Update on the
Electric Distribution
Master Plan
City Council
April 25, 2023
WATER AND
POWER
BWP’s MISSION
Reliability
BWP’s MISSION
Reliability
Affordability
BWP’s MISSION
Reliability
Affordability
Sustainability
ELECTRIC DISTRIBUTION SYSTEM
Customer
Meter
Substation Distribution
Lines
Distribution
Equipment
ELECTRIC DISTRIBUTION SYSTEM
6 4.16 kV
Substations
6 12.47 kV
Substations
4 Switching
Stations
2 Customer
Substations
ELECTRIC DISTRIBUTION SYSTEM
33 Miles
69 kV Lines
44 Miles
34.5 kV Lines
149 Miles
12.47 kV Lines
5,825
Distribution
Transformers
10,740
Poles
53,234
Meters
186 Miles
4.16 kV Lines
DISTRIBUTION MASTER PLAN
• Future system analysis
• Existing system analysis
• Identify issues
• Recommend mitigations
TODAY
TOMORROW
!
EXISTING SYSTEM ANALYSIS
• Overall the system is in good condition
• The older 4kV system continues to be
stressed as a result of load growth
Feeder loading violations
Voltage violations
FUTURE SYSTEM ANALYSIS
Contributing factors
• 4kV to 12kV conversion
• Load growth due to construction of new
developments
• Load growth due to electric vehicles (EV)
• Adoption of solar photovoltaic (PV)
generation
FUTURE SYSTEM ANALYSIS
4kV-12kV conversion
6 4.16 kV
Substations
2 4.16 kV
Substations
(4) 4kV stations over 60 years old
FUTURE SYSTEM ANALYSIS
Load growth
• New developments
• Building electrification
• Electric vehicles
FUTURE SYSTEM ANALYSIS
Solar generation
Solar PV adoption
FUTURE SYSTEM ANALYSIS
Summary of violations
• Substation transformer loading
• Distribution feeder loading
• Distribution feeder power factor
• Distribution feeder voltage
• Transmission line loading
MITIGATION RECOMMENDATION
ConversionsContinue
4kV-12kV
conversions
MITIGATION RECOMMENDATION
ConversionsContinue
4kV-12kV
conversions
Upgrade conductors
Reduce line loading
Phase balancing
MITIGATION RECOMMENDATION
ConversionsContinue
4kV-12kV
conversions
Upgrade conductors
Reduce line loading
Phase balancing
Upgrade poles
Upgrade transformers
MITIGATION RECOMMENDATION
ConversionsContinue
4kV-12kV
conversions
Upgrade conductors
Reduce line loading
Phase balancing
Upgrade poles
Upgrade transformers
Improve voltage
Insert GIS MAP here
4kV-12kV Conversions:
today
4kV-12kV Conversions:
20-year plan
MITIGATION RECOMMENDATION
New 12kV capacity
• Upgrade transformers
at San Jose Substation
• Construct new 12kV
substation in the
Downtown Burbank
District
LOAD FORECAST
331
394
465 471
0 50
100
150
200
250
300
350
400
450
500
Base loading 5-year Loading 10-year Loading 20-year loading Loading (MVA)
CAPITAL IMPROVEMENT PLAN
$ $
Retire old
assets
Reduce
maintenance
costs
Maintain high
reliability
Reduce
energy losses
CAPITAL IMPROVEMENT PLAN
Cost
$-
$10,000,000
$20,000,000
$30,000,000
$40,000,000
$50,000,000
$60,000,000
$70,000,000
Years 1-5 Years 6-10 Years 11-20
BWP’s RELIABILITY
Insert recent SAIDI comparison chart from Ayman
System Average Interruption Duration Index (SAIDI)
2021 Industry Benchmark
Minutes
Utilities
BWP, 16.40 minutes Mean, 74 minutes
BWP’s RELIABILITY
0.39 0.58 0.60
0.69 0.77
0.86 1.02
1.17 0.00
0.20 0.40
0.60 0.80
1.00 1.20
1.40 Burbank Anaheim SDG&E Riverside LADWP SCE PG&E Glendale 5 Year Average 2017-2021
Annual Outages
System Average Interruption Frequency Index (SAIFI)
CONTACT
Bobola Akerson
Senior Electrical Engineer
(818) 238-3575 office
[email protected]