DANVERS ELECTRIC DIVISION

Presented by: Hamid Jaffari, Director of Engineering and Operations

Overall Short -Term / Long -Term Planning Objectives

Long-term Reliability Goals: (0-25 years)• Provide adequate substation capacity to support town load• Provide redundancy for all substations• Replace all open wires & bundled cables with Hendrix wires

Short-term Reliability Goals: (0-10 years)• Create engineering grade GIS System• Utilizing GIS, develop short/long term design plans• Provide proper protection and coordination of system protective

devices (i.e. Relays, Reclosers, Interrupters, Fuses, etc)• Back-up stranded loads (Folly Hill, Elliot street, Locust Street,

Summer street)• Upgrade substation underground getaways (Pond, Conant,

Hylands, etc)• Establish system wide power factor correction

23kV Supply Loop

Major Reliability Projects Completed

Year Project Cost

1996 4th Feeder 23 kV Construction $1,200,000

1997Preliminary Reliability Design and Initial

Development of GIS $850,000

1998 SCADA System $240,787

1999 North Street 23 kV Conversion $10,313

2000 S. Danvers Sub 42 & N Line Tap  $1,692,018

2000 Summer Street 23 kV Conversion $343,526

2002 5th Feeder 23kV & 5kV $1,248,394

2003 Pond Street Substation Expansion $1,199,090

2005 Conant East & Elliott St. 23kV & 5kv  $1,000,155

2005 GIS & SCADA Upgrade $102,000

2006/082007/2008

Cabot RD SubstationStation 39 Construction

$3,500,000$70,000

  TOTAL COSTS: $11,456,283

Other Reliability Projects Completed

Upgraded Underground Utilities (2000-2005) Highland substation getaways Pond street substation getaways Conant street substation getaways Treetops underground distribution Schools underground services

Retired antiquated substations (1999-2001) Adams Street Burroughs Street

Upgraded 5 kV circuit backbones (2000-2008) Pickering street, Beaver Park, Summer street Worthington street Center street, Dayton Street, and West Street Pine Street Elliot Street Conant Street Liberty Street Burley St Foster St Cabot Rd RR R.O.W from Chestnut St to High School

Other Reliability Projects Completed

Upgraded secondary services & connections

Balanced load on 23 kV & 4.16 kV feeders

Installed 23 kV/4.16 kV step-down Xfmrs for stranded loads Seneca Dr/Lobao Dr/Strawberry Hill Lane Locust street beyond North Street Newbury Street extension Nike Site Elliot Street Folly Hill area Priston St Dayton Street Armory Rd

Installed 23 kV ckts New 2355 Feeder form sub 42 to Cherry Hill Summer Street North Street Burley St Cabot Rd

Constructed New 23 kV/ 4.16 Cabot Rd Substation

Reliability Programs - Finite

• Open Wire/Bundled Cable Replacement Program:

Replaced/Installed since 2000 Remaining:

5kV along 5th Feeder route miles 6.2 mi. 3-phase open wire 21.2 mi

Dayton/Green/Centre Streets 2.4 mi. Bundled cable 17 mi

Pine Street 1.5 mi. Total 38.2 mi

Pickering Ckt/Summer/North 3.8 mi

5 kV & 23 kV along Cabot & Burely-S3 CKT 2.4 mil

5 kV Cabot Rd to Chestnut St 0.7 mi

5 kV Cabot Rd to Cole Rd 0.6 mi

5 kV along Burley St-P2 0.9 m

Total 18.5 mi

• 23 kV/15 kV Padmount Switch Replacement

Replaced in 2005 Replaced for 2007 Planned for 2008 Chili's Restaurant Electronics Ave Endicott St Rosewood Industrial Park Friday’s Restaurant

• Inspection of OH/UG Devices (Infrared Scanning) ongoing

• Substation• OH Line Equipment

Reliability Programs - Finite

• Radio Controlled Sectionalizing

A) Benefits• Reduces the duration of outages during restoration activities• Features automatic sectionalizing• Features time delay / line tag for safety

B) How Many ? • Installed 8-23 kV ABB Reclosers• Installed 12-23 kV Gang Operated Air Break (GOAB) switches• Installed 8-23 kV Capacitor Banks

