Transcript Presentation by Glades Electric Cooperative

Glades Electric Cooperative
Infrastructure
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Miles of Line
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2,213
Overhead Dist.
2,180
Underground Dist.
33
Transmission
87
16,402 meters
Average 7 meters per mile of line
Glades Electric Cooperative
Meters Served by County
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Highlands
Okeechobee
Glades
Hendry
7,610
2,190
3,197
3,405
Total Meters
16,402
Power Supply
System Restoration
The System Restoration Program (SRP) at GEC is utilized to maintain
our Distribution and Transmission Systems as well as Substations.
This program includes all elements of system maintenance. The
program specifically addresses poles and structures, conductors,
grounding, guying and inspection. Additionally the SRP includes
testing, maintenance and inspection of substations.
Power Supply
System Restoration Schedule
The SRP was established to ensure that each and every mainline
section undergoes system restoration within approximately an 8
year period. Work is divided such that approximately 1/8 of the
circuits are worked each year.
 Phase 1 restoration (Mainline) focuses on 3 Ø line sections that are
connected directly to the supplying substation. Sections of those
circuits that are downstream of three Ø or single Ø line breakers, are
considered part of the mainline.
 Phase 2 focuses on sections of the circuit that are fused, regardless
of the number of phases, are generally considered to be taps.
Any exceptions regarding the sections of circuits included
in each phase will be handled on an individual basis.
Power Supply
System Restoration
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Poles/structures
Guys & Attachments
Cross Arms
Insulators
Switches/Fused Switches
Surge Arrestors
Transformers
Capacitors
Right of Way
Line Breakers (OCR’s)
Line Regulators
Substations
Code Violations
Power Supply
System Restoration Schedule
Line Breakers (OCR’s):
Line breakers are addressed in the Oil Circuit Breaker
Change-Out Program. Under this program, each OCR is
replaced with a new/rebuilt Oil Circuit Breaker every five
(5) years.
Power Supply
System Restoration Schedule
Line Regulators
Line regulators are addressed in the Regulator
Maintenance Program. Under this program, each
regulator is maintained and tested every four (4) years.
Additionally, each line regulator is inspected and
operationally checked every quarter.
Power Supply
System Restoration Schedule
Right of Way Trimming
Vegetation management on the GEC system is
completed, by circuit, at a fixed cost to GEC. All GEC
circuits are trimmed within a three year cycle.
Right of Way Trimming
Power Supply
System Restoration Schedule
Transmission System Program
Each transmission line is aerially inspected on an annual
basis. Items that are identified during this inspection are
classified into two categories.
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Category 1 consists of those items that must be
addressed prior to the next inspection.
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Category 2 items are less critical and are recorded on
the inspection form for future reference. Items in this
category are given special attention during subsequent
inspections and are corrected as required.
Power Supply
System Restoration Schedule
Substation Program
Substations are inspected two (2) times per month. One
inspection is a visual inspection of the overall facility; the
other inspection includes operational checks of
equipment. Substation batteries are tested quarterly.
Problems encountered or observed in any of these
inspections are budgeted, scheduled and corrected.
Problems that are deemed critical are corrected
immediately.
Power Supply
System Restoration Schedule
Substation Major Maintenance & Testing
This program is performed on each station every four (4)
years and includes the following:
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Circuit Switcher:
Power Factor (Doble) test
Clean & re-torque connections
Operational Check
Voltage drop-open/close
Visual Inspection
Power Supply
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Substation Major Maintenance &
Testing
Transformer:
Power Factor (Doble) test
Clean & re-torque connections
Turns Ratio Test (TTR)
Dielectric Test Oil
Dissolved Gas Analysis (DGA)*
*Performed annually
Current Transformer (CT) test
Visual Inspection
Power Supply
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Substation Major Maintenance &
Testing
Surge Arrestors:
Power Factor (Doble) test
Clean & re-torque connections
Visual Inspection
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Bus & Bus Insulators:
Visual Inspection
Power Supply
Substation Major Maintenance &
Testing
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Circuit Breakers:
Power Factor (Doble) test
Clean & re-torque connections
Current Transformer (CT) test
Timing test
Contact Resistance test (Ductor)
Dielectric Oil test
Hi-pot test
Operational check
Visual Inspection
Power Supply
Substation Major Maintenance &
Testing
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Regulators:
Power Factor (Doble) test
Clean & re-torque connections
Dielectric Oil test
Operational check
Visual Inspection
Relays:
Check settings
Test
Clean
Transmission Upgrades
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Relocated and Upgraded 4.4 miles of 69kV
transmission line and distribution
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Improved access
Improved sectionalizing
Upgraded line capacity
Upgraded storm strengthening
Relocated existing distribution circuit as
underbuild on transmission structures
Total cost of project $1.7 million
Old Hicpochee – Hensley 69kv line in cane field
Required specialized equipment during rainy season
Difficult to patrol from roadway
Serves 2 substations with approximately 2,178 meters
New Hensley – Hicpochee 69kV Line
Improved access
Improved patrolling capability
Current wind loading and construction standards
Relocated distribution circuit from east side of road to transmission
right of way
New Hensley – Hicpochee 69kV Line
Distribution Upgrades
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Major maintenance on 23.5 miles on three
distribution circuits
Complete circuit rebuild approximately 6.8
miles
Rebuilt regulator banks for higher wind
resistance
Trimmed 721 miles of distribution ROW
Old Morgan Henderson Circuit 1
Old Morgan Henderson Circuit 1
Area prone to flooding
Specialized equipment required during rainy season
New Morgan Henderson Circuit 1
Increased distance from roadway
Shorter span lengths
Increased pole classification
New Morgan Henderson Circuit 1
Improved accessibility
Shorter span lengths
Increased pole classification
Typical Regulator Installation
Wind loading often exceeded pole capacity during hurricanes
Regulators prone to being blown off platform during hurricanes
Platform Regulators Hurricane Wilma 2005
New Regulator Installations
Reduced wind loading
Reduced equipment loss potential
Work in Progress
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2009 Strategic Work Plan
New Substation in Okeechobee
New Double Circuit Distribution Line in
Okeechobee
2009 Strategic Work Plan
2009 Strategic Work Plan
2009 Strategic Work Plan
Work in Progress
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2009 Strategic Work Plan
New Substation in Okeechobee
New Double Circuit Distribution Line in
Okeechobee
Morris – Basinger 69kV Line
Approximately 8 structures in retention pond
Requires specialized equipment
Extended outage time if repairs are required in retention pond
2,190 meters served
Hurricane Wilma 2005