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Brewster Division

Municipal Officials’

Meeting

April 2018

https://www.iberdrola.es/

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Table of Contents

Municipal Officials’ Meeting

Topic Slide

System Overview 3

NYSEG Reliability Targets 4

Major Contributing Causes 5-6

Vegetation Management 7-8

5 Year Trim Cycle 9-10

Worst Performing Circuits 11

Routine Maintenance Programs 12-17

2018 Automation Planned Work 18

2018 Resiliency Plan 19

Capital Improvements 20-24

Future Initiatives 25


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System Overview


New York State Electric & Gas serves 890,000 electric and 264,000 natural gas customers across

New York State

Brewster Region is 531 square miles and serves approximately 86,379 electric customers

The electrical system is comprised of; • 32 substations; 15 Transmission lines;

• 95 distribution circuits - 2,399 circuit miles,

(1,630 overhead miles, 769 underground miles)


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NYSEG Reliability Targets


2017 Customer Average Interruption Duration Index (CAIDI) target

• CAIDI is the average outage duration that a customer would experience. • CAIDI is calculated by taking the sum of all customer interruption durations and dividing it

by the total number of customer interruptions. • Brewster Division had a goal of 2.25 and ended the year at 1.86

2017 System Average Interruption Frequency Index (SAIFI) target

• SAIFI is the average number of sustained interruptions per consumer during the year. • SAIFI is calculated by taking the total number of customer interruptions and dividing it by

the total number of customers served. • Brewster Division had a goal of 1.70 and ended the year at 1.80


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Major Contributing Causes - Motor Vehicle Accidents


A major contributing cause of outages in 2017 is Motor Vehicle Accidents (3rd Party)—23.1 % of all interruptions


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Trees are one of the leading causes of power interruptions and power quality issues. NYSEG routinely prunes and removes trees under and adjacent to

power lines for both safety and reliability.

Vegetation Management


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• Brewster Division is on a 5 year trim cycle, and trees remain a leading cause of outages

49.1% Trees - 38% Out ROW / 11% In ROW

• Continued focus on specification enforcement and individual customer outreach

• Develop new partnership strategies with the communities to strengthen the Right Tree Right Place philosophy



0

5,000

10,000

15,000

20,000

25,000

30,000

35,000

40,000

45,000

Westchester Putnam Dutchess

Customers Served

Customers Served

0

50

100

150

200

250

300

350

400

450

Westchester Putnam Dutchess

Total Refusal Customers Per County

Total RefusalCustomers




• Right Tree Right Place philosophy sharing

• Tree planting guidance and awareness • NYDEC- Cost Share Grants for New

Plantings: • http://www.dec.ny.gov/lands/49

57.html • USDA Natural Resources Conservation

Service • Tree City USA

Why are trees the top cause of outages and interruptions if we’re on cycle?

One refusal has an impact on numerous customers and potentially causing impact to several towns at the same time Improper clearance leads to vegetative growth contact prior to the next scheduled maintenance year Overly mature tree population coupled with granite bedrock leads to more tree failure and uprooting Emerald Ash Borer is here and will continue to have a significant impact on safety and reliability in years to come.

Refusal to trim or cut trees affects customers impacted: 49.1% of outages are caused by trees


http://www.dec.ny.gov/lands/4957.html





5 Year Trim Cycle – Substation, Circuits

2016 2017 2018 2019 2020

Total Trim Mileage=1630 271.02 277.7 364.5 369.5 347.54

Adams Corners 411 Cantitoe 282 Amenia 153 Adams Corner 412 Amawalk 449/451/454

Adams Corners 413 CHU-Long MT Rd Bedford Hills 462 Amenia 154 Bedford Hills 227

Amawalk 453

CHU-Pleasant Ridge Rd Crafts 424 Bedford Hills 225 Cantitoe 283

Cantitoe 497 CHU-Separate Rd Cross River 469 Bedford Hills 463 Cantitoe 498

Carmel 501 CHU-White Pond Rd Cross River 470 Dingle Ridge 277 CHU-Chapman Rd

Carmel 502 Crafts 422 Goldens Bridge 417 Goldens Bridge 418 CHU-Long Hill Rd

Carmel 503 Crafts 423 Goldens Bridge 420 Haviland Hollow 426 CHU-Sylvan Beach Rd

CHU-RT 301 Croton Falls 446 Goldens Bridge 421 Mohansic 404 CHU-Tower Hill Rd

Croton Falls 514 Dover Plains 494 Kent 176 Mohansic 405 Cross River 468

Pawling 166 Pawling 509 Kent 526 Mohansic 406 Croton Falls 515/516

Pawling 508 Pound Ridge 456 Peach Lake 249 Peach Lake 250 Dingle Ridge 278

Pound Ridge 457 Putnam Lake 485 Putnam Lake 486 Sylvan Lake 478 Golden Bridge 414

