CLECO POWER, LLC
TRANSMISSION SERVICE FACILITIES STUDY
OASIS REQUEST 73408102
FOR
CLECO POWER LLC, WHOLESALE ENERGY SERVICES
OASIS 73408102
Facilities Study
TABLE OF CONTENTS
1. PROJECT SUMMARY
3
1.1. Background and Project Need
3
1.2. Scope Summary
3
1.3. Summary of Work to Be Performed
3
1.4. Cost Summary
3
1.5. Schedule Summary
4
2. SAFETY REQUIREMENTS
4
3. GENERAL ASSUMPTIONS
4
4. SCOPE OF WORK
5
4.1. Substations
5
4.1.1. IP Mansfield
5
4.1.2. Mansfield
6
4.2. Lines
4.2.1. Mansfield – IP Mansfield
6
6
5. COST
7
6. SCHEDULE
7
6.1. IP Mansfield Substation Additions
7
6.2. Procurement of Property Adjacent to Mansfield Substation
7
6.3. Engineer and Procure Material and Equipment
8
6.4. Construction
8
7. COST AND SCHEDULE RISK ASSESSMENT
8
8. STUDY QUEUE
8
9. ATTACHMENTS
A. IP Mansfield
9
B. Mansfield
10
Issued by: Transmission Services
Issued on: February 16, 2010
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OASIS 73408102
Facilities Study
1. PROJECT SUMMARY
1.1. Background and Project Need
A System Impact Study was performed to determine the availability of
transfer capability across Cleco Power LLC’s Transmission System to
accommodate OASIS Request 739408102 for 2.8MW of yearly Network
Integration Transmission Service (“NITS”) beginning April 1, 2010 up to
25MW of NITS ending January 1, 2019.
Cleco Power Wholesale Energy Services (“Transmission Customer”) is
requesting to interconnect a new 138kV interconnection to the IP Mansfield
substation on the Cleco Power Transmission System.
1.2. Scope Summary
The System Impact Study identified transmission constraints occurring
between the Mansfield and Wallace Lake substations. Based upon the
application for the OASIS request this is expected to occur in 2014.
The limiting element is the IP Mansfield - Mansfield 138kV line for loss of
the Dolet Hills - Southwest Shreveport 345kV line. The addition of a 6Ω
reactor in series with the IP Mansfield - Mansfield line is required to reduce
the flows below 100% for the stated contingency.
The need for these facilities will be re-studied during the fall of 2012.
1.3. Summary of Work to Be Performed
Construct facilities within the IP Mansfield substation to provide an
interconnection point for the new Transmission Customer 138kV line.
Acquire property and construct facilities necessary for the installation of a
6Ω reactor at the Mansfield substation. The line relay panel at the IP
Mansfield substation will need to be replaced in conjunction with the reactor
installation at the Mansfield substation.
1.4. Cost Summary
The estimated cost of the initially required facilities at the IP Mansfield
substation is $26,000. The only includes the bus extension. The
Transmission Customer is responsible for this cost.
Issued by: Transmission Services
Issued on: February 16, 2010
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Facilities Study
The estimated cost of the line relaying replacement at the IP Mansfield
substation required in conjunction with the reactor installation at the
Mansfield substation is $60,000. Cleco Power is responsible for this cost.
The estimated cost for the additions to the Mansfield substation to
accommodate the 6Ω reactors and associated equipment is $2,981,000.
Cleco Power is responsible for this cost.
No cost estimate has been made for any facilities beyond the bus extension
since these facilities are the responsibility of Transmission Customer.
1.5. Schedule Summary
The requested in-service date is April 1, 2010. This date is not achievable.
It is estimated that the work within the IP Mansfield substation could be
completed within three (3) months of project authorization.
The reactor addition at the Mansfield substation is not required to be in
service until the end of 2013. Property acquisition, engineering, and
equipment procurement would begin in early 2013 to meet the end of year
completion date.
2. SAFETY REQUIREMENTS
Safety is a priority with Cleco Power and safety will be designed into all substations
and lines. All facilities will be designed with the utmost safety for personnel in mind
for construction, operation, and maintenance of the equipment.
All employees working directly or indirectly for Cleco Power shall adhere to all rules
and regulations outlined within the Cleco Power’s Safety Manual. Cleco Power
requires safety to be the highest priority for all projects and all company and contract
employees must follow all applicable safe work procedures.
3. GENERAL ASSUMPTIONS
It is assumed that a minimal amount of time will be required by Transmission
Customer to approve this project which would enable Cleco Power to proceed with
the necessary tasks as defined in the Scope of Work and be able to complete the
project as per the schedule described below.
Assumptions have been made in developing estimates without performing site visits,
surveys, and soil borings. During the preliminary engineering phase these tasks will
be completed and could have an impact on estimates and schedule.
Issued by: Transmission Services
Issued on: February 16, 2010
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OASIS 73408102
Facilities Study
All costs above represent good faith estimates in today’s dollars and are based on
existing data and could change considerably after detailed engineering analysis.
Price escalation for work in future years has not been included.
4. SCOPE OF WORK
4.1. Substations
4.1.1. IP Mansfield
The substation is located within the International Paper plant site and
servitude was granted to Cleco Power for the substation. Transmission
Customer is required to obtain permission from the mill to locate their new
facilities within the substation.
