NEEDS ASSESSMENT REPORT - Region: Chatham-Kent/L ambton/Sarnia
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Needs Assessment Report n/Sarnia Regioon
p - Chatham-Kent/Lambton June 12, 2016
Hydro One Netw works Inc.
483 Bay Street
Toronto, Ontario
M5G 2P5
NEEDS ASSESSMENT REPORT
Region: Chatham-Kent/Lambton/Sarnia
Date: June 12, 22016
Preparred by: Cha
atham-Kent//Lambton/S
Sarnia Stud
dy TeamNeeds Assessment Rep
port – Chatham
m-Kent/Lambton/Sarnia Regioon Junee 12, 2016
This reeport is preppared on beehalf of the Chatham-K Kent/Sarnia/L
Lambton reggional plannning
study teeam with thee participatio
on of represeentatives from
m the follow
wing organizzations:
Orgganizations
Hydro One Networrks Inc. (Leaad Transmittter)
Independent Electricity Systtem Operator
Bluew
water Powerr Distributionn Corporatioon
En
ntegrus Inc.
Hyddro One Netw
works Inc. (D Distribution))
Pagee | 2Needs Assessment Rep
port – Chatham
m-Kent/Lambton/Sarnia Regioon Junee 12, 2016
Disclaim
mer
This Neeeds Assessm ment Reportt was preparred for the puurpose of iddentifying pootential needds in
the Chhatham-Kentt/Lambton/Sarnia and to assess whether thoose needs require furrther
coordin
nated regional planning.. The potenttial needs thhat have beeen identified through this
Needs Assessmentt Report may be studiied further through suubsequent reegional plannning
processses and may be reevaluated based on n the findinggs of furtherr analysis. Thhe load forecast
and ressults reporteed in this Needs Assesssment Repoort are baseed on the innformation and
assumpptions providded by study team particiipants.
Study team partiicipants, th heir respecttive affiliatted organizzations, andd Hydro One
Networrks Inc. (collectively, “tthe Authors””) make no representations or warrranties (exprress,
impliedd, statutory or otherwise)) as to the Needs Assesssment Reporrt or its conttents, includding,
withoutt limitation, the accuraccy or complleteness of the informaation thereinn and shall not,
under any circumsttances whatssoever, be liiable to eachh other, or too any third party for whhom
the Neeeds Assessm ment Report was prepareed (“the Inttended Thirdd Parties”), or to any other
third paarty reading or receiving
g the Needs Assessment Report (“thhe Other Third Parties”),, for
any direect, indirect or consequeential loss orr damages o r for any puunitive, inciddental or speecial
damagees or any loss of profit, lo
oss of contraact, loss of o pportunity or loss of goodwill resulting
from orr in any way related to the reliancee on, accepttance or usee of the Neeeds Assessm ment
Report or its con ntents by any person or entity, including, but not limited to, the
aforemeentioned perrsons and enttities.
Pagee | 3Needs Assessment Rep
port – Chatham
m-Kent/Lambton/Sarnia Regioon Junee 12, 2016
NEEDS ASSESSMEN
NT EXECUT
TIVE SUMM
MARY
NAME Chaatham-Kent/L
Lambton/Sarnnia Study Teaam
LEAD Hydro One Netw works Inc.
REGION Chaatham-Kent/L Lambton/Sarnnia
START DAT
TE Aprril 13, 2016 END DAT
TE June 122, 2016
1. IN
NTRODUCTION
The purpose of this Needs Assessment report is to undertake an assessment of the Chatham-
Kent/Lambton/Sarnia Region and determine if there are regional needs that require coordinated regional
planning. Where regional coordination is not reqquired, and a “localized” wires solutioon is necessarry, such
needs will beb addressed between releevant Local Distribution
D C
Companies (LLDCs) and H Hydro One annd other
parties as req
quired.
For needs thhat require furrther regionall planning andd coordinationn, the Indepeendent Electricity System O
Operator
(IESO) will initiate the Scoping Asseessment proceess to determ mine whether an IESO-ledd Integrated R Regional
Resource Pllanning (IRR RP) process, or the transm mitter-led Reggional Infrastrructure Plan (RIP) processs (wires
solution), orr whether bothh are requiredd.
2. REGIONAL ISSUE/ TR
RIGGER
The Needs Assessment
A fo
or the Chathaam-Kent/Lambton/Sarnia R Region was trriggered in response to the Ontario
Energy Board’s (OEB) Regional
R Infraastructure Plaanning processs approved iin August 20013. To prioriitize and
manage the regional plannning processs, Ontario’s 212 regions weere assigned to one of thrree groups - G Group 1
Regions are being review
wed first. Thee Chatham-Keent/Lambton//Sarnia Regioon belongs to Group 3. Thhe Needs
Assessment for Chatham-Kent/Lambto on/Sarnia Reg gion was trigggered on Aprril 13, 2016 aand was comppleted on
June 12, 201
16.
3. SC
COPE OF NEEDS ASS
SESSMENT
T
The scope of this Needs Assessment
A was
w limited to o the next 10 yyears as per thhe recommenndations of thee
Planning Pro
ocess Workinng Group Repport to the OE
EB.
The scope of the Need ds Assessmen nt includes a review of ttransmission system capaability whichh covers
transformer station capaccity, transmisssion circuit thermal
t capaccity, voltage pperformance and load resttoration.
System reliaability, operaational issues and asset repplacement pllans were alsoo briefly reviewed as parrt of this
Needs Assesssment.
Needs emerg ging over the next 10 yearrs and requirin
ng coordinateed regional pllanning may bbe further asssessed as
part of the IE
ESO-led Scop ping Assessmment and/or IR
RRP, or in thee next planninng cycle. If reequired, an IR
RRP will
develop a 20 0-year strateg
gic direction for
fo the Region
n
4. IN
NPUTS/DAT
TA
Study team m participantss, including representative
r es from LDC Cs, the IESO O, and Hydrro One transsmission
provided in nformation foor the Chathaam-Kent/Lam mbton/Sarnia Region. Thee informationn included: pplanning
activities alrready underw
way, historicall load, load forecast,
fo conseervation and demand mannagement (CDDM) and
distributed generation (DG)
( information, system m reliability performancee, operationaal issues andd major
equipment approaching
a end-of-life.
e
5. ASSESSMEN
NT METHO
ODOLOGY
Y
The assessmment’s primarry objective was
w to identiffy the electriccal infrastructture needs inn the Region over the
study periodd (2015 – 20224). The asseessment revieewed availablle informationn and load foorecasts and iincluded
single contin
ngency analyssis to identify
y needs.
