAS ANDDESIGNS INCORPORATED
HEREIN,AS AN INSTRUMENT OF PROFESSIONAL SERVICE ,IS THE
PROPERTY OF K&R ENERGY CONSULTING LLC,AND IS NOT TO BE
USED,IN WHOLE OR IN PART,FOR ANY OTHER PROJECT WITHOUT
THE WRITTEN AUTHORIZATION OF K&R ENERGY CONSULTING LLC.
K&R ENERGY CONSULTING,LLC
NOTES:
1.This is a preliminary,performance-design drawing.It isnot
intended to be a construction or final design drawing.
2.Transformer impedancesshown are typical.Actual
impedances will not be known until transformersare purchased
and manufacturer’s data is made available.
3.Underground conductor sizes based on soil/fill assumptions
and project requirements (i.e.loss minimization,utility standards,
etc.).Soil tests and other project steps are required for final cable
type,sizing,and design decisions.PRELIMINARYspare
Overhead line visible disconnect switch
Overhead vacuum fault interrupter/recloser,
G&W Electric part #VIP388ER-12S
27kV
125kV BIL
At last overhead line pole, #1/0 AWG riser
from overhead line to padmount junction
box JB1,EPR,25 KV Al,approx.50 feet.
#1/0 AWG,Aluminum,EPR HDPE (MV-
105,shielded,133%insulation level,1/3
Cu concentricneutral),25 kV Al,
underground installation in 4"Schedule
40 conduit,Typical for all 25kV cable for
this project.Approx.750 feet from JB5
to JB6 on top of hill.
Coordinate settings with wind turbine
control panel protective settings.
Padmount junction boxJB1,
at Highway at bottom of hill
Padmount junction box JB2 Padmount junction box JB3 Padmount junction boxJB4 Padmount junction boxJB5
940 feet 1070 feet 1010 feet 885 feet 750 feet
25kV cable run heads uphill to
wind farm from here
Nome Wind Project
Electrical One-Line
Sheet 2 of 2
DWG NO.WCE-NOME-E1
To Sheet 1,JB’s 5-1 and
overhead line disconnect,
protection and metering
arrangement
10A
Transformer #T5,loop feed,
200 Amp loadbreakelbows Typical,
(fused at 10 Amps),
24.9KV -480V
Wye -Wye Ground
300 kVA
%Z =4.0
Dead-front
Transformer #T2,
24.9KV -480V
Wye -Wye Ground
150 kVA
%Z =4.0 (Typical of all the
wind turbine
transformersin this
project)
X/R =3.07,Typical
5A
SA
Direct bury cable in 4"conduit,buried
24"cover in estimated rho 170 backfill
soil or other material.Include a #4
bare Cu ground cable in entire length
of system,Typical.
1-#1/0 AWG (Al)per phase,type 3 high
density URD,underground,ducted PE 33,
Al,90 deg.C temperature rating,and
1 -#2 AWG Al neutral conductors (bundled
cable)per WTG connection and grounding
to the control panel and building ground,3"
Schedule 40 conduit,Typical.
DATE AUGUST 2008
Western Community Energy
Nome,Alaska
Scale
None
REUSE OF DOCUMENTS
THIS DOCUMENT,AND THE IDEAS ANDDESIGNS INCORPORATED
HEREIN,AS AN INSTRUMENT OF PROFESSIONAL SERVICE ,IS THE
PROPERTY OF K&R ENERGY CONSULTING LLC,AND IS NOT TO BE
USED,IN WHOLE OR IN PART,FOR ANY OTHER PROJECT WITHOUT
THE WRITTEN AUTHORIZATION OF K&R ENERGY CONSULTING LLC.
K&R ENERGY CONSULTING,LLC PRELIMINARY#1/0 AWG Al Cable Parameters,Typical:
Positive Sequence:
R =0.21 Ohms/1000 feet
Xl =0.045 Ohms/1000 feet
Zero Sequence:
R =0.3339 Ohms/1000 feet
Xl =0.1145 Ohms/1000 feet
Xc =0.0429 Mohms-1000 feet
For #1/0 AWG cable runs,use shown cable
lengths to calculate those impedances
based upon Typical valuesshown above.
0.95 power
factor,absorbing
VARs,Typical.
