1. Term Project: Challenges in supplying Energy to Central Region
By:
Mohammed Shaflout Ali
August 20, 2005
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2. OUTLINE Introduction Objective VE Job Plan - Information Phase
- Creative Phase
- Evaluation Phase
- Development Phase
- Presentation Phase
- Implementation Phase
- Audit Phase
Q & A
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3. INTRODUCTION
Demand on electricity in Central Region of Saudi Arabia has increased dramatically in the last 3 years ago ( Due to 9/11 Incident)???
SEC wants to determine the optimum power will be transmitted to Central Region at the most optimum cost.
The original proposal was to import 1800MW to Central From West via 1200KM High Voltage A/C Transmission Line.
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4. Existing Network
Planned Network
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5. OBJECTIVE
To study and compare the original proposal with other alternatives and choose the most suitable system using V.E. techniques.
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6. INFORMATION PHASE Provide save and reliable electricity
Satisfy customer needs
The material to be in-kingdom
Low operational and maintenance cost
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7. INFORMATION PHASE Cost Data Idea Cost HVAC $700M HVDC $550M
Building Gen. Plant $1200M
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8. Supply reliable & save Electricity
FUNCTION PHASE
Function Worksheet
Why
Function
How
To meet customers needs
Supply reliable & save Electricity
Install HVAC transmission lines
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9. FUNCTION PHASE Identify Present Function What does it do? Verb Noun
Supply Energy
What must it do?
Meet Increase in demand
Ensure Reliability
Enhance Stability
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10. CREATIVE PHASE Generate Ideas
Install 1200KM/380KV HVAC Transmission Line.
Build new Generation Plant.
Install 1200KM/500KV HVDC Transmission Line.
Co-generation agreements
Buy energy from private generation companies.
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11. CEM-512 Value Engineering
EVALUATION PHASE
Feasibility Ranking
Idea#
Prob. of
Implementation
Time to Implement
Cost to
Reliability
Experience
Total
Rank
Develop 1 10 8 6 40 2 3 4 24 9 5 38 29 22
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12. Idea Comparison Idea Advantage Disadvantage Rank
Install 1200KM/380KV HVAC Transmission Line
Reliability
Easy to construct
Simplicity in
equipments’ installation
-High cost for long distances
-Voltage problems
-Transient problems
-Dynamics problems 2
Install 1200KM/500KV
HVDC Transmission Line
Very small losses
Economic solution for
long distances
Asynchronous
-Complexity in construction of
Invertors and Converters
-Electronic based equipment 1
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13. CEM-512 Value Engineering
EVALUATION PHASE
Weights For Evaluation
A Initial Cost
B Operation
C Maintenance
D Reliability
E Constructability
Raw Score
Assigned Weight 8 10 4 5 2 3
How important B C D E 3
Major Preference A
A-3
A-2
A/D 2
Medium Preference 1
Minor Preference
B-2
B/D
B/E
C-2
E-2
D/E
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14. Evaluation Matrix CRITERIA Initial Cost Operation Maintenance
Reliability
Construc.
TOTAL
IDEA
Wt. 10 5 3 4
RANK
Install new HVAC Transmission Line 6 8 9 7 2
Sub Tot. 60 40 27 28 30
185
Install new HVDC Transmission Line 1
100 36 21
217
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15. DEVELOPMENT PHASE
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16. DEVELOPMENT PHASE Savings Proposal Initial Cost ($M) 1)- HVAC 700
2)- HVDC
Saving
% Reduction %
Life Cycle Cost:
In Modern HVDC systems; Normal Routine Maintenance can be done one week/2years. Moreover, HVDC systems require a few skilled staff to do the job. In terms of thermal rating; HVDC systems can live long time. In contrast, HVAC needs lots of maintenance work and staffs i.e. lines and insulators wash, insulation test and patrolling. losses, tripping and short circuits can harm the HVAC aging . So, the maintenance cost for HVDC is less and the Return On Investment is guaranteed.
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17. VALUE STUDY SUMMARY The HVDC has the following advantages:
Ensure very low environmental impact reduce construction time.
Economically transmits large amount of power over long distances.
Ensure minimum losses.
Maintenance requirements are low.
Flexibility of operation and control.
Return on Investment is very high.
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18. PRESENTATION PHASE
V.E. study to be presented to the executive management to show the recommended alternative.
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19. How should it be implemented?
IMPLEMENTATION PHASE
How should it be implemented?
The proposed method will be award to GES contractor to prepare the drawings and the estimate.
What should be changed and in what sequence?
HVDC components to be installed in the transmitter and receiver end while construction the line.
Who should do it?
Qualified contractor who did similar projects before.
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20. AUDIT PHASE
Management should assign team to assure the desired results have been attained, properly documented and reported.
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21. Thank you
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