Pagee | 4Needs Assessment Rep
port – Chatham
m-Kent/Lambton/Sarnia Regioon Junee 12, 2016
6. RESULTS
Transmissio
on Capacity Needs
A. 230/115 kV Autotranssformer Capaccity
Baseed on the grooss regional-coincident load forecast, thhe 230/115 kV
V autotransforrmers capacitty (Scott
TS) supplying thhe Region iss adequate ovver the studyy period for the loss of a single 230//115 kV
autootransformer in the Regionn.
B. 230 kV Transmission Lines
Baseed on the grooss regional-ccoincident looad forecast, the 230 kV ccircuits supplying the Reggion are
adeqquate over thee study periodd for the loss of a single 2330 kV circuit in the Regionn.
C. 115 kV Transmission Lines
Baseed on the grooss regional-ccoincident looad forecast, the 115 kV ccircuits supplying the Reggion are
adeqquate over thee study periodd for the loss of a single 1115 kV circuit in the Regionn.
D. 230 kV and 115 kV Connection Facilities
Loadings at Kentt TS exceed their transform
mer 10-Day L
Long Term R
Rating (LTR) in 2016 based on the
net load forecast..
System Reliiability, Operation and Restoration Needs
N
A. Load Seecurity
Baseed on the gross reggional-coinciddent load forecast annd the exiisting transm
mission
conffiguration, loaad security crriteria can be met over the study period..
B. Load Reestoration
Baseed on the gross regionnal-coincidentt load forecaasts with thhe use of eexisting transsmission
infraastructure, resstoration criteeria can be meet over the stuudy period.
C. Voltage Performancee
Undder gross regional-coinciddent peak loaad conditions, post-continngency voltagge at all trannsformer
statiions in the reggion meet Maarket Rule reqquirements.
D. Bulk Poower System Performance in the Regionn
Baseed on the asssumed system m study condditions, no buulk power syystem issue w
was identifiedd in the
Reggion. The IESO might unddertake planniing study to aaccess the adeequacy of thee bulk power system
withh different sysstem conditioons.
Aging Infra
astructure / Replacement
R t Plan
During the study
s period, plans to replaace aged equiipment at stattions and seveeral transmisssion circuits w
will take
place. Furtheer details of these investments can be fo
ound in Sectioon 6.3 of this report.
7. RECOMMENDATIONS
S
Based on the findings off the Needs Assessment, th he study team
m recommendss Hydro One transmissionn and the
relevant LDCs to develop p a local plan to address th
hermal overloaad of transforrmer T3 at Keent TS.
Pagee | 5Needss Assessment Report - Chathaam-Kent/Lamb
bton/Sarnia Reggion June 12, 2016
TAB
BLE OF CONTENTS
S
Need
ds Assessmen
nt Executivee Summary ................................................................................. 4
List of Figures an
nd Tables ……………… ……………… ………………………… ……………....7
1 Introduction n ..................................................................................................................... 8
2 Regional Isssue / Triggerr .................................................................................................. 8
3 Scope of Neeeds Assessm
ment............................................................................................ 9
3.11 Chatham-K Kent/Lambto on/Sarnia Reegion Descripption and Coonnection Configurationn
............................................................................................................................................. 9
4 Inputs and Data ............................................................................................................. 12
4.1
1 Load Foreccast .............................................................................................................. 13
5 Assessment Methodolog
gy ............................................................................................. 13
6 Results ........................................................................................................................... 14
6.1
1 Transm
mission Systeem Capacity
y Needs ................................................................. 14
6.1.1 230 kV and 115
5 kV Autotraansformers ............................................................ 14
6.1.2 230 kV Transmission Lines ............................................................................. 14
6.1.3 115 kV Transmission Lines ............................................................................. 14
6.1.4 230 kV and 115 kV Connecttion Facilitiees ...................................................... 14
6.2
2 System
m Reliability,, Operation and Restorattion Review .................................... 15
6.2.1 Load
d Security .................................................................................................... 15
6.2.2 Load
d Restoration
n ............................................................................................... 15
6.2.3 Voltage Perform
mance ........................................................................................ 16
6.2.4 Bulk
k Power Systtem Perform
mance in the Region ............................................. 16
6.3
3 Aging Infrastructurre and Replaacement Plann of Major Equipment .................... 16
7 Recommend
dations ......................................................................................................... 17
8 References ..................................................................................................................... 17
Appeendix A: Loaad Forecasts ................................................................................................ 18
Appeendix B: Key
y Terms and Definitions ............................................................................ 21
Appeendix C: Acrronyms ........................................................................................................ 23
Page | 6Needss Assessment Report – Chathaam-Kent/Lamb
bton/Sarnia Reegion Juune 12, 2016
LIST
T OF FIGU
URES
Figurre 1: Map off Chatham-KKent/Lambton
n/Sarnia Reggion ................................................... 9
Figurre 2: Single-Line diagram
m – Chatham
m-Kent/Lammbton/Sarnia Region ........................ 11
LIST
T OF TAB
BLES
Tablee 1: Study teeam participaants for Chattham-Kent/LLambton/Sarrnia Region ................... 8
Tablee 2: Hydro One and custtomer assets in Chatham m-Kent/Lambbton/Sarnia Region...... 10
Tablee 3 : Gas-fireed generationn output levels assumedd for Needs Assessment ................. 12
Tablee 4 : CDM fo orecast for th
he Chatham-- Kent/Lambbton/Sarnia Region ......................... 18
Tablee 5: Chathamm-Kent/Lamb bton/Sarnia regional coiincidental load forecast ................... 19
Tablee 6 : Chathamm-Kent/Lam mbton/Sarniaa regional noon-coincidenntal load foreecast ......... 20
Page | 7Needss Assessment Report – Chathaam-Kent/Lamb
bton/Sarnia Reegion Juune 12, 2016
1 INTRODUC
CTION
This Needs Assesssment reporrt provides a descriptionn of the analyysis to identtify needs thaat
may be emerging g in the Chaatham-Kent//Lambton/Saarnia (the Region) overr the next teen
yearss. The deveelopment off the Needs Assessmennt report is in accordannce with thhe
regional planning
g process as set out in th
he Ontario E nergy Boarrd’s (OEB) Transmissioon
Systeem Code (TSSC) and Disttribution Sysstem Code ( DSC) requirrements andd the Planninng
Proceess Working
g Group (PPW WG) Report to the OEB.
