After analyzing different design options, the authors decided to use an overhead collector system for the Mustang Wind Farm based on the design shown in Figure 1. This design had the lowest total construction cost of $4,073,913.56 and total annualized cost of $381,862.54 compared to other considered designs. Although underground transmission lines may be more reliable, the difference in cost of unreliability between overhead and underground lines does not outweigh the higher construction costs of underground lines. Therefore, an overhead system using the first design was selected.

1. Mustang Wind Farm Collector System
Centerville, WA
EE 456
Project 1 Final Report
April 24, 2015
Prepared by:
Yussuf Roble
Bayu Halim
Ki Hei Chan
for
Mr. John Smith
VP of Resource Development
Renewable Power Corporation, inc.

2. Executive Summary
Figure 1
After analyzing different design options, we have decided to build the collector system for
Mustang Wind Farm using an overhead implementation of the design shown in Figure 1. This
design has a total construction cost of $4,073,913.56 with a total annualized cost of $381,862.54/
year (total annualized cost includes the annualized cost of equipment, cost of unreliability, and
annual energy loss). In comparison with other design options that we have considered (different
designs will be further analyzed in the later sections), this design is relatively reliable, and the
cheapest to build.
Although underground transmission lines may prove to be more reliable than overhead
transmission lines, the difference in the cost of unreliability between overhead and underground
lines does not outweigh the difference in the total construction costs. Therefore, we have decided
to build overhead transmission lines using the above design for the Mustang Wind Farm collector
system.

3. Design Consideration
Figure 2
1st
Design Figure 3
2nd
Design
In choosing our design for the collector system, we have considered two designs which are shown
above (refer to Figure 2 and Figure 3). For the purpose of this comparison, we are going to compare
the two designs by connecting them through overhead lines. The 1st
design involves connecting
two rows of 20 wind turbines and having a thicker conductor running from two connected rows to
the substation. The 2nd
design has each row connected straight up to the substation. There are 2
main differences: 1st
design requires two types of wire (refer to Table 6 in the appendix) and three
circuit breakers on each line that runs into the substation, and 2nd
design requires only one type of
wires (first row of Table 6 in the appendix) for all the connections, but four circuit breakers are
required on each line that runs into the substation.
We have decided to go with the 1st
design because it is cheaper compared to the second design.
The total construction cost for the 1st
design is $4,073,913.56 with a total annualized cost of
$381,862.54 (this includes the annualized cost of equipment, cost of unreliability, and annual
energy loss). The 2nd
design costs more to construct. The total construction cost is $4,174,311.977
with a total annualized cost of $399,009.23. It is evident from these numbers that the 1st
design is
cheaper to build. This is mainly because the 1st
design requires shorter conductors which greatly
reduces the construction cost. The 1st
design requires approximately 22.6 km of conductors while
the 2nd
design requires approximately 25.75 km. Furthermore, the 1st
design requires only three
circuit breakers while the 2nd
design requires four circuit breakers on each line that runs to the
substation. Table 1 summarizes the cost comparison between the two designs.
1st
design 2nd
design Cost difference
Total Construction Cost $4,073,913.56 $4,174,311.977 ($100,398.417)
Annualized cost $198,582.72/year $202,385.42/year ($3,802.7)
Cost of unreliability $6,568.38 /year $7,484.25 /year ($915.87)
Annual energy loss $176,711.44/year $189,139.56/year ($12,428.12)
Total annualized cost $381,862.54/year $399,009.23/year ($17,146.69)
Table 1
Besides its cheaper overall cost, 1st
design is more favorable because it is more reliable. As shown
in Table 1, the cost of unreliability of the 1st
design is $6,568.38 /year while the cost of unreliability
of the 2nd
design is $7,484.25 /year. Although having four circuit breakers may seem to be more
reliable than just three, the length of conductors is a more important factor in this case. Having
longer conductors translates to more occurrences of fault, and thus increasing the expected outage

