Engineering student problem solving processes and text-to-diagram translations
System analysis for problem structuring · Functions of basic system analysis 2. The system or...
Transcript of System analysis for problem structuring · Functions of basic system analysis 2. The system or...
Wil Thissen, Faculty of Technology, Policy and Management (TPM)
System analysis for problem structuring
Part 1B: the mono-actor perspective - example
1. Functions of basic system analysis2. The system or problem diagram3. How to construct a system diagram?4. Interpretation and uses of a system diagram5. Example: wind power6. conclusions
System analysis for problem structuringThe mono-actor situation
Example: Wind Power at Sea
Wind power at sea
security of supplysecurity of supply
percentage off-shorepower generation
percentage off-shorepower generation
costs of energyprovision
costs of energyprovision
installed capacity at sea
installed capacity at sea +
number of international connections
number of international connectionsstorage capacitystorage capacity
+ +
average windspeed at location
average windspeed at location
+number of new wind farms
number of new wind farms
size of the windparkssize of the windparks
++
subsidies
granting licenses
+
+
?
distance between the windfarm and the
connection point at land
distance between the windfarm and the
connection point at land
Transport costs of the generated energy
Transport costs of the generated energy
++
Distance tocoast
+
+
Balance supply and demand of energy
Balance supply and demand of energy ‐
+
Waterdepth off-shorewindfarm
Waterdepth off-shorewindfarm
+
scale advantagesscale advantages+
‐+
investment costinvestment cost
+ +
Uses of a system diagram
• Does the client face intrinsic dilemmas?– Actions or changes that are good for some goals but bad for other goals
• Are actions effective?– Can the client attain all of his goals?– How much control has the client over his criteria??
• Are criteria sensitive to external influences? Might the client’s goals beattained without taking action?
• Are there any important knowledge gaps?
Wind power at sea
+
security of supply
costs of energyprovision
costs of energyprovision
Balance supply and demand of energy
number of international connections
number of international connectionsstorage capacitystorage capacityaverage windspeed at
locationaverage windspeed at
location
number of new wind farms
size of the windparkssize of the windparks
installed capacity at sea
scale advantagesscale advantages
Transport costs of the generated energy
Transport costs of the generated energy
subsidies
granting licenses
-
Waterdepth off-shorewindfarm
Waterdepth off-shorewindfarm
distance between the windfarm and the
connection point at land
distance between the windfarm and the
connection point at land
scale advantagesscale advantages
investment costinvestment cost
Transport costs of the generated energy
Transport costs of the generated energy
Distance tocoast
+
++
+ +
+
+
+
++
+
+
+
?
+
+
‐
‐
+
+
percentage off-shorepower generation
Uses of a system diagram
• Does the client face intrinsic dilemmas?– Actions or changes that are good for some goals but bad for other goals
• Are actions effective?– Can the client attain all of his goals?– How much control has the client over his criteria??
• Are criteria sensitive to external influences? Might the client’s goals beattained without taking action?
• Are there any important knowledge gaps?
Wind power at sea
security of supplysecurity of supply
percentage off-shorepower generation
percentage off-shorepower generation
costs of energyprovision
costs of energyprovision
Balance supply and demand of energy
Balance supply and demand of energy
number of international connections
number of international connectionsstorage capacitystorage capacityaverage windspeed at
locationaverage windspeed at
location
number of new wind farms
number of new wind farms
size of the windparkssize of the windparks
installed capacity at sea
installed capacity at sea
subsidies
granting licenses
Waterdepth off-shorewindfarm
Waterdepth off-shorewindfarm
distance between the windfarm and the
connection point at land
distance between the windfarm and the
connection point at land
scale advantagesscale advantages
investment costinvestment cost
Transport costs of the generated energy
Transport costs of the generated energy
Distance tocoast
+
++
+ +
+
+
+
++
+
+
+
?
+
+
‐
‐
+
+
Score card
0 0
→Criteria Security
of supply
Percentage off-shore power
Costs of energy provision
- + ?
- + 0?
Giving subsidies
Granting licences
↓ Means
Distance to coast +
Uses of a system diagram
• Does the client face intrinsic dilemmas?– Actions or changes that are good for some goals but bad for other goals
• Are actions effective?– Can the client attain all of his goals?– How much control has the client over his criteria?
• Are criteria sensitive to external influences? Might the client’sgoals be attained without taking action?
• Are there any important knowledge gaps?
Wind power at sea
security of supplysecurity of supply
percentage off-shorepower generation
percentage off-shorepower generation
costs of energyprovision
costs of energyprovision
Balance supply and demand of energy
Balance supply and demand of energy
number of international connections
number of international connectionsstorage capacitystorage capacityaverage windspeed at
locationaverage windspeed at
location
number of new wind farms
number of new wind farms
size of the windparkssize of the windparks
installed capacity at sea
installed capacity at sea
subsidies
granting licenses
Waterdepth off-shorewindfarm
Waterdepth off-shorewindfarm
distance between the windfarm and the
connection point at land
distance between the windfarm and the
connection point at land
scale advantagesscale advantages
investment costinvestment cost
Transport costs of the generated energy
Transport costs of the generated energy
Distance tocoast
+
++
+ +
+
+
+
++
+
+
+
?
+
+
‐
‐
+
+
Uses of a system diagram
• Does the client face intrinsic dilemmas?– Actions or changes that are good for some goals but bad for other goals
• Are actions effective?– Can the client attain all of his goals?– How much control has the client over his criteria?
• Are criteria sensitive to external influences? Might the client’s goals beattained without taking action?
• Are there any important knowledge gaps?
Wind power at sea
security of supplysecurity of supply
percentage off-shorepower generation
percentage off-shorepower generation
costs of energyprovision
costs of energyprovision
Balance supply and demand of energy
Balance supply and demand of energy
number of international connections
number of international connectionsstorage capacitystorage capacityaverage windspeed at
locationaverage windspeed at
location
number of new wind farms
number of new wind farms
size of the windparkssize of the windparks
installed capacity at sea
installed capacity at sea
subsidies
granting licenses
Waterdepth off-shorewindfarm
Waterdepth off-shorewindfarm
distance between the windfarm and the
connection point at land
distance between the windfarm and the
connection point at land
scale advantagesscale advantages
investment costinvestment cost
Transport costs of the generated energy
Transport costs of the generated energy
Distance tocoast
+
++
+ +
+
+
+
++
+
+
+
?
+
+
‐
‐
+
+
Conclusions on wind power• The ministry faces an intrinsic dilemma: wind power versus reliability of
supply• Effectiveness of the client’s actions is not clear, and may depend on
exogenous factors• Attainment of the client’s goals will also depend on other actors (location
choice, energy companies, energy network managers)• More insight is needed:
– impacts of subsidies/permits on the willingness of energy companies toinvest
– Influence of location choice on costs– Possible influence of external factors– Influence on security of supply
1. Functions of basic system analysis2. The system or problem diagram3. How to construct a system diagram?4. Interpretation and uses of a system diagram5. Example: wind power6. conclusions
System analysis for problem structuringThe mono-actor situation
Thank you for your attention!