Glades Electric CooperativeInfrastructure

Miles of Line 2,213 Overhead Dist. 2,180 Underground Dist. 33 Transmission 87

16,402 meters Average 7 meters per mile of line

Glades Electric CooperativeMeters Served by County

Highlands 7,610 Okeechobee 2,190 Glades 3,197 Hendry 3,405

Total Meters 16,402

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 SupplyPower SupplySystem RestorationSystem Restoration

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 SupplyPower SupplySystem Restoration ScheduleSystem Restoration Schedule

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 SupplyPower SupplySystem RestorationSystem Restoration

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 SupplyPower SupplySystem Restoration ScheduleSystem 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 SupplyPower SupplySystem Restoration ScheduleSystem 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.

Power SupplyPower SupplySystem Restoration ScheduleSystem Restoration Schedule

Right of Way Trimming

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.

Category 1 consists of those items that must be

addressed prior to the next inspection. 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 SupplyPower SupplySystem Restoration ScheduleSystem 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 SupplyPower SupplySystem Restoration ScheduleSystem Restoration Schedule

Substation Major Maintenance & TestingThis program is performed on each station every four (4) years and includes the following:

Circuit Switcher:Power Factor (Doble) testClean & re-torque connectionsOperational CheckVoltage drop-open/closeVisual Inspection

Power SupplyPower SupplySystem Restoration ScheduleSystem Restoration Schedule

Transformer:

Power Factor (Doble) testClean & re-torque connectionsTurns Ratio Test (TTR)Dielectric Test OilDissolved Gas Analysis (DGA)*

*Performed annuallyCurrent Transformer (CT) testVisual Inspection

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Substation Major Maintenance & Substation Major Maintenance & TestingTesting

Surge Arrestors:Power Factor (Doble) testClean & re-torque connectionsVisual Inspection

Bus & Bus Insulators:Visual Inspection

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Substation Major Maintenance & Substation Major Maintenance & TestingTesting

Circuit Breakers: Power Factor (Doble) testClean & re-torque connectionsCurrent Transformer (CT) testTiming testContact Resistance test (Ductor)Dielectric Oil testHi-pot testOperational checkVisual Inspection

Power SupplyPower Supply

Substation Major Maintenance & Substation Major Maintenance & TestingTesting

Regulators:Power Factor (Doble) testClean & re-torque connectionsDielectric Oil testOperational checkVisual Inspection

Relays:Check settingsTestClean

Power SupplyPower Supply

Substation Major Maintenance & Substation Major Maintenance & TestingTesting

Transmission Upgrades

Relocated and Upgraded 4.4 miles of 69kV transmission line and distribution 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 fieldRequired specialized equipment during rainy season Difficult to patrol from roadwayServes 2 substations with approximately 2,178 meters

New Hensley – Hicpochee 69kV LineImproved accessImproved patrolling capabilityCurrent 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

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 1Area prone to floodingSpecialized equipment required during rainy season

New Morgan Henderson Circuit 1Increased distance from roadwayShorter span lengthsIncreased pole classification

New Morgan Henderson Circuit 1Improved accessibilityShorter span lengthsIncreased pole classification

Typical Regulator Installation Wind loading often exceeded pole capacity during hurricanesRegulators prone to being blown off platform during hurricanes

Platform Regulators Hurricane Wilma 2005

New Regulator InstallationsReduced wind loadingReduced equipment loss potential

Work in Progress

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

2009 Strategic Work Plan New Substation in Okeechobee New Double Circuit Distribution Line in

Okeechobee

Morris – Basinger 69kV LineApproximately 8 structures in retention pondRequires specialized equipmentExtended outage time if repairs are required in retention pond2,190 meters served

Hurricane Wilma 2005