Tilly Foster 439 Tilly Foster 437 Sylvan Lake 481 Sylvan Lake 480 Harlem Valley 105

Tilly Foster 438 Teakettle Spout 489 Ten Mile River 443 Haviland Hollow 427

Tilly Foster 441 Union Valley 431 Ten Mile River 444 Katonah 448/450/452

Tilly Foster 442 Union Valley 432 West Patterson 474 Kent 175

Union Valley 433 Kent Cliffs 291/292

West Patterson 475 Monhansic 403

Pawling 165

Pound Ridge 455/458

Putnam Lake 484

Streetlight_11 STI Teakettle Spout 490/491


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2016 2017 2018 2019 2020

Dutchess County

Dover Dover Amenia Amenia Beekman

Pawling Pawling Beekman Beekman Dover

Dover Dover Pawling

Putnam County

Brewster Brewster Carmel Brewster Kent

Carmel Carmel Kent Patterson Mahopac

Mahopac Mahopac Mahopac Putnam Valley Patterson

Putnam Valley Putnam Valley Patterson Southeast Putnam Valley

Southeast

Westchester County

Bedford Bedford Bedford Bedford Bedford

North Salem Somers Lewisboro North Salem Lewisboro

Pound Ridge North Salem Yorktown North Salem

Somers Pound Ridge Pound Ridge

Somers Somers

Yorktown

5 Year Trim Cycle – County, Town



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Worst performing circuits 2016 and 2017


2016 Substation - Circuit Major Cause(s) Solution

Cantitoe 497 Tree Outside of ROW, Tree Inside of ROW Trimmed late 2016

Carmel 501 MVA's/ Carmel substation fire Breakers replaced post fire

Crafts 423 Tree Outside of ROW, Tree Inside of ROW Trimmed late 2017

Pound Ridge 455 Tree Outside of ROW, Tree Inside of ROW Extensive trim post storm Riley/Quinn

Union Valley 433 Operational Errors Review relay settings and implement upgrades

2017 Substation - Circuit Major Cause(s) Solution

Adams Corners 411 Tree Outside ROW, Equipment Failure (substation breaker failure)

Station Breaker replaced 2017, 4 new reclosers to be installed, 3 communication upgrades to reclosers 2018

Crafts 423 Tree Outside ROW, Tree Inside of ROW

Trimmed late 2017 with invasive vine focus, 2 new reclosers to be installed, 1 communication upgrade to reclosers, settings changes to reclosers 2018

Crafts 424 Tree Outside ROW, Tree Inside of ROW

New fusing to truncate outage zone in tree prone area 2017, 2 new reclosers to be installed, 2 communication upgrades to reclosers 2018

Goldens Bridge 414 MVA's/ Tree Outside ROW 2 new reclosers to be installed 2018

Sylvan Lake 478 Tree Outside ROW, Lightning Substation Breaker replacement (new communication) 2018, 7 new reclosers to be installed 2018


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Routine Maintenance Programs

Distribution Infrared Program Stray Voltage Transmission Infrared Inspection via

Helicopter

Year/Units # Circuits (% of Total Circuits) Units # Circuits (% of Total Lines)

2016 50 (53%) 21,888 15 (100%)

2017 50 (53%) 16,995 15 (100%)

2018 50 (53%) 19,625 15 (100%)

Distribution and Transmission Inspection Programs: • Transmission Wood Pole and Above Ground Inspections on a 10 yr cycle based on industry best practice for this type of wood

pole maintenance. • Distribution and Transmission line inspections on equipment are on a 5 yr cycle based on industry best practice

Distribution and Transmission Substation Programs (Annually): • Substation Battery Maintenance • Transformer Oil Analysis • Infrared Substation Equipment Testing • Comprehensive Substation Inspection (bi-monthly) • Vegetation Abatement

Additional Substation Programs (Doble Testing) • Distribution Type Transformers on a 12 year cycle based on industry best practice- 2 this year • Substation Circuit Breakers on a 6 year cycle based on industry best practice - 27 this year • Transmission Type Transformers on a 6 year cycle based on industry best practice – 6 this year




