Transcript Resource Owner Presentation

Using Infrared to
Proactively Maintain the Distribution
System
Ben J Carranza
Objectives
• Proactively address potential equipment failures
• Positively impact corporate SAIFI goal
• Develop processes to track:
– Survey costs
–
Repair costs
–
Avoided SAIFI
–
Missed opportunities
History
2000
2001
One camera
2002
2003
Two
Four
Part time effort
Full time effort
Request initiated
Annual schedule
Full circuit surveys
2004
Equipment surveys
Operator training
INFR notifications
Glower process
Survey Impacts
Outages Preventable with IR
Avoided SAIFI
0.09
0.25
0.2
0.21
0.2063
0.08
0.07
0.167
0.06
SAIFI
0.15
0.1
0.05
0.04
0.03
0.05
0.02
0.01
0
0
2002
2003
2004
2002
Surveys
400
350
300
250
200
150
100
50
0
2000
2001
2002
2003
2004
2003
Survey Costs
• Average survey cost per circuit (salary & burden)
– $475.00
• Average repair cost per critical item
– $1,100.00
• Cost/performance projections (per 0.1 avoided SAIFI)
– Repair = $105,000
– Survey = $57,000
– Total = $162,000
Circuit Selection
Customer count
X
Circuit loading
=
Weighted System
(rank ascending)
X
Outage History
(preventable with IR)
Selection Considerations
2004 Service Center IR Circuits
27




Includes all S/Cs
Assigned by % of circuits
in system
Vegetation management
Currently on 5 year
survey cycle
34
39
45
26
9
8
13
28
11
8
9
19
24
BAY
BEL
BPT
CYP
FTB
GAL
GPT
HOC
HUM
KTY
MPK
SPB
SOH
SUG
Field Survey Process
• Start at substation
• Includes all getaways in substation
• Mid span splices & jumpers in first line section
• All primary circuit equipment
One Line Diagram
Field Survey Notes
Report Criteria
Equipment Criteria:
• Watch List
75 - 99ºF CTD
Recorded & on file
• Critical
>100ºF CTD
Inspect\Repair ASAP
For ‘04 the following criteria was added for equipment problems that are
encased or blocked from direct view
• Indirect
Reference = 100ºF
>20ºF CTD
Inspect\Repair ASAP
SWITCH EXAMPLE
CTD = 200ºF
Hot Spot = 300ºF
Glower Process
Urgent process to communicate, to multiple departments,
problems that are at severe risk of failure
• Targets >500F must be visually inspected with binoculars
• If target is physically damaged or glowing:
• Immediately contact Distribution Control (Dispatch)
• Issue SAP & urgent email notifications
Glower Example #1
Bolted Connection on PTS
(melting aluminum, hot spot >1200F)
Glower Example #2
Clamp Type Connection on TP
(Jumper melted from bracket & hung on
hook stick disconnect ring)
Reports
Issued for “Critical” primary equipment
Includes:
• Infrared & jpeg images
• Detail equipment information
• Visual problems like broken cross-arms and insulators
Does not Include:
• “Watch List” items kept on file; revisited 1 year later
Report Example
SAP Notifications
• Mainframe application
• Permanent record
• Provides link to work order data
• Consistent & accessible across company
Monthly Progress Report
TOTAL
BAY
BPT
GAL
GPT
HUM
MPK
SOH
Surveys
Complete
0
0
0
0
2
5
2
Notifs
Issued
0
0
0
0
0
3
0
System
SAIFI
0.00000
0.00000
0.00000
0.00000
0.00000
0.00272
0.00000
MONTH
W/O
Issued
5
0
0
0
0
0
0
EAST
9
3
0.00272
5
3
9
$659
154
86
0.08085
24
8
10
$680
BEL
CYP
FTB
HOC
KTY
SBR
SUG
3
0
2
4
0
6
2
5
0
0
2
0
4
0
0.00532
0.00000
0.00000
0.00223
0.00000
0.00598
0.00000
0
2
0
0
0
0
1
4
0
0
0
0
0
0
5
0
0
0
0
0
0
$860
$0
$0
$0
$0
$0
$0
61
6
10
25
8
19
45
35
6
4
11
5
20
34
0.03020
0.01295
0.00477
0.00958
0.00748
0.02104
0.03946
24
2
3
5
0
0
1
8
0
0
1
0
0
0
5
0
0
1
0
0
0
$675
$0
$0
$293
$0
$0
$0
WEST
17
11
0.01354
3
4
5
$860
174
115
0.12547
35
9
6
$484
SYSTEM
26
14
0.01625
8
7
14
$760
328
201
0.20633
59
17
16
$582
W/O
Avg Repair Avg Repair
Closed
Weeks
Cost
1
6
$600
0
0
$0
0
0
$0
0
0
$0
2
3
$718
0
0
$0
0
0
$0
YEAR TO DATE
Surveys Notifs System W/O
W/O Avg Repair Avg Repair
Complete Issued SAIFI Issued Closed Weeks
Cost
35
18
0.01130
9
2
4
$805
7
5
0.00613
1
2
4
$755
9
4
0.00238
3
0
0
$0
30
16
0.01937
2
0
0
$0
15
4
0.00571
5
4
2
$479
26
12
0.01107
0
0
0
$0
32
27
0.02489
4
0
0
$0
Pole Fires
Pole Fires (Cont.)
Switch Example #1
Bolted Connection
Switch Example #2
Switch Body
Switch Example #3
Hinge Pin Assembly
Misc. Example #1
Primary Crimp Splice
Misc. Example #2
Cap Oil Switch & Bushing Connector
Misc. Example #3
Neutral Current
Misc. Example #4
Secondary Pedestal, URD
Any Questions???
Contact Information
Distribution System Reliability
• Ben J. Carranza
(713) 945-6807
[email protected]
• Brandt Gonzales (Lvl. 1 Certified IR Thermographer)
(713) 945-6457
[email protected]
• R. Brent Williams
(713) 945-6063
[email protected]