C) Where the new Reclosers will be installed?• Poplar Street• Electronics Ave• Rt 1 South• Collins Street RR tracks (2371 Line)

Reliability Programs - Continuous

• Tree Trimming: 3 year cycle

• Substation Testing: ongoing

• TLM – Transformer Load Management: ongoing

• Pole Inspection: ongoing

• 1009 poles upgraded since 2000

Distribution Automation

• Automatic Meter Reading (AMR/AMI)

• Automatic Power Restoral Scheme

• Automatic Power Factor Correction

• SCADA Control

• Outage Management System (OMS)

A1800 ALPHA Meter/Collector

AMR Mesh Network

Level 1

Level 1

Level 4

Level 3Level 2

Level 5

Level 2Level 3

Level 4

Level 4

Level 4

Level 1

Level 3

Public WANs

Distribution Technology Integration

2008-2009 Capital Authorization Projects

Project 2008 2009

Wood Electric $1,200,000 $2919,692

Cabot Rd $200,000 ___

AMR $2,500,000 $200,000

Plains Park Lighting $224,741 $230,000

Station 39 $60,000 ___

Conant Sub $70,000 ___

Spacer Installation $350,000 $300,000

Traffic Signals $200,000 $200,000

Storage Facility $150,000 $1,100,000

Automation: Station 39 Construction

Project Owner: Niles

Tasks Completion Status

• Design 100%

• Equipment Bid Specification 100%

• Civil Construction 100%

• Equipment Installation & Testing 90%

Automation: Conant Sub Auto Transfer Scheme

Project Owner: Niles

Tasks Completion Status

• Design 100%

• Equipment Bid Specification 100%

• Civil Construction ----

• Equipment Installation & Testing ----

Conant Sub Auto Transfer Scheme

Plains park lighting

Project owner: Jay

Tasks Completion Status

• Design 100%

• Equipment Bid Spec In-Progress

• Equipment Order July/August 2008

• Construction March/April 2009

Major Reliability Projects 2008/2009

Year Project Cost

2008 Cabot Road Substation 100,000

2008 Hylands Substation Reconstruction-Station 39 70,000

2008/09 #2 Burroughs Street Storage Reconfiguration 1,096,000

2008 Wood Electric Substation Upgrade-Part 1 1,248,394

2009 Wood Electric Substation Upgrade-Part 2 2,940,000

2008 Conant Sub Auto transfer Scheme 70,000

2008/2009 Sub 42 capacity Study 100,000

  TOTAL COSTS: $4,376,000

Town of Danvers Long-Range Planning

Cabot Road Substation

New 9/12/ 15MVA Substation.

Six (6) new 4.16 kV CKTs will enable Putnamville to be retired and provide substantial load relief to Conant Street Sub.

• SCADA Controlled Feeders allow remote switching from Engineering.

Cabot Rd Substation Site

Cabot Rd Substation

CABOT ROAD SUBSTATION

Typical R.R Tracks to Be Removed and Surface Restored

Cabot Rd Sub Load Transfer

CKT Date

Yacht Club (Old Elliot) 12/1/2007

Woodvale II 6/1/2008

Woodvale I 6/9/2008

Putnamville 7/7/2008

Burley Street (Conant East) 7/28/2008

Putnamville Sub Demolition Starts 9/30/ 2008

Wood Electric Substation Project Time Line

Preliminary Design & Planning Start 1/2007 Finish 9/2007

Land research

Survey

Zoning/Permitting/Conservation Com 6/2008

Planning: Industrial Zone-No permit required

• Conservation Commission:

• State Highway:

Design preparations Start 1/2008 Finish 6/2008

• Design Bid preparation and award

Design Finalization

Equipment Specification preparation

• Equipment Bid preparation and award – Transformer and 15kV Switchgear

Presentations 6/2008

• Municipal Light Board

• DPW Director/Town Manager

• Abutters

Wood Electric Substation Construction Time Line

Tree Trimming 4/01/2008

Substation Construction Start 9/2008 Finish 12/2008

• Phase 1 Transfer Load from 2420 line State hospital Load May 2008

• Danvers Industrial Park June/July 2008

• Phase 2 Preparation and Ground work September 2008

• Phase 2 Transformer Installation May 2009

• Phase 3 Switchgear Installation May 2009

• Phase 4 Relay Testing June 2009

• Phase 5 Functional Test July 2009

Wood Electric Substation Design

Wood Electric Substation Cost

Task

Engineering & Design $150,000

Site Surveying $20,660

Soil Testing $1,369

Transformers $1,760,000

Switchgear $880,000

Other equipment $100,000

Groundwork & oil containment $400,000

Installation of Station $150,000

Installation of OH/UG facilities $370,000

Fence, grounding and landscaping $150,000

Misc. equipment, fencing, landscaping & tree trimming $70,000

$4,052,029

Customer Satisfaction -Reliability Indices

• SAID – System wide outage duration

Outages affecting major circuit backbones

• CAID – Customer average outage duration

Outages affecting specific customers through lateral taps – localized storms, animal, and equipment failures

• SAIF – System wide outage frequency

Number of outages experienced by system

Reliability Indices

Sys Avg. Interrup Duration SAID = Cust hrs-out <1.2 (HRS) Cust served

Cust Avg. Interrup Duration CAID = Cust hrs out <1.3 (HRS) Cust Interrupted

System Avg. Interrup Freq SAIF = Cust interrupted < 1.12 (HRS) Cust served

Industry Standard Measures from Y2000/2005Industry Standard Measures from Y2000/2005Customer Satisfaction and System Customer Satisfaction and System PerformancePerformance

Acceptable Performance

Factors Influencing CAID - 2005

• Number of localized storms & Lightning

• Degree of storm damage

• Sustained pockets of outages due to equipment failure

• Single customer outages

• Sub 42’s load tap changer paralleling scheme failure

Reliability Indices

NE Area Averages

2001 2002 2003 2004 2005 2006 2007

SAID(Hrs)

<1.20 1.12 0.47 0.47 0.50 0.66 0.67 1.110.7

CAID(Hrs)

<1.3 1.14 1.49 0.89 0.73 1.31 1.01 1.301.21

SAIF <1.12 0.98 0.31 0.53 0.69 0.50 0.66 0.83.58

Note: Figures in red do not include major storms

Major Storms - 2007

• 6/21/2007 – 2365 Line – Lightning Strike on Purchase Street Damaged Insulators

• 7/28/2007 – 2420 Line– Lightning Strike on Route 1 Damaged Overhead Cable & Recloser

• 9/8/2007 – 2393 Line – Lightning Strike Tripped the Breaker at 20A Line Patrolled - Lightning Strike Suspected

Outage Causes 2002 - 2007

86

4

20

10

1

26

62

912

3 5 7

58

10 8 8

1

10

93

139

2 1 1

93

7

17

60

4

84

713

74 4

0

10

20

30

40

50

60

70

80

90

100

Equip. Failure Storms /Lightning

Tree Animal MV Accident Unknown

Cause of Incident

# o

f In

cid

ents

2002

2003

2004

2005

2006

2007

Breakdown of Equipment Failure 2007

8%

4%

19%

23% 4%4%

38%

Trans Fuse

Others

Secondary Cable

Line Fuse

OH Cable

Transformer

UG Cable

Project Description Normal Time OT AmountCabot Rd Sub 60 40 40,000Wood Electric Sub 60 40 20,000Coannt Sub 60 40 20,000Station 20A 50 50 15,000Substation Maintenance Backlog 70 30 10,000Distribution Maintenance ( Pole, Overloaded XFMR, etc) 60 40 16,000Recloser / Switch Installation 80 20 9,362Conant West Underground Getwaway Cables 90 10 8,000Town Lighting Project 70 30 10,000Emergency Responses ( weather, Storms, After Hours) 247,715Town Services 10,658Billable OT 21,424

Total 428,159

Conclusion

The Division received APPA’s RP3 Platinum Award (score of 98/100) on May 21, 2008 for its Reliability, Safety, and System Improvement programs. Electric Division has improved system performance since 1995 through employee commitments in positive work ethics, acceptance of new division procedures and policies, technical and customer service training, system ownership, increased productivity, and excellent design and maintenance standards.

ITS GOOD TO BE MORE THAN YOU ARTURNED ON TURNED OFF!

Thank you

Thank You

Questions?