E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR Barcelona 12-15 May 2003 1...
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Transcript of E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR Barcelona 12-15 May 2003 1...
![Page 1: E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR Barcelona 12-15 May 2003 1 Successful implemented Condition Based Maintenance for switchgear.](https://reader035.fdocuments.in/reader035/viewer/2022070413/5697bf941a28abf838c90595/html5/thumbnails/1.jpg)
1E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR
Barcelona 12-15 May 2003
Successful implemented Condition Based Maintenance for switchgear
Presenter: E.R.S. Groot
Session No 1, Paper No 14
Edwin R.S. GROOTNuon InfraCore
Edward GULSKIDelft University
Abe van DAMEneco Netbeheer
Frank J. WESTER Nuon InfraCore
The Netherlands
![Page 2: E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR Barcelona 12-15 May 2003 1 Successful implemented Condition Based Maintenance for switchgear.](https://reader035.fdocuments.in/reader035/viewer/2022070413/5697bf941a28abf838c90595/html5/thumbnails/2.jpg)
2E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR
Barcelona 12-15 May 2003
A guided tour through the implementation process of CBM
(step by step)
based on questions and problems we dealed with
![Page 3: E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR Barcelona 12-15 May 2003 1 Successful implemented Condition Based Maintenance for switchgear.](https://reader035.fdocuments.in/reader035/viewer/2022070413/5697bf941a28abf838c90595/html5/thumbnails/3.jpg)
3E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR
Barcelona 12-15 May 2003
Where did we start?? (more then 60 different type of switchgear)
Based on the selection criteria:
• Current maintenance costs
• Current outage time for maintenance
• Risk for maintenance induced failures
• Population size
• Age and expected lifetime
• Current failure behaviour and frequency
…….we started with a minimum oil breaker
![Page 4: E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR Barcelona 12-15 May 2003 1 Successful implemented Condition Based Maintenance for switchgear.](https://reader035.fdocuments.in/reader035/viewer/2022070413/5697bf941a28abf838c90595/html5/thumbnails/4.jpg)
4E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR
Barcelona 12-15 May 2003
What are critical components of this switchgear ??
We applied an FMECA approach and weighted each component
• Failure frequency (score 0,1,2)
• Impact of failure on energy supply (score 1,2,3)
• Corrective costs (score 1,2,3)
• Environmental impact (score 1,2)
![Page 5: E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR Barcelona 12-15 May 2003 1 Successful implemented Condition Based Maintenance for switchgear.](https://reader035.fdocuments.in/reader035/viewer/2022070413/5697bf941a28abf838c90595/html5/thumbnails/5.jpg)
5E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR
Barcelona 12-15 May 2003
FMECA register (screen dump)
![Page 6: E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR Barcelona 12-15 May 2003 1 Successful implemented Condition Based Maintenance for switchgear.](https://reader035.fdocuments.in/reader035/viewer/2022070413/5697bf941a28abf838c90595/html5/thumbnails/6.jpg)
6E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR
Barcelona 12-15 May 2003
The outcome of the FMECA exercise resulted in a new
optimised maintenance program …..
A mixture of maintenance, inspections and measurement activities were focused on critical components only
This optimised maintenance program resulted in the first cost reduction of 29%
![Page 7: E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR Barcelona 12-15 May 2003 1 Successful implemented Condition Based Maintenance for switchgear.](https://reader035.fdocuments.in/reader035/viewer/2022070413/5697bf941a28abf838c90595/html5/thumbnails/7.jpg)
7E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR
Barcelona 12-15 May 2003
How do we:- control and update the new maintenance program in the field- support the electrician with actual normsand instructions- guaranty the continuation of feed back of field experience
![Page 8: E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR Barcelona 12-15 May 2003 1 Successful implemented Condition Based Maintenance for switchgear.](https://reader035.fdocuments.in/reader035/viewer/2022070413/5697bf941a28abf838c90595/html5/thumbnails/8.jpg)
8E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR
Barcelona 12-15 May 2003
Therefore we developed the Inspector software tool:
![Page 9: E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR Barcelona 12-15 May 2003 1 Successful implemented Condition Based Maintenance for switchgear.](https://reader035.fdocuments.in/reader035/viewer/2022070413/5697bf941a28abf838c90595/html5/thumbnails/9.jpg)
9E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR
Barcelona 12-15 May 2003
Field support with actual norms and instructions
![Page 10: E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR Barcelona 12-15 May 2003 1 Successful implemented Condition Based Maintenance for switchgear.](https://reader035.fdocuments.in/reader035/viewer/2022070413/5697bf941a28abf838c90595/html5/thumbnails/10.jpg)
10E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR
Barcelona 12-15 May 2003
How do we handle the increased amount of data like:
• Measurement results
• Inspection results
• Maintenance information
• Failure information
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11E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR
Barcelona 12-15 May 2003
We developed the I-Core database
typetime
analysis
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12E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR
Barcelona 12-15 May 2003
The I-Core database for:
• storage of data (measurement and inspection results, failure information etc)
• optimising norms and criteria
• research of aging mechanisms
• improvement and optimisation of the condition based maintenance program
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13E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR
Barcelona 12-15 May 2003
Example: correlation between moisture level in oil and aging of coqolite
0
5
10
15
20
25
30
35
40
0 5 10 15 20 25 30 35
Moisture level (ppm)
Tang
ensD
elta
(%)
Coqolite is good
Coqolite has to be dried
Coqolite is irreparable
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14E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR
Barcelona 12-15 May 2003
Example: norm and criteria optimisationSwitch of velocity
1,5 2,0 2,5 3,0 3,5 4,0 4,5
Velocity (m/s)
Ch
anc
e d
en
sit
y
Probability density curve of switching velocity
0,0
0,5
1,0
1,5
2,0
2,5
3,0
3,5
0,0 5,0 10,0 15,0 20,0 25,0
Contactpressure (kg)
Velo
cit
y (
m/s
)
Correlation between contact pressure and velocity
Norm definition for velocity based on large population measured data
Define a maximum norm for contactpressure based on influence on velocity
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15E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR
Barcelona 12-15 May 2003
The outcome of the data analyses resulted in a further
optimised maintenance program …..
The optimisation of both the mixture of maintenance and measurement
activities and frequency resulted in a total cost reduction of 35%
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16E.R.S. Groot, The Netherlands, Session 1, Block 1.1: SWITCHGEAR
Barcelona 12-15 May 2003
Conclusion
• Good experiences with CBM
• Still implemented it succesfully for other type of switchgear
• Growing importance for condition data (not only as a foundation for CBM)