4. time. Having shorter conductors, however, is more reliable. The expected outage time (EOT) for
the 1st
design was calculated to be approximately 50.55 hours/year while the EOT for the 2nd
design
was calculated to be approximately 57.6 hours/year. Therefore, the 1st
design is more reliable.
Overhead vs underground
We have analyzed two designs in the previous section and justified that the first design is by far
the best option. In this section, we are comparing between overhead and underground
implementations of the 1st
design.
Overhead Underground Difference
Total Construction Cost $4,073,913.56 $16,236,483.391 ($12,162,569.83)
Annualized cost $198,582.72/year $216,501.29/year ($17,918.57)
Cost of unreliability $6,568.38 /year $5,254.70/year $1,313.68
Annual energy loss $176,711.44/year $176,711.44/year $0.00
Total Annualized cost $381,862.54/year $398,467.43/year ($16,605.03)
Table 2
Table 2 above summarizes the total construction and annualized cost for overhead and
underground implementations of the 1st
design. The total construction cost of underground lines is
significantly more expensive than overhead lines because underground conductors are more
expensive. The price of an overhead conductor is $1.62/lb. while the price of an underground
conductor is $8.46/lb. Furthermore, underground transmission lines require conduits. These
conduits are $55/foot. These prices contribute to high cost of underground lines construction. The
difference in annualized cost is mainly due to the lifetime of underground lines. The lifetime of
underground conductors is 20 years while the lifetime of overhead conductors is 40 years. This
means that underground lines will require more maintenance than overhead lines.
In terms of cost of unreliability, underground lines are more reliable than overhead lines.
According to Table 2 above, the cost difference in terms of unreliability is approximately
$1,313.68. Even though underground lines are proven to be more reliable, the cost difference in
terms of unreliability does not outweigh the difference in annualized cost which is approximately
$17,918.57. Thus, it is cheaper to go with overhead lines implementation of the 1st
design.
Note: The detailed calculation of cost, reliability, and energy lost can be found in the appendix

5. Reliability
Process
Reliability analysis is one of the significant parts because we have to make sure our project design
are able to deal with unpredictable things occur and consider how much potential money would
loss when the power output doesn’t achieve the ideal prediction. We have to know which model
has the less annual reliability cost in order to choose the best transmission circuit design. In this
process, we have to realize two parts. The first part is the value of the worst fault current occur in
each of the models, and the second part is the money loss because of some fault current occur and
normal power loss during the process of energy transmission.
In the first part, we have to compare the largest fault current—line to ground fault in these three
models. According to the cost sheet file, we know the per unit impedance of a transformer and a
generator in the base 100 MVA apparent power. Therefore, in order to find the fault current, we
have to convert all the per unit value into 31.579MVA (total power in one conductor line = 30MW
and power factor = 0.95). Next, we find the total line resistance in each conductor by consulting
the ACSR table. Finally, we can sum all the impedance and use the apparent power to calculate
line to ground fault current.
In the second case, we have to calculate and compare the annual unreliability cost of these three
models. In this process, we have to find the cost by total fault current (permanent and temporary),
the cost by permanent fault only. We have to find out the voltage drop, and power loss due to
current transmission in order to calculate the annual value loss.
Result:
Fault Current Analysis
1st
design overhead 2nd
design overhead 1st
design underground
Line 1 720 A 720 A 720 A
Line 2 720 A 720 A 720 A
Line 3 2629 A 707 A 2629 A
Line 4 2629 A 694 A 2629 A
Table 3
As we didn’t do any changing in Line 1 and Line 2 which are the two upper Lines connect to the
left and right of the substation, all the models supposed to receive at most 720A fault current in
each line. In overhead implementation of the 1st
design, we can see the way that we combine two
lines will have to be considered some of the impedance in parallel circuit. We calculated the total
impedance in this way will be less than the overhead implementations of the 2nd
design, which all
the conductors are lined to substation separately. Therefore, we expect the fault current of the 1st
design to be larger than the 2nd
design and we estimate the fault current in 1st
design to be four
times higher than 2nd
design. For underground implementations of the 1st
design, although we
change all the conductors in the 1st
design from overhead into underground, we use the same length
and size of aluminum to make the conductor. Hence, the fault current is the same as the 1st
design.

