Transmission
Refurbishment & Strategic Spares
Principles and Plan
September 2014
Transmission Assets and Infrastructure
2014/10/13
Substations
Outdoor plant
Lines
Protection & Control
2
Equipment Age Profile
Age is used for long term planning and plant health assessments are used for
short term planning
Transmission Grid: Age of Major Equipment
Number of units
120
100
80
60
40
20
0
0-5
5-10
10-15
15-20
20-25
25-30
30-35
35-40
40-45
45-50
50-55
Age in Years
Transformers
2014/10/13
Transmission Lines
Shunt Banks
Reactors
Series Banks
SVC
3
Refurbishment - General Principles
• Eskom Project Life Cycle Model (wires PLCM) is followed.
• Investment justifications are based on following criteria:
•
•
•
•
Statutory
Strategic
Least Economic Cost
Operating Cost Reduction
• Assets to be refurbished in accordance with asset life-cycle
management plans (LCMP’s).
• Condition, criticality & risk assessment (CCRA) principles are being
implemented for refurbishment investment decisions. (Likelihood of
asset loss vs. criticality of the asset to the network)
2014/10/13
4
Refurbishment Capital Expenditure Drivers
• Refurbishment
•
•
•
•
Targeted Asset Performance Improvements
Refurbishment of existing assets
Physical security improvements, surveillance and monitoring
Strategic and operational spares holding (to reduce SML<1 and major
incidents risk)
• Compliance (Regulatory, OHS Act, NKP Act, Environmental etc.)
• Asset Purchases
• Specialised equipment for: live-line work; fault location systems, and
online condition monitoring.
Refurbishment projects
73
106
100
30
127
28
16
127
39
2014/10/13
6
Thank you