North Region Reliability Engineering 1 Vernon Hills Reliability Update October 18, 2011
Nov 10, 2014
North Region Reliability Engineering 1
Vernon Hills Reliability Update
October 18, 2011
North Region Reliability Engineering 2
Engineering Reliability Reviews
• Two-pronged approach to driving reliability reviews and “leading”engineers to problem areas
– Reliability reviews based on yearly performance• Per ICC, ComEd develops and reports on circuit SAIFI (frequency of outages)
i.e. where are current unfavorable trends
• ComEd develops statistics around three year average SAIFI numbers to identify chronic unfavorable trending on any circuits
– Reliability reviews based on “pocket area” information• ComEd has statistics and information on outages that are not “wide-spread” but
impact “pockets” of customers
• It is not uncommon to have a circuit that performs very well as a whole but does have pockets of customers that experience chronic outages
• In addition, ComEd utilizes feedback from village administration on “pocket area” issues – we want to hear about these so we can address them
North Region Reliability Engineering reviews data and information on approximately 1,800 circuits annually to address opportunities for improvements and corrective actions for the entire circuit or for pocket areas.
North Region Reliability Engineering reviews data and information on approximately 1,800 circuits annually to address opportunities for improvements and corrective actions for the entire circuit or for pocket areas.
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Fuse
Fuse
FuseFuse
Transformer
X
“Pocket area”
Transmission Line/Substation
Main line ofcircuit
Substation circuit breaker
Engineering Reliability Reviews
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System Performance Improvements
Trip saver: Fuse that will auto reset for transient faultsi.e. branch bounces off wire, fuse resets itself and avoids sustained outage
URD cable replacement: Cable that has shown unfavorable trends of performance and will be replaced in the same route as the old cable
Targeted Tree Trimming:
• Standard trimming – 10 foot zone in all directions around primary conductors for 12,000-volt and below circuits
• Targeted trimming – minimize over-hang, extend beyond standard zone above primary conductors, elimination of dead branches and “soft-wood” species
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System Performance Improvements
Standard construction with bare conductors create a “canopy for tree branches
HENDRIX construction has covered conductors and reduces the “surface” footprint such not to provide a canopy for branches
Hendrix cable: A overhead installation of covered, bundled primary wire that can withstand tree branches and small tree contact
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Vernon Hills – A6618Improvements include
• Installation of HENDRIX spacer cable A overhead installation of covered, bundled primary wire that can withstand tree branches and small tree contact. Proven to reduce outages by 75-85%.
Enhanced tree trimming willbe performed in this area
3500’ feet
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Vernon Hills – A6618Improvements include
Install 140A or 200A fuses with bypass disconnects to isolate all customers from tree outages down-stream
Enhanced tree trimming willbe performed in this area
Additional fuse
Additional fuse
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Vernon Hills – Feeder A6618Improvements include
• Installation of an automatic recloser to reduce outage exposure to customers due to tree related issues
Automaticreclosingdevice
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Vernon Hills – A6616Improvements include
• Replace URD cable
150’ feet
400’ feet
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Vernon Hills – A6616Improvements include
• Enhanced tree trimming on main line
Enhanced tree trimming willbe performed in this area
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Vernon Hills – A6610Improvements include
• Replace underground cable in Hawthorne Center
400’ feet
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Vernon Hills – A666YImprovements include
• Infrared inspect cable joints (splices) located in existing manholes to identify anomalies and make associated replacements as required
location of manholes
location of manholes
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Vernon Hills – A668Improvements completed in 2010
• Replace underground cable and install new switchgear to provide switching flexibility to the mall
S
V
V
V
New switching cubicle
V
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Vernon Hills – A668Improvements completed in 2010
• Replace underground cable (mainline)
S
S
S
S
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Vernon Hills – A6628Improvements completed and in-progress
• Replace underground cable
replaced
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Vernon Hills – A6628Improvements completed and in-progress
• Replace underground cable
replaced
in-progress
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Vernon Hills – A6628Improvements completed and in-progress
• Replace underground cable
replaced
in-progress
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Vernon Hills – Distribution Automation
• Distribution Automation will serve approximately 4700 Vernon Hills customers (43% of the Village)
• One full-loop scheme is in service on feeders A6611/ C0923
• A second full-loop scheme will be livened by December 2011 on feeders A668/ A664
• A full loop scheme (in the engineering stage) on feeders A666Y/ A122, will be built in 2012
Circuit #1 Circuit #2
Substation Circuitbreaker
Substation Circuitbreaker
Automated switch #2(normally open)
Automated switch #1(normally closed)
Automated switch #3(normally closed)
Full-loop, bi-directional automation scheme
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Smart Grid – Future Model
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PowerCo
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PowerCo
Smart Grid will deliver enhanced reliability and create new opportunity for customer control of energy usage and spend
Smart Meter• Report usage by time• Report outages in
real-time• Remote disconnect• HAN gateway
Distributed Generation• Micro-generation• Solar• Wind• Net metering
Home area network• Real-time usage and
pricing statistics• Usage – aware
appliances
Delivery Automation, Sensors and Controls• Real-time reporting of
status and outages• Automated controls
of relays and reclosers
• Field force management
Transmission Sensors and Automation• Power factor
monitoring• Optimized switching of
capacitor banks
Data collection, processing and back office• Automated billing• Disconnection of
unoccupied / unpaid• Daily usage stats• Time of Use pricing
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Vernon Hills
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Vernon Hills