6. Unreliability Loss
Total energy loss
(MWh/year)
Total energy loss
due to permanent
fault
(MWh/year)
Voltage
Drop (V)
Power Loss
(MW)
1st
design overhead 1501 375 6227 1.15
2nd
design overhead 1710 427.7 7373 1.23
1st
design underground 300 300 6227 1.15
Table 4
Cost of Unreliability
Total fault
($/year)
Permanent fault
($/year)
Annual Value
Loss ($k/year)
1st
design overhead 8.758 6,568.38 176.7
2nd
design overhead 9.937 7,484.25 189.1
1st
design underground 1.752 5,254.70 176.7
Table 5
According to Table 4, the total energy loss in overhead implementations of 1st
and 2nd
design is
five times larger than the underground implementation of the 1st
design. The reason is there are no
temporary fault current occur in underground. Thus, we decided to build circuit breakers in each
of the conductors. As the circuit breakers are able to deal with the temporary fault current in a
very short period (around 1 minute), temporary fault current doesn’t seem affect the whole system
operation seriously. Thus, we can just compare the cost by permanent fault only.
According to Table 4, we can see that the way that combine line 3 and line 4 are able to reduce the
power by fault and the power loss during the normal operation as well. Also, the voltage drop of
the 1st
design is lower than the 2nd
design. Afterward, when we estimate the cost of these power
loss, we conclude that although the fault current will increase if we combine line 3 and line 4, we
still can save some money for the unreliability cost by fault current. Moreover, we can save more
than $10,000 in power loss during the normal operation. Finally, underground implementation
seems have better reliability, yet the difference in cost of unreliability does not seem to outweigh
the difference in annualized cost of the two designs.
Standards
Impact of Global Warming on our Design
Conclusion

7. Appendix
Conductor type Weight (lbs/mile) Current Carrying Capacity (A)
336400 cmils ACSR 2442 530
954000 cmils ACSR 6479 1010
Table 6
Ro
w
Dis
tan
ce
No.
of
pol
es
and
ins
ulat
or
Cost of
poles
and
insulato
r
A of
poles
and
insulat
or
XFMR
cost
A of a
XFMR
Price
of
condu
ctor
per lb
Conductor
cost for a
single
turbine
A of a
conducto
r
Connection
Cost for a
single turbine
Total A
1 &
4
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
1 13 $32,808 $1,419 $37,500 $1,913 $1.62 $7,417.575 $320.902 $77,725.975 $3,653.49
Total cost
for 3 phase
$943,084.68 $46,617.75
2 0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28

8. 0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
3.2 41
$103,74
9
$4,488 $37,500 $1,913 $1.62 $23,456.432
$1,014.7
81
$164,705.702 $7,416.44
Total cost
for 3 phase
$1,030,064.4
1
$50,380.70
3 0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
2.2 29 $73,362 $3,174 $37,500 $1,913 $1.62 $16,586.202 $717.559 $127,448.015 $5,804.59
Total cost
for 3 phase
$992,806.72 $48,768.84
Table 7
Overhead 1st
Design Cost Calculation

9. Ro
w
Dis
tan
ce
No.
of
pol
es
and
ins
ulat
or
Cost of
poles
and
insulato
r
A of
poles
and
insulat
or
XFMR
cost
A of a
XFMR
Price
of
condu
ctor
per lb
Conductor
cost for a
turbine
A of a
conductor
Connection
Cost for a
turbine Total A
1 &
4 0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
1 13 $32,808 $1,419 $37,500 $1,913 $1.62 $7,417.575 $320.902 $77,725.975 $3,653.49
Total cost
for 3 phase $943,084.68 $46,617.75
2 0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28