The purpose of this Needss Assessmen nt report is to: consideer the inforrmation from m
plann
ning activitiies already underway; undertake an assesssment of thhe Chatham m-
Kent//Lambton/Saarnia Region n to identify near term annd/or emergiing needs inn the area; annd
determmine if thesse needs req quire a “loccalized” wirees only soluution(s) in the near-term m
and/o
or a coordinaated regionaal planning assessment. Where a loccal wires onnly solution is
necesssary to addrress the need
ds, Hydro On ne, as transm
mitter, with LDCs or other connectinng
custo
omer(s) willl further undertake pllanning asssessments to develop options annd
recom
mmend soluttion(s). For needs that reequire furtheer regional pllanning and coordinationn,
the Independent Electricity System Operator (thee IESO) will initiate the Scopinng
Assesssment proccess to deterrmine wheth her an IESO O-led Integrrated Regional Resourcce
Plann
ning (IRRP)) process, or the transsmitter-led Regional Innfrastructuree Plan (RIP P)
proceess (wires so
olution), or both are requ
uired.
This report was prepared by Hydro One (Lead Transm mitter) with input from the Chatham m-
Kent//Lambton/Saarnia Region n Needs Asssessment stuudy team listted in Table 1. The repoort
captu
ures the resu
ults of the asssessment based on infoormation proovided by LDCs and thhe
IESO
O.
Tablee 1: Study tea
am participa
ants for Chattham-Kent/L
Lambton/Sarrnia Region
No. Organ
nizations
1. Hydro On
ne Networks Inc. (Lead Transmitter)
2. Independeent Electricitty System Operator
p
3. Bluewaterr Power Disttribution Corrporation
4. Entegrus Power Liness Inc.
5. Hydro On
ne Networks Inc. (Distrib
bution)
2 REGIONA
AL ISSUE / TRIGGE
ER
The Needs Assessment for the Chatham m-Kent/Lambbton/Sarnia Region wass triggered in
respo
onse to the Ontario Enerrgy Board’s (OEB) Regiional Infrasttructure Plannning processs
appro
oved in August 2013. To prioritizze and mannage the reggional plannning process,
Page | 8Needss Assessment Report – Chathaam-Kent/Lamb
bton/Sarnia Reegion Juune 12, 2016
Ontarrio’s 21 regiions were asssigned to one of three groups, where Group 1 Regions arre
being
g reviewed first. The Region falls into Groupp 3. The Neeeds Assessm ment for this
Regio
on began on April 13, 20 016 and wass completed o n June 12, 2016.
3 SCOPE OF
F NEEDS ASSESSM
MENT
This Needs Asssessment co overs the Chatham-Kennt/Lambton//Sarnia Reggion over an
assessment period of 10 yearrs, from 201 15 to 2024. The scope of the Needs Assessmennt
includes a review w of transm
mission systeem connectiion facility capability which coverrs
transfformer statio
on capacity,, transmissio
on circuit thermal capaccity, voltage performancce
and load restorattion. System
m reliability, operationall issues andd asset replaacement planns
were also briefly reviewed ass part of this Needs Asseessment.
3.1 Chatham-Keent/Lambton/Sarnia Reegion Descrription and Connection
n
Configuratio
on
The region includ des the munnicipalities off Lambton S hores and Chatham-Keent, as well as
the townships of Petrolia, Plympton-W Wyoming, Brooke-Alviinston, Daw wn-Euphemiaa,
Ennisskillen, St. Clair, Warwiick, and Villlages of Oil Springs andd Point Edw
ward. The areea
is borrdered by thee London area
r to the easst and Windssor-Essex to the southweest.
Figurre 1 illustratees the approx
ximate study y area.
Fig
gure 1: Map
p of Chatha
am-Kent/Laambton/Sarn
nia Region
Page | 9Needss Assessment Report – Chathaam-Kent/Lamb
bton/Sarnia Reegion Juune 12, 2016
Electtricity supply
y for the Reegion is prov
vided througgh a networkk of 230 kVV and 115 kVV
transmmission linees. The bulk k of the electrical suppply is transsmitted throough 230 kV
V
circuits (N21W, N22W, L24 4L, L26L, W44LC and W45LS) tow wards Buchaanan TS. This
Regioon also con ntains a nummber of inteerconnectionns with neigghboring Michigan Statte
(B3NN, L4D and L51D)
Listed in Table 2 and shown n in Figure 2 are Hydro One transm
mission and transmissionn-
conneected custom
mers’ assets in the Chath
ham-Kent/Laambton/Sarnnia Region.
Tablee 2: Hydro One and custo
omer assets in Chatham-K
Kent/Lambtton/Sarnia Region
H
Hydro One C
Customer
115 kV Circcuits 230 kV Circu
uits T
Transformer Trransformer
Stations Stations
N1S, N4S, N6C, N7C, N6S, N7S, V41N,
V Scott T
TS, Lambtonn TS, Forest Jura HVDS,
S2N
N, N5K, K2Z V43N
N, L23N, L27V,
L Kent TS, Duart TS, mer CTS
Custom #1,
L25V
V, L37G, L38G,
L Modelland TS, Custom
mer CTS #2,
C, L29C, C31,
L28C Wansttead TS, St. Custom
mer CTS #3,
W44LLC, W4
45LS, Andreew TS, Custom
mer CTS #4,
S47C
C, L24L, L26L,
L Walla ceburg TS Custom
mer CTS #5,
N21W
W, N22W Custom
mer CTS #6,
Custom
mer CTS #7,
Custom
mer CTS #8
Page | 10Needs Assessment Rep
port - Chatham-Ken
nt/Lambton/Sarniaa Region June 12, 20116
Leg
gend
CTS #7 500 kV circuit 230 kV cirr cuit
115 kV circuit Autotransfformer
CTS #4 N.O. Normally Open point Study Are
ea
N1S
N4S
St Andrew TS To Bruce
CTS #8 Scott TS
C
C
Buch
hanan TS
N6
B562L
B563L
N7
N6S
nsAlta Sarnia
Tran Modeland TS Wond
derland TS
N7S
CGS N21W
Interc
connection to
Michi gan U.S. B3N V41N N22W
St
S Clair Power V43N
CGS
L23N
CTS #5
Ongoing Project
CTS #1 N
S2N W2S
Nova
a SS
N.O.
