20170105PAC to Staff-UT Appendix A.pdf

Appendix B
Repowered and New wind farm Asuumptions
Assumptions:Repowering Wind Generation in Wyoming
Dunlap Generation -The existing 74 GE 1.5 SLE wind turbines will be upgraded
to GE 1.85 ESS increasing the generating capacity by 26 megawattsfrom 111 MW
to 137 MW.Although per the D.2 Project study plan the output of repoweredunits
will be limited to current LGI agreement.
Glenrock Generation -The existing 79 GE 1.5 SLE wind turbines at Glenrock and
79 GE SLE wind turbines at Rolling Hills will be upgraded to GE 1.85 ESS
increasing the generating capacity by 27.65 megawatts on each wind farm from
118.5 MW to 146.15 MW for a total capacity of 292.3 MW.
High Plains Generation -The existing 66 GE 1.5 SLE wind turbines at High Plains
and 19 GE SLE wind turbines at McFaddenRidge will be upgradedto GE 1.85 ESS
increasing the total generating capacity by 29.75 megawatts from 127.5 MW to
157.25 MW.The wind generatingfacility capacity for High Plains will increase by
23.1 megawattsfrom 99 MW to 122.1 MW.The capacity of McFadden Ridge will
increase by 6.65 megawattsfrom 28.5 MW to 35.15 MW.
Seven Mile Hill Generation -The existing 66 GE 1.5 SLE wind turbines at Seven
Mile Hill I and 13 GE SLE wind turbines at Seven Mile Hill II will be upgradedto
GE 1.85 ESS increasingthe total generatingcapacityby 27.65 MW from 118.5 MW
to 146.15 MW.The wind generating facility capacity for Seven Mile Hill I will
increase by 23 megawattsfrom 99 MW to 122 MW.The capacity of Seven Mile Hill
II will increase by 4.5 megawattsfrom 19.5 MW to 24 MW.
Table 1:Repowered Wind Facilities Data
Generator Data
Generation #/Units Type Pmax/Pmin Qmax/Qmin Mbase
(MW)(MVAR)(MVA)
Dunlap 74XGE 1.85 ESS 136.9 +/-66.30 152.1
Glenrock 79XGE 1.85 ESS 146.1 +/-70.8 162.4
RollingHills 79XGE 1.85 ESS 146.1 +/-70.8 162.4
High Plains Generation 85XGE 1.85 ESS 157.2 +/-76.2 174.7
Seven Mile Hill Generation 79XGE 1.85 ESS 146.1 +/-70.8 162.4
Table 2:Repowered Wind Facilities Unit and Main Transformer Data
Unit and Main GSU Transformer Data
Generation Unit GSU MVA/Main GSU Taps MVA/
Positive Z Positive Z
Dunlap 0.69/34.5 kV 2 MVA;5.75%*34.5/230 kV Fixed Taps -75/100/125
241.5/235.75/23 MVA;
0/224.25/218.5 7.51%*
Glenrock 0.69/34.5 kV 2 MVA;5.75%*34.5/230 kV Fixed Taps -75/100/125
241.5/235.75/23 MVA;
0/224.25/218.5 7.51%*
Rolling 0.69/34.5 kV 2 MVA;5.75%*34.5/230 kV Fixed Taps -75/100/125
Hills 241.5/235.75/23 MVA;
0/224.25/218.5 7.51%*
High Plains 0.69/34.5 kV 2 MVA;5.75%*34.5/230 kV Fixed Taps -75/100/125
Generation 241.5/235.75/23 MVA;
0/224.25/218.5 7.36%*
Seven Mile 0.69/34.5 kV 2 MVA;5.75%*34.5/230 kV Fixed Taps -75/100/125
Hill 241.5/235.75/23 MVA;
Generation 0/224.25/218.5 7.46%*
*Impedance or self-cooled MVA rating
Assumptions:New wind farm in Wyoming
Table 3:Repowered Wind Facilities Data
Generator Data
Generation #/Units Type Pmax/Pmin Qmax/Qmin Mbase
(MW)(MVAR)(MVA)
Boswell Springs 64XGE 2.5-116 160/8 +/-77.5 177.8
Unit 1
Boswell Springs 64XGE 2.5-116 160/8 +/-77.5 177.8
Unit 2
Carbon County I 62XGE 2.0-116 124/6.2 +/-60.01 137.8
Unit 1
Carbon County I 63XGE 2.0-116 126/6.3 +/-61.0 140.0
Unit 2
Carbon County II 62XGE 2.0-116 124/6.2 +/-60.01 137.8
Unit 1
Carbon County II 63XGE 2.0-116 126/6.3 +/-61.0 140.0
Unit 2
Carbon County III 62XGE 2.0-116 124/6.2 +/-60.01 137.8
Unit 1
Carbon County III 63XGE 2.0-116 126/6.3 +/-61.0 140.0
Unit 2
McFadden Ridge II 6XGE 2.3-116 98.8/5.5 +/-47.9 109.8
34XGE 2.5-116
Table 4:New Wind Facilities Unit and Main Transformer Data
Unit and Main GSU Transformer Data (Two Each for all projects mentioned below)
Generatio Unit GSU MVA/Taps Main GSU Taps MVA/
n Positive Z Positive Z
Boswell 0.69/34.5 3.0 MVA;None 34.5/230/13 (+/-16)-LTC 108/144/180
Springs kV 5.75%*;.8 kV MVA;10%*;
Unit 1 and X/R =10 X/R =40
Unit 2
Carbon 0.69/34.5 2.3 MVA;None 34.5/230/13 Fixed Taps -84/140 MVA;
County I kV 5.75%*;.8 kV 241.5/235.75/9%*;X/R =
X/R =10 230/224.25/21 40
8.5
Carbon 0.69/34.5 2.3 MVA;None 34.5/230/13 Fixed Taps -84/140 MVA;
County II kV 5.75%*;.8 kV 241.5/235.75/9%*;X/R =
X/R =10 230/224.25/21 40
8.5
Carbon 0.69/34.5 2.3 MVA;None 34.5/230/13 Fixed Taps -84/140 MVA;
County III kV 5.75%*;.8 kV 241.5/235.75/9%*;X/R =
X/R =10 230/224.25/21 40
8.5
McFadden 0.69/34.5 3.0 MVA;None 34.5/230/13 Fixed Taps -75/125 MVA;
Ridge II kV 6.1%*;.8 kV 241.5/235.75/7.4%*;X/R =
X/R =10 230/224.25/21 40
8.5
Note:Tertiar/winding for main transformer is not modeled in power flow cases