A Modified Differential Evolution Algorithm for the Solution of a Large-Scale Unit Commitment Problem

作者：Saleem Nisma^*; Ahmad Aftab; Zafar Salman

来源：Arabian Journal for Science and Engineering, 2014, 39(12): 8889-8900.

DOI：10.1007/s13369-014-1389-8

• Unit Commitment
• Spinning reserve
• Economic dispatch
• Differential evolution

The Unit Commitment (UC) problem is a nonlinear and complex optimization problem used to determine the start-up and shutdown scheduling of power-generating units to meet the forecasted load demand and spinning reserve over a specified time horizon so that the target of production cost minimization is achieved while satisfying various system and generator-based constraints. The increase in computational burden with the system size requires more efficient meta-heuristic approaches for solving the UC problem. This paper proposes a modified differential evolution (DE) approach for both discrete and real part of the UC problem. The infeasibility of the solutions is also handled by incorporating some repairing mechanisms in DE, which forcefully satisfy the system constraints and speed up the search process. The experimentation is carried out on various standard and large power systems, starting from the 10-unit base case and then going up to 100 units over a 24 -h time period. The obtained results indicate the effectiveness of the proposed approach as compared to the previous work reported in the literature.

• 出版日期2014-12