CTS #2
N
N5K W
Wanstead TS Forest CTS #6 Land
don Strathroy
S
Jura DS CG
GS TS
CTS #3 Buchanan
L27V
DESN
L25V
L37G
W4 2L
Greenfield
G Wallaceburg TS
L38G
Energy Centre W43 L
C
L51D W44 L
Intercconnections L4D 5 LS
N.O. W 4
to Miichigan U .S. L24L
L28C
L29C L26L
East Lake St. Edgeware TS
Clair Wind Farm Lambton TS K2Z
To Lauzon TS
GSPC CGS Longwood TS
Kent TS N582L
To
o Nanticoke
South
Kent C31
S
Wind 5L
W4
Farm C21J W44LC
C22J Spence S S Duart TS
S47
7C
To
Lauzon C23Z
TS C24Z
eau Windfarm
Erie Spence Windfarm
Chatham SS
Fig
gure 2: Single-L
Line diagram – Chatham-Kent/Lambton/Saarnia Region
Page | 11Needss Assessment Report - Chathaam-Kent/Lamb
bton/Sarnia Reggion June 12, 2016
4 INPUTSS AND DATA
In orrder to connduct this Needs Asseessment, stuudy team participants provided thhe
follow
wing inform
mation to Hyd
dro One:
LDCs provid ded historiccal summer (2012 – 20014) as weell as summ mer gross loaad
fo
orecast (2015
5 – 2024)
IE
ESO provideed:
a.. Historiccal regional coincident peak load andd station nonn-coincidentt peak load
b. List of existing reliaability and operational isssues
c.. Gas genneration assuumptions (Seee Table 3)
d. Conserv vation and Demand Management (CDM) andd Distributedd Generatioon
(DG) daata
Hydro One (T Transmission n) provided transformer,, station andd circuit ratinngs
Hydro One (T Transmission n) provided existing reliability and operation isssues
Any relevantt planning in nformation, including planned transsmission andd distributioon
in
nvestments are provided by Hydro One (Transm mission) and LDCs
Tablee 3 : Gas-fireed generation
n output leveels assumed f or Needs Assessment
Maximu
um continuous
Gas Gene
erators in Chaatham‐
summmer outputs
Kent/Lambton/Sarnia area
(MW)
Greeenfield Energyy Centre 1001
TransAlta Sarnia 435
St. Clair Power CG
GS 484
Greeenfield South Power Corpo
oration (GSPC
C) 283
Based d on the histtorical inform
mation provided, Chathaam-Kent/Lam mbton/Sarniia Region is a
summmer peaking region. As such, the Neeeds Assessm ment was connducted baseed on summeer
peak load and sttudies condiitions. Furth her, as part o f Hydro One’s regularr sustainmennt
assessment, Wan nstead TS has been identtified as reacching end-off-life and is scheduled foor
a com mplete statiion rebuild. Prior to laaunch of thhe Needs Assessment study, LDC Cs
conneected to the existing Waanstead TS and Hydro One had com mmitted to rebuilding thhe
existiing Wansteaad TS from the current 115 kV suppply to 230 kV supply. The project is
currently being assessed by y the IESO as part its System Imppact Assessm ment processs
(CAAA ID 2015-5 545). As su uch, the Neeeds Assessmment assumeed Wansteadd TS will be
conveerted to a 230 kV statiion. Please refer to Secction 6.3 forr more detaiils about this
conveersion projecct.
Page | 12Needss Assessment Report – Chathaam-Kent/Lamb
bton/Sarnia Reegion Juune 12, 2016
4.1 Load Foreca
ast
Basedd on data provided by the study team, the suummer grosss coincidennt load in thhe
Regioon is expecteed to grow at an averagee rate of appproximately 1.3% annuallly from 20115
– 20224. Factoring
g in the contributions off CDM and DG, the sum mmer net cooincident loaad
in thee Region is expected too grow at an average r ate of approoximately 0.2% annuallly
from 2015 – 2024 4.
Pleasse refer to Ap
ppendix A fo
or the load fforecasts utillized for thiss Needs Asseessment.
5 ASSESSME
ENT MET
THODOLO
OGY
The following meethodology and assumpttions are madde in this Neeeds Assessm
ment:
1. The assessmeent is based on summer peak loads.
2. Load forecassts are proviided by the Region’s LDCs using historical 2015 summeer
peak loads as reference points.
3. For the purpo ose of Needs d Assessmen nt, 2014 hisstorical load levels weree assumed foor
trransmission connected in ndustrial cusstomers throuughout the study period.
4. The historicaal peak loadss at Hydro One’s statioons are adjussted for extrreme weatheer
coonditions according to Hydro One methodologyy.
5. The LDC’s lo oad forecastt is translateed into load growth ratees and is appplied onto thhe
historical, exttreme weather adjusted, reference pooints.
6. Accounting for (2), (3), (4), and (5 5) above, a gross load forecast annd a net loaad
foorecast are developed. The gross load foreca st is used to develop a worst casse
sccenario to iddentify needss. Where theere are issuess, the net forrecast, whichh accounts foor
CDM and DG G, is analyzeed to determiine if the neeeds can be deferred.
A gross and net non n-coincidentt peak loadd forecast was used to perform thhe
analysis for sections 6.1.4
A gross and net reg gional coincident peak load forecaast was useed to perform m
the analyssis for sectio
ons 6.1.1 to 6.1.3, 6.2.1, 6.2.2 and 6.22.4
7. Review impaact of any on-going an nd planned developmennt projects inn the Regioon
du uring the stu
udy period.
8. Review and assess impaact of any critical/majoor elements planned/ideentified to be
reeplaced at thhe end of their useful lifee such as trannsformers, cables, and sttations.
9. Station capaccity adequaccy is assesseed by compparing the non–coincideent peak loaad
with the statio on’s normal planning su upply capacitty by assum ming a 90% laagging poweer
faactor for staations withou ut low-voltaage capacitorr banks or ththe historical low voltagge
power factor,, whichever is more con nservative. Normal plannning supplyy capacity foor
trransformer stations in th his Region is determineed by the suummer 10 – Day Limiteed
Time Rating (LTR).
Page | 13Needss Assessment Report – Chathaam-Kent/Lamb
bton/Sarnia Reegion Juune 12, 2016
10. Transmission
n adequacy assessment iss primarily based on the following crriteria:
Regional load is set too the forecassted regionall coincident peak load.
With all elements in service, thee system is to be capabble of suppllying forecast
demand with equipm ment loading g within conntinuous ratiings and vooltages withiin
normal raange.
With one element outt of service, the system i s to be capaable of suppllying forecast
demand with circuit loading with hin their longg term emerrgency (LTE E) ratings annd
transform
mers within thheir 10 – Daay LTR.
All voltag ges must be within pre and post coontingency ranges as peer the Ontariio
Resource and Transm mission Assesssment Criteeria (ORTAC C).
The systeem to meet load securitty criteria ass per the OR RTAC, speccifically, witth
one elemeent out of serrvice, no mo
ore than 150 MW of loadd is lost by configurationn.
With two o elements out of serviice, no morre than 600 MW of loaad is lost by
configuraation.
The systeem is capab ble of meetiing the loadd restorationn timeframees as per thhe
ORTAC.
6 RESULTS
Thiis section summarizes the results of the Needs Assessm
ment in thee Chatham––
Kennt/Lambton//Sarnia Region.
