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- Title
Hybrid Technique for Thermal Unit Commitment.
- Authors
Ganesan, S.; Subramanian, S.
- Abstract
This paper presents a hybrid approach consisting of Modified Priority List and Sequential Approach (MPLSA) for solving thermal Unit Commitment (UC) problems. The solution methodology comprises two-stage processes of unit selection and economic dispatch of the committed units. The Modified Priority List (MPL) was used for unit selection, which was developed by sorting the units in descending order in respect of their Contribution Factor (CF). The CF is a ratio of the maximum generation capacity to the total installed capacity of system. Sequential Approach with Matrix Framework (SAMF) was applied to obtain the optimal dispatches of the committed units. The proposed methodology was validated by solving the standard ten-unit system, and the effectiveness of Prohibited Operating Zones (POZ) in UC problem was also studied. The initial state and minimum up and down time of units and spinning reserve requirement constraints were also considered. Numerical simulation results indicate an improvement in the solution quality. The solution methodologies are entirely based on generation limits that narrow the solution space which directs to the optimal unit selection and economic scheduling. The proposed method can be extended to solve security-constrained UC problems
- Subjects
UNIT commitment problem (Electric power systems); SURROGATE-based optimization; COMPUTER simulation; POWER system simulation; LOGIC programming
- Publication
IUP Journal of Electrical & Electronics Engineering, 2012, Vol 5, Issue 4, p63
- ISSN
2583-519X
- Publication type
Article