1-#4 AWG Cu per
phase and
neutral.
Control
Panel #4
WTG 5-4
50 KW
G
430 feet
25 feet
Control
Building
#1/0 AWG Al Cable Parameters,Typical:
Positive Sequence:
R =0.21 Ohms/1000 feet
Xl =0.045 Ohms/1000 feet
Zero Sequence:
R =0.3339 Ohms/1000 feet
Xl =0.1145 Ohms/1000 feet
Xc =0.0429 Mohms-1000 feet
For #1/0 AWG cable runs,use shown cable lengthsto
calculate those impedances based upon Typical values
shown above.
Control
Panel #3
WTG 5-3
50 KW
G
253 feet
Control
Panel #2
WTG 5-2
50 KW
G
20 feet
Control
Panel #1
WTG 5-1
50 KW
G
252 feet
480V Distribution
Panel,400A
Main,125A WT
FeederBkrs.
Cutler-Hammer Dist Equip
CircuitBreaker
FD3125 125A 3P CKT
BRKR
Series C F-FrameMold Case
Circ BreakerTypeFD Cable In/
CableOut 3 Pole
10A
Control
Panel #4
G
270 feet
25 feet
Control
Building
Control
Panel #3
WTG 4-3
50 KW
G
20 feet
Control
Panel #2
WTG 4-2
50 KW
G
341 feet
Control
Panel #1
WTG 4-1
50 KW
G
486 feet
Transformer #T4,
24.9KV -480V
Wye -Wye Ground
300 kVA
%Z =4.0
WTG 4-4
50 KW
10A
Control
Panel #4
G
352 feet
25 feet
Control
Building
Control
Panel #3
WTG 3-3
50 KW
G
20 feet
Control
Panel #2
WTG 3-2
50 KW
G
360 feet
Control
Panel #1
G
442 feet
Transformer #T3,
24.9KV -480V
Wye -Wye Ground
300 kVA
%Z =4.0
WTG 3-1
50 KW
WTG 3-4
50 KW
10A
SA
Control
Panel #4
G
338 feet
25 feet
Control
Building
Control
Panel #3
WTG 1-3
50 KW
G
20 feet
Control
Panel #2
WTG 1-2
50 KW
G
395 feet
Control
Panel #1
G
599 feet
Transformer #T1,
24.9KV -480V
Wye -Wye Ground
300 kVA
%Z =4.0
WTG 1-1
50 KW
WTG 1-4
50 KW
Control
Panel #2
G
416 feet
25 feet
Control
Building
Control
Panel #1
G
20 feet
WTG 2-1
50 KW
WTG 2-2
50 KW
#1/0 Al
468.5 feet 857.5 feet
JB9 3way
junction box
285.5 feet 955.6 feet 1001.7 feet
JB8 3way
junction box
JB7 3way
junction box
1007.4 feet
471 feet JB6 3way
junction box
468.1 feet
1-500 kcmil Cu per
phase plus neutral,EPR/
Hypalon jacket,600V
cable,installed in
4"Rigid Conduit,Typical.
480V Distribution
Panel,400A
Main,125A WT
Feeder Bkrs.
480V Distribution
Panel,400 A
Main,125A WT
Feeder Bkrs.
480V Distribution
Panel,400A
Main,125A WT
FeederBkrs.
480V Distribution
Panel,400A
Main,125A WT
Feeder Bkrs.
#1/0 Al#1/0 Al
#1/0 Al
50 KW nominal,66 KW
peak,Typical.
#1/0 AWG,Aluminum,EPR HDPE (MV-
105,shielded,133%insulation level,1/3
Cu concentric neutral),25 kV Al,
underground installation in Schedule 40
conduit,Typical for all 25kV cable for
thisproject.Approx.750 feet from JB5
to JB6.
NOTES:
1.This is a preliminary,performance-design drawing.It isnot
intended to be a construction or final design drawing.
2.Transformer impedancesshown are typical.Actual
impedanceswill not be known until transformersare purchased
and manufacturer’s data is made available.
3.Underground conductor sizes based on soil/fill assumptions
and project requirements (i.e.loss minimization,utility standards,
etc.).Soil tests and other project steps are required for final cable
type,sizing,and design decisions.