6.1 Transmisssion System
m Capacity Needs
6.1.1 230 kV and 115 kV Autotransfformers
The 230/115 kV autotransforrmers (Scottt TS) supplyying the Regiion are adeqquate over thhe
study
y period for the loss of a single 230/1
115 kV autottransformer in the Regioon.
6.1.2 230 kV Transmission
n Lines
The 230 kV circuits are adequate over the study peeriod for thee loss of a single 230 kV
V
circuit in the Reg
gion.
6.1.3 115 kV Transmission
n Lines
The 115 kV linees supplying g the Region n are radiall single circcuit lines. These 115 kV
V
circuits have adeq
quate capaciity over the study periodd.
6.1.4 230 kV and 115 kV Connection Facilities
A staation capacity
y assessmen
nt was perforrmed over thhe study periiod for the 2330 kV and
Page | 14Needss Assessment Report – Chathaam-Kent/Lamb
bton/Sarnia Reegion Juune 12, 2016
115 kV transformmer stations in the Regio
on using the summer stattion non- cooincident peaak
load forecasts.
Kent TS T3/T4 is forecastedd to exceed its 10 – Dayy LTR in 20016 based onn the net loaad
forecast (approximately 119%
% Summer 10 – Day LT TR in 2016).
All thhe other TSs in the Chaatham-Kent//Lambton/Saarnia Regionn is forecastted to remaiin
withiin their norm
mal supply caapacity durin
ng the study period.
6.2 System Reliability, Operation and Restorattion Review
w
6.2.1 Load Seccurity
Based d on the gro
oss regional coincident peak load forrecast, with all transmission facilitiees
in–seervice and co
oincident witth an outagee of the largeest local generation unitss, all facilitiees
are within appliccable ratingss. The largeest local genneration unitt is a 230 kV–connecteed
Green nfield Energ
gy Centre unit on the 2300 kV.
Based d on the gro oss regionall-coincident load forecaast, the loss of one elem ment will noot
resultt in load innterruption greater than n 150 MW by configuuration, by pplanned loaad
curtailment or by y load rejecction. In addition, undeer these connditions, all facilities arre
withiin their appliicable ratings.
Based d on the grooss regional coincident load forecasst, the loss of two elem ments will noot
resultt in load innterruption greater than n 600 MW by configuuration, by pplanned loaad
curtailment or by y load rejecction. In addition, undeer these connditions, all facilities arre
withiin their appliicable ratings.
Thereefore, load security criteeria for the Region are met.
6.2.2 Load Resstoration
Basedd on the gross coinciident load forecast at Modeland TS, Wansttead TS annd
Wond derland TS, by the end of study perriod, the loadd interruptedd is expectedd to approacch
240 MW for the loss of doub ble-circuit 230 kV line N21W and N22W. Pressently, N21W W
can be sectionaliized and loaad can be restored from either Scottt TS or Bucchanan TS by
use of existing switches on N21W. Witth the switching capabiilities, magnnitude of loaad
loss can be reducced from thee peak level of over 2400 MW to lesss than 150 MW within 4
hourss. The remaiining load caan be resuppplied within t he 4-8 hourrs timeframee by means of
load transfers annd/or switch hing alternaate feeder suupplies to neighbouringg, unaffecteed
transfformer statiions. Hydroo One will continue too monitor load growthh at stationns
Page | 15Needss Assessment Report – Chathaam-Kent/Lamb
bton/Sarnia Reegion Juune 12, 2016
conneected to N2
21W/N22W and updatee the restorration plan on an ongooing basis as
appro
opriate.
Based d on the assumed load levels for the transmisssion-conneccted industriial customerrs
conneected to N6 6S and N7S,, the load in nterrupted will exceed 150 MW foor the loss of
double-circuit 23 30kV line N6 6S and N7S.. Hydro Onee crews locaated in Sarniaa will be ablle
u
to reespond as quickly as possible to restore loadd to meet thhe 4 hours and 8 hourrs
restorration criterria. It is thee customer’s accountabbility to enssure that thhere is onsitte
emergency supply for essentiial load or arrrange for baackup supplyy from otherr sources.
Thereefore, load reestoration crriteria for thee Region aree met.
6.2.3 Voltage Performancce
Undeer gross regiional coincident peak lo oad conditioons, post-coontingency voltage at a ll
transfformer statio
ons in the reg
gion meet Market Rule r equirements.
6.2.4 Bulk Pow
wer System Performancce in the Reegion
Based d on the stuudy assumpttions listed in Section 4, no issue was identiffied for bulkk
poweer system in the Region. It is noted that, howeveer, there aree a number of large scale
comb bined-cycle gas plants in n the Sarniaa-Lambton a rea and gass-fired generration outpuut
couldd vary depen nding on bro oader systemm conditions such as exppected load growth in the
proviince or availlability of otther generatiion resourcees. Moreoverr, as previouusly noted inn
Section 3.1, the Chatham-Keent/Lambton n/Sarnia Reggion is connnected to thee US markeet
throu
ugh interconn nections in Sarnia and Lambton. Im mport and expport generation levels onn
the in
nterties havee a significan
nt impact on the bulk traansmission system. Recoognizing gass-
fired generation output and import/expo ort levels aree important parameters for the bulkk
systemm performance for this Region, thee IESO migght undertakee further stuudy to assess
the bulk system adequacy un nder differennt system coonditions. At the launchh of the saidd
studyy, Hydro One will work with the IES SO and soliccit inputs froom other enttities such as
large transmission connected d industrial cuustomers as required.
6.3 Aging Inffrastructuree and Repla
acement Plaan of Majorr Equipment
Hydrro One reviewed the su ustainment and developpment initiaatives that are currentlyy
plann
ned for the replacemen nt of any au utotransform
mers, power transformerrs and highh-
voltage cables. As mention ned in earlieer section, the existingg Wanstead TS will bee
refurb
bished, with
h standard 50
0/66/83 MVA A transformeers and is sccheduled to be completedd
in 20
018. Prior to
o launch of this study, th
he LDCs connnecting to Wanstead TS and Hydroo
One had discussed and com mmitted to converting t he station from 115 kV V to 230 kV
V
Page | 16Needss Assessment Report – Chathaam-Kent/Lamb
bton/Sarnia Reegion Juune 12, 2016
conneecting to 23
30 kV circuuits N21W and N22W. The Needss Assessmennt study hadd
included this com
mmitted projeect in the areea network s etup.
The following su ustainment plans do no ot affect thee results of this Needs Assessmennt
study
y, but are inccluded for co
ompleteness::
The existing g St Andrew ws TS will be refurbisshed with standard 50//66/83 MVA A
transformerss and is scheduled to be completed inn 2023.
The existing g Scott TS will be refurbbished, autottransformer T5 will be replaced likee-
for-like withh a 250MVA A unit and is scheduled too be completted in 2022.