Cleco Power will own and maintain the short bus extension as well as the
new meters. Transmission Customer will be responsible for the
engineering, procurement, construction, ownership, and maintenance of
all other facilities.
General
Extend the main bus to accommodate a new terminal. Transmission
Customer will be required to install a 2000A disconnect switch, switch
stand and a 2000A gas circuit breaker. Transmission Customer will also
be required to install appropriate grounding and extend the duct system to
accommodate the new GCB as well as perform necessary site work.
Relaying
Transmission Customer will be required to install Cleco Power approved
step distance line relaying for the line.
Cleco Power will incorporate the GCB into the existing bus differential
scheme.
When the reactor is installed at the Mansfield substation the existing line
relay panel associated with the Mansfield-IP Mansfield line will need to be
replaced with advanced relays required to provide line protection with and
without the reactor in service.
Metering
Cleco will install high accuracy four quadrant meters for delivery point
metering.
Transmission Customer will be required to incorporate high accuracy
metering CTs in the GCB.
High accuracy metering PTs are already in place
Issued by: Transmission Services
Issued on: February 16, 2010
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OASIS 73408102
Facilities Study
SCADA
A RTU is already located at this substation.
All communications circuits are already in place.
4.1.2. Mansfield
Cleco Power will engineer, procure, construct, own, and maintain the new
facilities associated with the reactor installation.
General
Purchase approximately three (3) acres of property adjacent to the
substation
Perform site work and install fencing
Extend the ground grid
Extend the cable duct system
Install a new dead end tower for the IP Mansfield line
Install new bussing to accommodate the reactor
Install a 6Ω 1200A reactor
Install six (6) 2000A disconnect switches and switch stand
Install two (2) 2000A gas circuit breakers
Install appropriate grounding and duct system to accommodate the GCB
Install three (3) high capacitance CCVTs on the IP Mansfield line
Move the carrier relaying CCVT and wavetrap to the new line termination,
location.
Relaying
Move the existing line relay panel from the present circuit breaker to the
new gas circuit breaker.
Install a bus differential panel to protect the reactor and associated circuit
breakers and bus.
Install necessary control cable
Metering
None needed
SCADA
Connect control and indication for new GCBs to the existing RTU
4.2. Transmission Lines
4.2.1. Mansfield - IP Mansfield
General
In 2013, dead end the line on the new dead end tower at the Mansfield
substation and jumper to the reactor bus.
Issued by: Transmission Services
Issued on: February 16, 2010
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Facilities Study
5. COST
IP Mansfield Substation (initial)
Cost Item
Bus extension
Metering
Engineering review
Total
Estimated Cost (installed)
$10,000
$10,000
$6,000
$26,000
The Transmission Customer is responsible for this cost. All other facilities located
beyond the bus extension at this location are the sole responsibility of the
Transmission Customer.
IP Mansfield Substation (2013)
Cost Item
Line relay panel installed
Estimated Cost (installed)
$60,000
Cleco Power is responsible for this cost.
Mansfield Substation (2013)
Cost Item
Property and site work
Engineering, material and labor
Total
Estimated Cost (installed)
$400,000
$2,581,000
$2,981,000
Cleco Power is responsible for this cost.
6. SCHEDULE
6.1. IP Mansfield Substation Additions
It is estimated that within three (3) months of authorization, Cleco Power can
extend the bus and have the new meters installed and be ready for service.
This schedule assumes that outages can be obtained from the mill and on the
Wallace Lake line.
6.2. Procurement of Property Adjacent to Mansfield Substation
Procurement of the property adjacent to the substation would begin in early
2013 and would be completed by mid-year.
Issued by: Transmission Services
Issued on: February 16, 2010
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OASIS 73408102
Facilities Study
6.3. Engineer and Procure Material and Equipment at the Mansfield Substation
This phase would also begin in early 2013 and be completed by mid-year.
6.4. Construction at the Mansfield Substation
Site work and construction would begin late summer 2013 and be completed
prior to the end of the year.
7. COST AND SCHEDULE RISK ASSESSMENT
Risk
Material/equipment
Contractor labor
Comment
Increase in cost of steel and
aluminum
Increase in labor cost
Permitting
Wetlands and other permitting
Outages
Delay in obtaining an outage
from the mill and on the Wallace
Lake line to extend the bus
Obtaining servitude from the mill
to add additional facilities at the
IP Mansfield substation
Servitude
Impact
Could significantly affect
cost estimates
Could moderately affect
cost estimates
Could significantly affect
cost and schedule
Could significantly affect
schedule
Could prevent the new
delivery point from being
established at this location
8. STUDY QUEUE
OASIS No.
71847922
71956063
72310136
72805097
1352934
73436331
72981623
Issued by: Transmission Services
Issued on: February 16, 2010
MW
162
203
580
45
54
25
75
Begin
04/01/2009
10/01/2008
01/01/2010
03/01/2010
06/01/2010
01/01/2010
01/01/2010
End
12/31/2018
10/01/2020
01/10/2040
01/01/2041
06/01/2015
01/01/2011
01/01/2020
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OASIS 73408102
Facilities Study
ATTACHMENT A
Issued by: Transmission Services
Issued on: February 16, 2010
Page 9
OASIS 73408102
Facilities Study
ATTACHMENT B
Issued by: Transmission Services
Issued on: February 16, 2010
Page 10