10. 0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
3.1
623 41
$103,74
9 $4,488 $37,500 $1,913 $1.62 $23,456.432 $1,014.781 $164,705.702 $7,416.44
Total cost
for 3 phase $1,030,064.41 $50,380.70
3 0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
0.2 3 $6,562 $284 $37,500 $1,913 $1.62 $1,483.515 $64.180 $45,545.195 $2,261.28
5.3
852 71
$176,67
9 $7,644 $37,500 $1,913 $1.62 $39,944.864 $1,728.110 $254,123.505 $11,284.87
Total cost
for 3 phase $1,119,482.21 $54,249.12
Table 8
Overhead 2nd
Design Cost Calculation

11. Row Distance
XFMR
cost
A of a
XMFR
Price of
conductor
per lb
Conductor
cost for a
turbine
A of
conductor
Cost of
conduits and
ditching per
km
Connection
Cost for a
turbine Total A
1&4 0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
1 $37,500 $1,913 $8.46 $38,736.225 $2,603.683 $180,446.200 $617,574.83 $4,516.90
Total cost for
3 phase $3,534,359.160 $50,762.12
2 0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96

12. 0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
3.2 $37,500 $1,913 $8.46 $122,494.699 $8,233.568 $180,446.200 $1,871,857.66 $10,146.79
Total cost for
3 phase $4,788,641.995 $56,392.01
3 0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
0.2 $37,500 $1,913 $8.46 $7,747.245 $520.737 $180,446.200 $153,514.97 $2,433.96
2.2 $37,500 $1,913 $8.46 $86,616.832 $5,822.012 $180,446.200 $1,334,586.74 $7,735.23
Total cost for
3 phase $4,251,371.076 $53,980.45
Table 9
Underground 1st
Design cost calculation

13. overhead
(permanent fault) length(m) length(mile)
EF
(faults/year) EOT (hours/year)
Production lost
(MWh/year)
Line 1 4800 2.9825808 1.78954848 2.68432272 26.57479493
Line 2 4800 2.9825808 1.78954848 2.68432272 26.57479493
Lines 3 & 4 (2lines
together) 9836 6.111805156 3.667083094 5.50062464 54.45618394
Lines 3 & 4 to sub 3162 1.964775102 1.178865061 1.768297592 17.50614616
Total production
lost (MWh/year) 375.3357599
cost of unreliability $6,568.38
Table 10
Overhead 1st Design Cost of unreliability calculation
overhead
(permanent fault) length(m) length(mile) EF(faults/year) EOT(hours/year)
Production Lost
(MWh/year)
Line 1 4800 2.9825808 1.78954848 2.68432272 26.57479493
Line 2 4800 2.9825808 1.78954848 2.68432272 26.57479493
Lines 3 & 4 (2lines
together) 6963 4.326606273 2.595963764 3.893945646 38.55006189
Lines 3 & 4 to sub 9186 5.707914006 3.424748404 5.137122605 50.85751379
Total Production lost
(MWh/year) 427.6714966
cost of unreliability $7,484.25
Table 11
Overhead 2ND Design Cost of unreliability calculation
Underground
(permanent fault) length(m) length(mile) EF(faults/year) EOT(hours/year)
Production
lost(MWh/year)
Line 1 4800 2.9825808 0.178954848 2.147458176 21.25983594
Line 2 4800 2.9825808 0.178954848 2.147458176 21.25983594
Lines 3 & 4 (2lines
together) 9836 6.111805156 0.366708309 4.400499712 43.56494715
Lines 3 & 4 to
substation 3162 1.964775102 0.117886506 1.414638073 14.00491693
Total production
lost(MWh/year) 300.2686079
cost of unreliability $5,254.70
Table 12
Underground 1st Design Cost of unreliability calculation