7 RECOMM
MENDATIO
ONS
Bassed on the findings of the Needs Assessment, t he study teeam agrees that Scopingg
Asssessment is not required at this time..
Forr thermal overload of transformer T3 at Kentt TS, considdering there is adequatee
reg
gional supplyy capacity to
o accommod date expectedd load growtth, it is the study team’ss
recommendatio on that no fu
urther region
nal coordinaation is requuired. Furtheer, the studyy
team
m recommen nds Hydro One transmission and thhe relevant distributors to develop a
local plan (“Keent TS – T3 Capacity Limmitation”) foor this need.
8 REFEREN
NCES
i) Planning Proccess Workin ng Group (PPPWG) Reporrt to the Boaard: The Proccess for
Regional Infrrastructure Planning in Ontario – Maay 17, 2013
ii) IE
ESO Ontario o Resource and Transmisssion Assesssment Criterria (ORTAC)) – Issue 5.00
Page | 17Needss Assessment Report - Chathaam-Kent/Lamb
bton/Sarnia Reggion June 12, 2016
APP
PENDIX A: LOAD FORECAS
STS
As noted in Secction 5, consservation annd demand managementt (CDM) annd distributeed
generration (DG)) projects forecast
fo info
ormation proovided by the IESO were used to
determmine the neet load forecast. The fo
orecasted CD DM achieveement in thhe Chatham –
Kent// Lambton/S Sarnia area is summarizzed in Tablee 4 and it represents thhe percentagge
reducction applied
d to gross peak demand at each statioon.
Tablee 4 : CDM fo
orecast for th
he Chatham- Kent/Lambtton/Sarnia Region
2015 2016 201
17 2018 2019 20
020 2021 2022 2023 2024
CDM
M 0.96% 2.04% 2.74
4% 3.84% 4.86% 5.6
68% 6.25% 6.83% 7..22% 7.72%
The DG informattion shown in Table 5 and Table 6 reflects all generation contracts witth
the IESO in the Chatham – Kent/Lamb bton/Sarnia area: FIT, microFIT and CHPSOP P.
Furth
her, the DG information represents th
he cumulativve, effectivee capacity too meeting areea
peak demand.
Page | 18Needs Assessment Rep
port - Chatham-Ken
nt/Lambton/Sarniaa Region June 12, 20116
Tab
ble 5: Chatham-K
Kent/Lambton/S
Sarnia regional coincidental load
d forecast
Historicall Forecast
Station Data 2014 2015 2016 2017 2018 20199 2020 2021 2022 2023 20
024
Duart TS Coincidental Gross Load 14.66 14.87 15.09 15.30 15.52
2 15.74 15.97 16.20 16.43 16..66
Duart TS Coincidental CDM 0.14 0.30 0.41 0.59 0.75 0.89 1.00 1.11 1.19 1.229
Duart TS DG 0.07 0.07 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.225
Duart TS Coincidental Ne
e t Load 14.46 14.45 14.50 14.42 14.46 14.52
2 14.60 14.72 14.84 14.99 15..12
Forest Jura DS Coincidental Gross Load 19.69 20.03 20.37 20.72 21.07
7 21.43 21.80 22.17 22.55 22..93
Forest Jura DS Coincidental CDM 0.19 0.41 0.56 0.80 1.02 1.22 1.36 1.51 1.63 1.777
Forest Jura DS DG 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.02 0.002
Forest Jura DS Coincidental Ne
e t Load 19.36 19.49 19.60 19.80 19.91 20.03
3 20.20 20.42 20.64 20.90 21..14
Kent TS T1/T2 Coincidental Gross Load 71.05 72.70 74.38 76.11 77.88
8 79.70 81.56 83.46 85.42 87..42
Kent TS T1/T2 Coincidental CDM 0.68 1.48 2.04 2.92 3.78 4.53 5.10 5.70 6.16 6.775
Kent TS T1/T2 DG 0.53 1.20 1.20 1.20 1.20 1.20 1.20 1.20 1.20 1.220
Kent TS T1/T2 Coincidental Ne
e t Load 69.45 69.84 70.01 71.14 71.98 72.90
0 73.96 75.25 76.56 78.05 79..47
Kent TS T3/T4 Coincidental Gross Load 40.82 41.72 42.64 43.58 44.55
5 45.54 46.56 47.60 48.67 49..76
Kent TS T3/T4 Coincidental CDM 0.39 0.85 1.17 1.67 2.16 2.59 2.91 3.25 3.51 3.884
Kent TS T3/T4 DG 0.16 0.16 0.16 0.16 0.16 0.16 0.16 0.16 0.16 0.116
Kent TS T3/T4 Coincidental Ne
e t Load 39.95 40.27 40.71 41.31 41.75 42.23
3 42.79 43.49 44.19 45.00 45..76
Lambton TS Coincidental Gross Load 62.25 62.87 63.49 64.12 64.76
6 65.40 66.05 66.70 67.36 68..03
Lambton TS Coincidental CDM 0.60 1.28 1.74 2.46 3.14 3.72 4.13 4.55 4.86 5.225
Lambton TS DG 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.000
Lambton TS Coincidental Ne
e t Load 61.64 61.66 61.59 61.75 61.66 61.61
1 61.68 61.92 62.15 62.50 62..78
Modeland TS Coincidental Gross Load 82.93 83.27 83.61 83.96 84.30
0 84.65 84.99 85.34 85.69 86..04
Modeland TS Coincidental CDM 0.80 1.70 2.29 3.22 4.09 4.81 5.32 5.82 6.18 6.664
Modeland TS DG 0.02 0.16 0.16 0.16 0.16 0.16 0.16 0.16 0.16 0.116
Modeland TS Coincidental Ne
e t Load 82.59 82.11 81.41 81.16 80.57 80.05
5 79.67 79.52 79.36 79.35 79..24
St. Andrews TS Coincidental Gross Load 63.59 63.59 63.59 63.59 63.59
9 63.59 63.59 63.59 63.59 63..59
St. Andrews TS Coincidental CDM 0.61 1.30 1.74 2.44 3.09 3.61 3.98 4.34 4.59 4.991
St. Andrews TS DG 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.01 0.001
St. Andrews TS Coincidental Ne
e t Load 63.59 62.98 62.29 61.84 61.14 60.50
0 59.97 59.61 59.25 59.00 58..68
Wallaceburg TS Coincidental Gross Load 27.67 28.32 28.97 29.65 30.34
4 31.04 31.76 32.50 33.25 34..03
Wallaceburg TS Coincidental CDM 0.27 0.58 0.79 1.14 1.47 1.76 1.99 2.22 2.40 2.663
