London Hydro Tour
Transcript of London Hydro Tour
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London Hydro’s Role in
the Electricity Market
IEEE Women in Engineering
London Hydro Tour Event April 23, 2013
Jagoda Borovickic, P.Eng.
Cristina Terek, P.Eng.
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Agenda
• London Hydro Overview
• London Hydro’s Role as a Distributor of Electricity
• Asset Management and Reliability of our System
• Planning, Design and Operation of our System
• Renewable Generation
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History of London Hydro
• 1910 – Electricity brought to London
• 1993 – Water, Parks and Recreation transferred to the
City
• 2000 – London Hydro incorporated under Ontario
Business Corporation Act
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London Hydro operates in a
regulated environment
• Distribution System Code as per the Ontario Energy
Board
• Ontario Regulation 22/04 – “Electrical Distribution Safety”
• The Green Energy Act
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London Hydro’s role in the
supply chain
Owned by
London
Hydro
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London Hydro has significant
experience and knowledge
• 7th largest out of 80 Ontario utilities
• 280 employees (14 licensed Engineers)
• 148,000 customers
• Record peak demand of 717 MW (in 2011)
• 1,365 km of overhead line circuitry
• 1,480 km of underground cable circuitry
• 39 substations
• 15,200 distribution transformers
• 29,000 distribution poles
• 125 automated switches
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Asset Management
• Items Considered:
– Age and Life Expectancy
– Plant Condition
– Inspection Plan
– Risk Assessment
– Maintenance/Refurbishment and Replacement
Programs
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Asset Management
Pole Installation Dates
0
200
400
600
800
1000
1200
1400
1940
1942
1944
1946
1948
1950
1952
1954
1956
1958
1960
1962
1964
1966
1968
1970
1972
1974
1976
1978
1980
1982
1984
1986
1988
1990
1992
1994
1996
1998
2000
2002
2004
2006
2008
Year of Installation
Nu
mb
er
of
Po
les
Approximately 11,400 poles
w ill likely need to be replaced
over the next 15 years.
Demographics of Asset
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Asset Management Condition of Asset
Good
57%
Fair
33%
Poor
10%
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Asset Management Regular Field Inspections and Audits
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Asset Management Risk Assessment
Broken Insulator Trends and Impact
0
2000
4000
6000
8000
10000
12000
14000
16000
18000
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009
Reporting Year
Se
rvic
e In
terr
up
tio
n, In
Cu
sto
me
r H
ou
rs
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Reliability
Reliability involves:
• The analysis of outages (“no hydro”)
• Risk assessment
• Problem solving to prevent future occurrences
• Working with manufacturers to make designs more reliable
• Working with third party test facilities
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Outage Duration Performance
SAIDI
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
19941995
19961997
19981999
20002001
20022003
20042005
20062007
20082009
20102011
Av
era
ge
Cu
sto
me
r H
ou
rs o
f In
terr
up
tio
n
SAIDI History Linear (SAIDI History)
Outage Frequency Performance
SAIFI
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
19941995
19961997
19981999
20002001
20022003
20042005
20062007
20082009
20102011
Av
era
ge
Ou
tag
e F
req
ue
nc
y
SAIFI History Linear (SAIFI History )
Reliability
Performance
Analysis
Reliability
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Reliability
Defective
Equipment
Analysis
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Silicone Injection
of Cables
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Reliability Root Cause Analysis
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System Planning
Hydro One Network Inc.
Transformer Stations:
– Buchanan
– Clarke
– Highbury
– Nelson
– Talbot
– Wonderland
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System Planning
0
200
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1200
1940
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2008
2012
2016
2020
2024
2028
Year
MW
60
Min
ute
Dem
an
d
Actual Load - MW
Linear RegressionLoadHi - Forecast
Avg - Forecast
Lo - Forecast
Long Term Projected Load Growth
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System Planning
Residential
Indust
rial
C Clarke TS
T Talbot TS
H Highbury TS
B Buchannan TS
W Wonderland TS
2006
2007
2008
W
T
H
C
B
2009
2010
Build Dates
Spatial Area Forecasts to
determine areas requiring
additional capacity
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Engineering Design
Construction
Standards
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Engineering Design
Equipment Specifications
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Operation and Maintenance
• Physical Obstacles
• Subsurface unknowns
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Operation and Maintenance
• Difficult locations
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Project Scheduling
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Downtown Network
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Downtown Network
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the number of people whose
jobs depend on the network
being up and running
the peak load
the number of customers served
Downtown Network
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Operational Emergencies
At approximately 3:00 a.m. October 31, 2007 a twelve inch water main
broke at the intersection of Dundas and Wellington
6:10 a.m. Sinkhole emerges
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Operational Emergencies
• All 5 Feeders Supplying
Downtown affected
• 225 tons of sand, asphalt & debris
removed from site
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Operational Emergencies
• 1 km of rebar
• 40 Cubic Meters of
Concrete
• 2 km of duct
• 200 m of Duct Bank
• 2.7 km of Secondary
cables, 250 Connections
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Operational Emergencies
• 0.5 km of Primary
Cable
• 20 Primary Lead
Splices
• 8 hours per splice
• 4 completed in 1 day
• 250 switching
operations
• 21 continuous days of
work
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Broken Pole – Wires Intact
Pole hit by
Drunk
Driver
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Broken Pole/Wires Down
Wind
Damage
Electrical
And
Physical
Hazard
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Operational Emergencies
Damage on St. James St., London – 1976
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Renewable Generation in London
• Under Net Metering:
– 5 customers generating up to 20 kW solar power
• Under microFIT:
– Approx. 125 customers (residential and commercial) up to 1,000 kW
– Over 70 applications approved for approx. 600 kW more solar power
– Over 800 applications submitted to OPA in London in total
ALL MICRO-GENERATION
PROJECTS ARE
SOLAR PV
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Renewable Generation in London
Bio-Gas
Storm Fisher Bio-Gas plant 2.8 MW (SOP-FIT)
- Commercial Operation Day in Sept. 2010
Solar PV
11 FIT solar generators connected for a total of 1.6 MW
- 16 additional connections pending capacity allocation
Water Fanshawe Dam generating up to 610 kW - retail embedded generator (“grandfathered”)
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Renewable generation in Ontario
IESO tracks the renewable generation
projects connected to transmission systems
(>50 kV):
• 1,100 MW wind power connected
• 6,700 MW hydro power connected
• No solar power connected
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Solar related opportunities
• Non-rooftop > 100 kW only on
Class 3 Lands or higher,
according to the Ministry of
Agriculture
• Scarce areas within C of L where
such projects could develop
• Agricultural land in Ontario to be
used solely for its purpose
• Real estate availability for ground-
mounted solar panels
10 acres 1 MW
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Wind related opportunities
• No wind power generation applicants in London
• OPA encourages wind power generation
• Not reliable for peak shaving
• Great for added renewable energy in Ontario
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Questions?