Using Infrared to Proactively Maintain the Distribution System Ben J Carranza
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Using Infrared to Proactively Maintain the Distribution System Ben J Carranza
description
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. - PowerPoint PPT Presentation
Transcript of Using Infrared to Proactively Maintain the Distribution System Ben J Carranza
Using Infrared toProactively 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 2002 2003 2004One camera
Part time effort
Full circuit surveys
Two Four
Full time effort
Equipment surveys
Operator training
INFR notifications
Glower process
Request initiated Annual schedule
Survey Impacts
Avoided SAIFI
0.167
0.2063 0.21
0
0.05
0.1
0.15
0.2
0.25
2002 2003 2004
Surveys
0
50
100
150
200
250
300
350
400
2000 2001 2002 2003 2004
Outages Preventable with IR
0
0.01
0.02
0.03
0.04
0.05
0.06
0.07
0.08
0.09
2002 2003
SA
IFI
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 Circuit loading Outage History(preventable with IR)X X
Weighted System(rank ascending)
=
Selection Considerations
Includes all S/Cs Assigned by % of circuits
in system Vegetation management Currently on 5 year
survey cycle
2004 Service Center IR Circuits
34
45
9
8
13
11
24199
8
28
26
39
27
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 >20ºF CTD Inspect\Repair ASAP
CTD = 200ºF
Hot Spot = 300ºFReference = 100ºF SWITCH EXAMPLE
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
Surveys Notifs System W/O W/O Avg RepairAvg Repair Surveys Notifs System W/O W/O Avg Repair Avg RepairComplete Issued SAIFI Issued Closed Weeks Cost Complete Issued SAIFI Issued Closed Weeks Cost
BAY 0 0 0.00000 5 1 6 $600 35 18 0.01130 9 2 4 $805BPT 0 0 0.00000 0 0 0 $0 7 5 0.00613 1 2 4 $755GAL 0 0 0.00000 0 0 0 $0 9 4 0.00238 3 0 0 $0GPT 0 0 0.00000 0 0 0 $0 30 16 0.01937 2 0 0 $0HUM 2 0 0.00000 0 2 3 $718 15 4 0.00571 5 4 2 $479MPK 5 3 0.00272 0 0 0 $0 26 12 0.01107 0 0 0 $0SOH 2 0 0.00000 0 0 0 $0 32 27 0.02489 4 0 0 $0
EAST 9 3 0.00272 5 3 9 $659 154 86 0.08085 24 8 10 $680
BEL 3 5 0.00532 0 4 5 $860 61 35 0.03020 24 8 5 $675CYP 0 0 0.00000 2 0 0 $0 6 6 0.01295 2 0 0 $0FTB 2 0 0.00000 0 0 0 $0 10 4 0.00477 3 0 0 $0HOC 4 2 0.00223 0 0 0 $0 25 11 0.00958 5 1 1 $293KTY 0 0 0.00000 0 0 0 $0 8 5 0.00748 0 0 0 $0SBR 6 4 0.00598 0 0 0 $0 19 20 0.02104 0 0 0 $0SUG 2 0 0.00000 1 0 0 $0 45 34 0.03946 1 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
MONTH YEAR TO DATETOTAL
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???
Distribution System Reliability
• Ben J. Carranza
(713) 945-6807
• Brandt Gonzales (Lvl. 1 Certified IR Thermographer)
(713) 945-6457
• R. Brent Williams
(713) 945-6063
Contact Information