Wallaceburg TS DG 0.43 0.94 0.94 0.94 0.94 6.09 6.09 6.09 6.09 6.009
Wallaceburg TS Coincidental Ne
e t Load 27.05 26.98 26.80 27.24 27.57 27.93
3 23.18 23.68 24.19 24.76 25..31
Wanstead TS Coincidental Gross Load 28.70 29.17 29.65 30.14 30.63
3 31.13 31.64 32.16 32.69 33..22
Wanstead TS Coincidental CDM 0.28 0.60 0.81 1.16 1.49 1.77 1.98 2.20 2.36 2.556
Wanstead TS DG 0.38 0.38 0.38 0.38 0.38 0.38 0.38 0.38 0.38 0.338
Wanstead TS Coincidental Ne
e t Load 28.24 28.05 28.20 28.46 28.60 28.76
6 28.98 29.28 29.59 29.95 30..28
CTS #1 Transmission Connected Industrial Customer 7.94 7.94 7.94 7.94 7.94 7.94 7.94 7.94 7.94 7.94 7.994
CTS #2 Transmission Connected Industrial Customer 20.82 20.82 20.82 20.82 20.82 20.82
2 20.82 20.82 20.82 20.82 20..82
CTS #3 Transmission Connected Industrial Customer 29.00 29.00 29.00 29.00 29.00 29.00
0 29.00 29.00 29.00 29.00 29..00
CTS #4 Transmission Connected Industrial Customer 112.95 112.95 112.95 112.95 112.95 112.955 112.95 112.95 112.95 112.95 112
2.95
CTS #5 Transmission Connected Industrial Customer 30.89 30.89 30.89 30.89 30.89 30.89
9 30.89 30.89 30.89 30.89 30..89
CTS #6 Transmission Connected Industrial Customer 2.47 2.47 2.47 2.47 2.47 2.47 2.47 2.47 2.47 2.47 2.447
CTS #7 Transmission Connected Industrial Customer 53.89 53.89 53.89 53.89 53.89 53.89
9 53.89 53.89 53.89 53.89 53..89
CTS #8 Transmission Connected Industrial Customer 46.71 46.71 46.71 46.71 46.71 46.71
1 46.71 46.71 46.71 46.71 46..71
Page | 19Needs Assessment Rep
port – Chatham-Keent/Lambton/Sarniaa Region June 12, 2 016
Tab
ble 6 : Chatham--Kent/Lambton//Sarnia regional non-coincidenta
al load forecast
Historica
al Forecast
Station Data 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024
Duart TS Non‐coincidental G ross Load 18.26 18.55 18.72 18.97 19.3
33 19.69 19.94 20.19 20.43 20.68
Duart TS Non‐coincidenta al CDM 0.18 0.38 0.51 0.73 0.94
4 1.12 1.25 1.38 1.47 1.60
Duart TS DG 0.07 0.07 0.25 0.25 0.25
5 0.25 0.25 0.25 0.25 0.25
Duart TS Non‐coincidental Net Load 14.46 18.01 18.10 17.96 17.99 18.1
14 18.32 18.44 18.56 18.71 18.83
Forest Jura DS Non‐coincidental G ross Load 22.58 23.05 23.29 23.70 24.1
19 24.75 25.09 25.50 25.82 26.22
Forest Jura DS Non‐coincidenta al CDM 0.22 0.47 0.64 0.91 1.17
7 1.41 1.57 1.74 1.86 2.02
Forest Jura DS DG 0.02 0.02 0.02 0.02 0.02
2 0.02 0.02 0.02 0.02 0.02
Forest Jura DS Non‐coincidental Net Load 19.36 22.35 22.56 22.63 22.77 23.0
00 23.33 23.51 23.75 23.94 24
4.18
Kent TS T1/T2 Non‐coincidental G ross Load 107.57 114.81 117.04 119.46 122.1
16 124.89 127.48 130.10 132.77 13
35.49
Kent TS T1/T2 Non‐coincidenta al CDM 1.03 2.34 3.21 4.59 5.93
3 7.10 7.97 8.88 9.58 10.46
Kent TS T1/T2 DG 0.53 1.20 1.20 1.20 1.20
0 1.20 1.20 1.20 1.20 1.20
Kent TS T1/T2 Non‐coincidental Net Load 69.45 106.00 111.26 112.63 113.66 115.0
02 116.58 118.30 120.02 121.98 12
23.83
Kent TS T3/T4 Non‐coincidental G ross Load 61.87 65.59 66.79 68.11 69.6
62 71.14 72.55 73.98 75.42 76.90
Kent TS T3/T4 Non‐coincidenta al CDM 0.59 1.34 1.83 2.62 3.38
8 4.04 4.54 5.05 5.44 5.93
Kent TS T3/T4 DG 0.16 0.16 0.16 0.16 0.16
6 0.16 0.16 0.16 0.16 0.16
Kent TS T3/T4 Non‐coincidental Net Load 39.95 61.11 64.08 64.80 65.33 66.0
08 66.93 67.85 68.76 69.82 70.81
Lambton TS Non‐coincidental G ross Load 71.39 72.21 72.55 73.18 74.2
29 75.37 76.00 76.60 77.15 77.72
Lambton TS Non‐coincidenta al CDM 0.69 1.47 1.99 2.81 3.61
1 4.28 4.75 5.23 5.57 6.00
Lambton TS DG 0.00 0.00 0.00 0.00 0.00
0 0.00 0.00 0.00 0.00 0.00
Lambton TS Non‐coincidental Net Load 61.64 70.71 70.73 70.56 70.37 70.6
68 71.09 71.25 71.37 71.59 71.72
Modeland TS Non‐coincidental G ross Load 100.71 101.71 102.71 103.71 104.7
71 104.71 104.71 104.71 104.71 10
04.71
Modeland TS Non‐coincidenta al CDM 0.97 2.08 2.81 3.98 5.08
8 5.95 6.55 7.15 7.56 8.08
Modeland TS DG 0.02 0.16 0.16 0.16 0.16
6 0.16 0.16 0.16 0.16 0.16
Modeland TS Non‐coincidental Net Load 82.59 99.72 99.48 99.74 99.57 99.4
47 98.60 98.00 97.40 97.00 96.47
St. Andrews TS Non‐coincidental G ross Load 62.74 62.74 62.74 62.74 62.7
74 62.74 62.74 62.74 62.74 62.74
St. Andrews TS Non‐coincidenta al CDM 0.60 1.28 1.72 2.41 3.05
5 3.57 3.92 4.28 4.53 4.84
St. Andrews TS DG 0.01 0.01 0.01 0.01 0.01
1 0.01 0.01 0.01 0.01 0.01
St. Andrews TS Non‐coincidental Net Load 63.59 62.13 61.46 61.02 60.33 59.6
69 59.17 58.81 58.45 58.21 57.90
Wallaceburg TS Non‐coincidental G ross Load 41.86 42.84 43.86 44.80 45.8
82 46.95 48.10 49.19 50.28 51.40
Wallaceburg TS Non‐coincidenta al CDM 0.40 0.87 1.20 1.72 2.23
3 2.67 3.01 3.36 3.63 3.97
Wallaceburg TS DG 0.43 0.94 0.94 0.94 0.94
4 6.09 6.09 6.09 6.09 6.09
Wallaceburg TS Non‐coincidental Net Load 27.05 41.04 41.03 41.72 42.15 42.6
66 38.19 39.00 39.74 40.56 41.34
Wanstead TS Non‐coincidental G ross Load 34.10 34.68 35.29 35.68 36.2
22 36.99 37.75 38.30 38.83 39.34
