NEA-0417 KOSAK.

KOSAK, Power Plant Cost Optimization with Pu Availability Option

NAME OR DESIGNATION OF PROGRAM, COMPUTER, NATURE OF PHYSICAL PROBLEM SOLVED, METHOD OF SOLUTION, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, AUXILIARIES, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED, OTHER RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHOR, MATERIAL, CATEGORIES

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1. NAME OR DESIGNATION OF PROGRAM: KOSAK. Longterm planning of economic expansion and operation of an electricity generating system by minimization of the integral overall costs.

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2. COMPUTERS

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Program name	Package id	Status	Status date
KOSAK	NEA-0417/01	Tested	01-FEB-1977

Machines used:

Package ID	Orig. computer	Test computer
NEA-0417/01	CDC CYBER 174	CDC CYBER 174

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3. NATURE OF PHYSICAL PROBLEM SOLVED

For a given closed region, the economically optimal strategy of power plant additions is evaluated by minimizing the total integrated electricity generating costs of the generating system. Therefore, as a subproblem, minimization of the system operating costs is done for each new configuration.
Special consideration is given to the following constraints - minimum or maximum capacity or generated energy for individual power plant categories, limitation of growth rate of capacity of certain power plant categories, availability of not naturally occurring nuclear fuels (e.g. plutonium), availability of base load capacity for generating pumping energy for pumped storage plants.

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4. METHOD OF SOLUTION

The minimization of the non-linear objective function under linear and non-linear constraints is done using the sequential unconstrained minimization technique (SUMT) for non-linear programming, by Fiacco/McCormick.

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5. RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM

10 different types (or groups) of power stations.
5 load ranges per load diagram.
30 years planning period.

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6. TYPICAL RUNNING TIME

20 minutes on CDC 6400 (RUN-compiled).
6 minutes on IBM 360/65 (H-compiled).

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7. UNUSUAL FEATURES OF THE PROGRAM

Program looks up the overall cost minimum, and not a sequence of cost minima of the individual subperiods of which the total planning period is composed.
Load diagrams are represented in the form of monotonic decreasing polygonal curves.
Installation costs of hydro plants may be expressed as a function of the total installed hydro capacity.

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8. RELATED OR AUXILIARY PROGRAMS: RELATED AND AUXILIARY PROGRAMS

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9. STATUS

Package ID	Status date	Status
NEA-0417/01	01-FEB-1977	Tested at NEADB

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10. REFERENCES

'Studie ueber die langfristigen Auswirkungen der Kernenergie auf die Wahl der Produktionsmittel und deren entsprechenden Einsatz in der Elektrizitaetswirtschaft der Gemeinschaft'
Final Report under EURATOM Research Contract no. 040-67-7 ECIC.

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11. MACHINE REQUIREMENTS

32000 words (60 bits) of fast core storage as overlay job on CDC 6400. Disk, one tape (optional), one card punch (optional).

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12. PROGRAMMING LANGUAGE(S) USED

Package ID	Computer language
NEA-0417/01	FORTRAN-IV

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13. OPERATING SYSTEM OR MONITOR UNDER WHICH PROGRAM IS EXECUTED

SCOPE 2.0 on CDC 6400 (as an example). The operating system must be able to run overlay jobs.

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14. OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

ANY OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS

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15. NAME AND ESTABLISHMENT OF AUTHOR

   Dr.-Ing. Gerhard Meurin
   Lehrauftrag Leistungsreaktoren
   Rheinisch-Westfaelische Technische Hochschule
   D-5100 Aachen, Fed.Rep. of Germany.

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16. MATERIAL AVAILABLE

NEA-0417/01