Routine Maintenance Programs and Immediate Impact

2017 Brewster Avoided Outages


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2018 Transmission Maintenance Work - Replacements

Towns Crossarms Insulators Poles

Amenia 12

16

Bedford 40

Carmel 13 10 20

Dover 10

6

Kent 2

Lewisboro 58

3

North Salem 20 1 9

Patterson 20 9 2

Pawling 9 16 1

Pound Ridge 27

2

Putnam Valley 4

Somers

2

Southeast 17 2 13

Total 232 40 72


813L South Rd. Pawling

803L Magnetic Mine Rd. Southeast


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2018 Distribution Maintenance Work – Repair/Replace


TOWNS CONDUCTOR CUT OUT GROUNDS GUY WIRE

HAND HOLE INSULATOR LA POLE PRI RISER

SECONDARY/SERVICE TRANSFORMER XARM

BEDFORD 3 2 1 5 8 1

BEEKMAN 1

CARMEL 2 5 6 1 25 51 1 2 5 6

DOVER 40 4 1 7 1 1 2 5

KENT 3 6 11 8 36 3 5

LEWISBORO 8 3 11 21 6 2 19 15 1 3 6 6

NORTH SALEM 1 2 3 6 2 1 2

PATTERSON 3 3 3 1 2 2

PAWLING 2 1 49 16 2 15 1 1 1

POUNDRIDGE 2 12 10 1 22 10 2 2 3 3

PUTNAM VALLLEY 1 9 2 21 2

SOMERS 1 4 4 1 4 22 2 6 4

SOUTHEAST 1 4 3 3

YORKTOWN 1 7 7 4 26 3 9

Total 22 9 142 99 6 13 117 198 7 13 24 46


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2018 Substation Distribution Maintenance Work


Substation Name Circuit Breaker Carmel CARMEL-99202

Croton Falls CROTON FALLS-2B-52

Croton Falls CROTON FALLS-44652









Croton Falls CROTON FALLS-T5-52

Croton Falls CROTON FALLS-T6-52

Golden Bridge GOLDEN BRIDGE-1B-42

Golden Bridge GOLDEN BRIDGE-2B-42

Golden Bridge GOLDEN BRIDGE-41642






Golden Bridge GOLDEN BRIDGE-T2-42

Kent Cliffs KENT CLIFFS-29182

Kent Cliffs KENT CLIFFS-29282

Sylvan Lake SYLVAN LAKE-47812



•Substation Automation

We are performing upgrades in the automation system of the following substations. These upgrades will provide more visibility of the stations to the SCADA system. The following substation upgrades will be completed in 2018.

a.Kent Cliffs b.Putnam Lake c.Cantitoe

d.Amawalk

•Breaker Replacement

The followings breakers in the table to the right are scheduled to be replaced in the Brewster division.

• Amenia - substation rebuild

1. Install a new substation transformer 2. Low-side medium voltage GIS 3. Low-side capacitor bank and accompanying

equipment 4. Convert 10 miles of 4.8kV circuits 153 & 154 to

13.2kV.


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2018 Transmission Substation Maintenance Work


• Pawling – 115 kV Capacitor Bank Installation • Dover – 46 kV Capacitor Bank Installation • Croton Falls - Oil Breaker Replacement of all 46 kV and one 115 kV • Carmel – 115 kV Oil Breaker Replacement • Carmel – Finish the transmission line 807 Project – Upgrade from 46 kV to 115 kV • Ten Mille River – New breakers installation for MTA


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2018 Automation Planned Work


Towns Capacitors Regulators Reclosers

Amenia 4

Bedford 1 4

Beekman 1 11

Brewster Village

Carmel 12

Dover 1 2

Katonah 1

Kent 2 3

Lewisboro 2 4

North Salem 3 5

Patterson 6

Pawling 2 7

Poundridge 7

Putnam Valley 3 14

Somers 7

Southeast 3

Yorktown 3 1 1

TOTAL 8 15 87

Automation of capacitors and regulators provide better voltage regulation.

Automation of reclosers provide reduced outage durations, through remote

switching capabilities.


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2018 Resiliency Plan


Distribution System: Four areas of Focus

• Poles - Install class 3 poles

• Conductor – Install Poly Coated Conductor/ Spacer Cable/Aerial Bundled Cable • • Hardware – Install 3/8” guy wire, Vise top insulators

• System protection - Install fuses or cutouts on all transformer installations

Note: Poles, Conductor and System Protection focus areas have been implemented

in the Brewster division for several years. Poly coated wire and 3/8” guy wire has been used for years.