Wanstead TS Non‐coincidenta al CDM 0.33 0.71 0.97 1.37 1.76
6 2.10 2.36 2.61 2.80 3.04
Wanstead TS DG 0.38 0.38 0.38 0.38 0.38
8 0.38 0.38 0.38 0.38 0.38
Wanstead TS Non‐coincidental Net Load 28.24 33.40 33.59 33.95 33.94 34.0
08 34.51 35.01 35.31 35.65 35.93
CTS #1 Transmission Connected Ind
dustrial Customer 7.94 7.94 7.94 7.94 7.94 7.94
4 7.94 7.94 7.94 7.94 7.94
CTS #2 Transmission Connected Ind
dustrial Customer 20.82 20.82 20.82 20.82 20.82 20.8
82 20.82 20.82 20.82 20.82 20.82
CTS #3 Transmission Connected Ind
dustrial Customer 29.00 29.00 29.00 29.00 29.00 29.0
00 29.00 29.00 29.00 29.00 29.00
CTS #4 Transmission Connected Ind
dustrial Customer 112.95 112.95 112.95 112.95 112.95 112.9
95 112.95 112.95 112.95 112.95 11
12.95
CTS #5 Transmission Connected Ind
dustrial Customer 30.89 30.89 30.89 30.89 30.89 30.8
89 30.89 30.89 30.89 30.89 30.89
CTS #6 Transmission Connected Ind
dustrial Customer 2.47 2.47 2.47 2.47 2.47 2.47
7 2.47 2.47 2.47 2.47 2.47
CTS #7 Transmission Connected Ind
dustrial Customer 53.89 53.89 53.89 53.89 53.89 53.8
89 53.89 53.89 53.89 53.89 53.89
CTS #8 Transmission Connected Ind
dustrial Customer 46.71 46.71 46.71 46.71 46.71 46.7
71 46.71 46.71 46.71 46.71 46.71
Page | 20Needss Assessment Report - Chathaam-Kent/Lamb
bton/Sarnia Reggion June 12, 2016
APP
PENDIX B: KEY TERMS AND
D DEFINIITIONS
Key terms and deefinitions asssociated with
h this Needss Assessmennt are cited here.
Norm
mal Supply Capacity
The maximum lo quipment maay be subjeccted to conttinuously
oading that electrical eq
underr nominal ambient condditions suchh that no acccelerated losss of equipm
ment life
would be expecteed.
Coincident Peak k Load
The electricity demand at in ndividual faccilities at thhe same poinnt in time when the
total demand of the region orr system is att its maximuum.
Conttingency
The prevalence of abnormal conditions such that ellements of thhe power syystem are
not av
vailable.
Consservation an
nd Demand Managemeent (CDM)
Progrrams aimed at using mo ore of one ty
ype of energgy efficientlyy to replace an inefficiennt
use of another to
o reduce ov verall energy
y use, and i nfluencing the amount or timing of
custo
omers’ use off electricity.
Distrributed Genneration (DG G)
Electtric power generation equipment that suppliess energy too nearby cuustomers witth
generration capaciity typically ranging from
m a few kW
W to 25 MW.
Grosss Load
Amou unt of electtricity that must be gen
nerated to meet all custtomers’ needds as well as
delivery losses, not considerring any gen neration inittiatives suchh as CDM and DG. It is
usuallly expressedd in MW or MVA.
Limiited Time Rating (LTR R)
A hig
gher than nam
meplate ratin
ng that a tran
nsformer cann tolerate forr a short period of time
Loadd Forecast
Prediiction of the load or dem
mand customeers will makke on the elecctricity systeem
Page | 21Needss Assessment Report – Chathaam-Kent/Lamb
bton/Sarnia Reegion Juune 12, 2016
Net Load
Net of generation
n (e.g. CDM and DG) deeducted from
m the Gross load
Non--Coincident Peak Load d
The maximum electricity deemand at an individual facility. Unnlike the coinncident peakk,
non-ccoincident peeaks may occcur at differrent times foor different fa
facilities.
Peak k Load
The maximum lo oad consumeed or producced by a uniit or group of units in a stated periood
of tim
me. It may be the maxim mum instantaaneous load or the maxim
mum averagge load over a
desiggnated interv
val of time.
Weatther Correccted Data
Loadd data that is adjusted to account for extreme weeather condittions using an adjustmennt
factorr.
Page | 22Needss Assessment Report – Chathaam-Kent/Lamb
bton/Sarnia Reegion Juune 12, 2016
APP
PENDIX C: ACRON
NYMS
BES Buulk Electric System
BPS Buulk Power Syystem
CDMM Coonservation and Demand d Managemeent
CIA Cuustomer Imp pact Assessm ment
CGS Cuustomer Gen nerating Stattion
CTS Cuustomer Tran nsformer Staation
DESNN Du ual Element Spot Netwo ork
DG Diistributed Geeneration
DSC Diistribution System Codee
GTAA Grreater Toronnto Area
IESO
O In
ndependent Electricity Sy ystem Operaator
IRRPP In
ntegrated Reg gional Resou urce Planninng
kV Kiilovolt
LDC Loocal Distribu
ution Compaany
LTR Liimited Time Rating
LV Loow-voltage
MW Megawatt
MVA A Mega Volt-Am mpere
NA Neeeds Assessm ment
NERC No orth American Electric Reliability Corporation
NGS Nu uclear Generrating Statio
on
NPCCC No ortheast Pow
wer Coordinaating Counciil Inc.
OEB On ntario Energ
gy Board
ORTA AC On ntario Resou
urce and Traansmission Assessment Criteria
PF Po
ower Factor
PPW
WG Pllanning Proccess Working g Group
RIP Reegional Infraastructure Pllanning
SIA Sy
ystem Impacct Assessmen nt
SS Sw
witching Staation
TS Trransformer Station
TSC Trransmission System Cod de
ULTCC Un nder Load Tap Changer
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