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Underground Capital Improvements


2018 2019 2020 2021 2022

Replace 30 Junction cabinets

Replace 2 Junction cabinets

Replace 8 Single Phase Transformers

Replace .5 Miles of primary underground on Golden Bridge 420

Replace 1.7 Miles of primary underground on Croton Falls 516



Inject .75 Miles of 3 Phase Primary on the Teakettle 490

Replace .6 Miles of primary underground on Croton Falls 514

Replace 2 Switch Gears

Replace 1 Mile of primary underground on Croton Falls 514

Replace 1 Mile of primary underground on Golden Bridge 420

Subdivisions with Underground Improvement Plan • Heritage Hills • Wild Oaks • Dalton Farms • Oakridge • The Willows • Chelsea Cove • Greenbriar • Primrose Farms • Fox Run • Indian Hill


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Capital 5 Year Plan


NYSEG

Project Title: Dingle Ridge – 2nd Bank and 13.2kV Conversion

Line of Business: Electric

Responsible Group: Projects

Investment Classification: System Capacity

Project Sponsor: Distribution Planning

Total Project Cost: $12,712,918

Project Description: Dingle Ridge – Upgrade the current 5MVA bank substation to a new Greenfield substation with 2 –

transformer banks. Convert 9.6 miles of 4.8KV circuits 277 and 278 to 13.2kV.

2013 2014 2015 2016 2017

$0 $37,710 $157,876 $273,408 $569,812

2018 2019 2020 2021 2022

$1,311,963 $10,362,149 $0 $0 $0


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Capital 5 Year Plan


NYSEG

Project Title: Line 807 115kV Conversion Project



Investment Classification: Reliability Risk

Project Sponsor: System Planning


Project Description: Convert the existing Carmel to Wood Street to Katonah Line #807 from 46kV to 115kV operation. This line

is already constructed to 115kV standards; therefore, the project is primarily substation modifications. A

new 115kV line terminal and two new 115kV breakers will be added at Carmel Substation, two new 115kV

line terminals will be added at Wood Street Substation, and a new 115kV line terminal and three new 115kV

breakers will be added at Katonah Substation.

2013 2014 2015 2016 2017

$6,760,174 $2,646,423 $4,413,869 $1,845,198 $2,903,847

2018 2019 2020 2021 2022

$3,571,721 $464,543 $0 $0 $0


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Capital 5 Year Plan


NYSEG

Project Title: North Brewster Reinforcement



Investment Classification: Mandatory

Project Sponsor: Business Development


Project Description: At Amenia Substation, the project will install 1 – 46/13.2kV, transformer & accompanying equipment and

convert 10 miles of the existing 4.8 kV circuits 153 and 154 to 13.2 kV. At Dover Plains Substation, the

project will install 2 – 46kV capacitor banks and accompanying equipment. At Pawling Substation, the

project will install 2 – 115kV capacitor banks and accompanying equipment.

2013 2014 2015 2016 2017

$0 $0 $0 $44,107 $2,505,050

2018 2019 2020 2021 2022

$11,440,658 $4,585,191 $0 $0 $0


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Capital 5 Year Plan


NYSEG

Project Title: Pawling-Ten Mile River New 115kV Line (Line 825 Rebuild)



Investment Classification: Reliability Risk

Project Sponsor: System Planning


Project Description: Build a 115kV line from Pawling to the vicinity of Ten Mile River Sub.

2013 2014 2015 2016 2017

$0 $0 $0 $0 $0

2018 2019 2020 2021 2022 Beyond 2022

$0 $0 $3,160,500 $3,160,500 $6,321,000 $18,963,000


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Future Initiatives


LED Street lighting

• Municipalities have been notified of the PSC approval of our tariffs for implementation of converting cobra head style streetlights to LEDs

• NYSEG filed specific LED street lights for approval by the PSC. Approval expected 7/2018

• Pending PSC approval of specific LEDs, lights will be ordered and conversions will be scheduled with participating municipalities.

• Municipalities are being scheduled based upon when they committed to the conversion and geographical considerations.

• Installation of lights will start in 7/2018

• 4 responses from the Brewster area: Lewisboro, Southeast, Patterson and North Salem.

NY Advanced Metering Infrastructure (AMI) (Smart Meters)

• Maine (100%) • CT (64%) • NY (Pending approval from NYPSC)

‾NYSEG & RG&E submitted a filing with the NYPSC for AMI deployment in 2018-2022 of 1.8 million electric and gas meter installations in NY ‾~$500M investment


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Questions?



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