### Abstract

This paper presents a constraint logic programming (CLP) algorithm to solve the thermal unit commitment (UC) problem. The CLP algorithm provides efficient and flexible solution method for the UC problem. Constraints satisfaction techniques are used to prune the search space a priori. The solutions that can not appear as a feasible one are removed from further evaluation. These techniques propagate the constraints as much as possible, and assume the values of some variables of the unit on/off schedule until the infeasible solution are excluded. After pruning the infeasible solutions, branch and bound approach is then employed to find the minimum operation cost from the feasible domains. The algorithm has been implemented to solve the practical Taiwan power 38-unit thermal system UC problem. Results are compared to those of the Lagrangian Relaxation (LR) method to demonstrate the feasibility and effectiveness of the proposed approach to solving the thermal UC problem.

Original language | English |
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Pages | 255-260 |

Number of pages | 6 |

Publication status | Published - 1995 Dec 1 |

Event | Proceedings of the 1995 International Conference on Energy Management and Power Delivery, EMPD'95. Part 1 (of 2) - Singapore, Singapore Duration: 1995 Nov 21 → 1995 Nov 23 |

### Other

Other | Proceedings of the 1995 International Conference on Energy Management and Power Delivery, EMPD'95. Part 1 (of 2) |
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City | Singapore, Singapore |

Period | 95-11-21 → 95-11-23 |

### Fingerprint

### All Science Journal Classification (ASJC) codes

- Energy(all)
- Engineering(all)

### Cite this

*Constraint logic programming algorithm for solving thermal unit commitment problem*. 255-260. Paper presented at Proceedings of the 1995 International Conference on Energy Management and Power Delivery, EMPD'95. Part 1 (of 2), Singapore, Singapore, .

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**Constraint logic programming algorithm for solving thermal unit commitment problem.** / Yang, Hong Tzer; Huang, Kun Yuan; Huang, Ching Lien.

Research output: Contribution to conference › Paper

TY - CONF

T1 - Constraint logic programming algorithm for solving thermal unit commitment problem

AU - Yang, Hong Tzer

AU - Huang, Kun Yuan

AU - Huang, Ching Lien

PY - 1995/12/1

Y1 - 1995/12/1

N2 - This paper presents a constraint logic programming (CLP) algorithm to solve the thermal unit commitment (UC) problem. The CLP algorithm provides efficient and flexible solution method for the UC problem. Constraints satisfaction techniques are used to prune the search space a priori. The solutions that can not appear as a feasible one are removed from further evaluation. These techniques propagate the constraints as much as possible, and assume the values of some variables of the unit on/off schedule until the infeasible solution are excluded. After pruning the infeasible solutions, branch and bound approach is then employed to find the minimum operation cost from the feasible domains. The algorithm has been implemented to solve the practical Taiwan power 38-unit thermal system UC problem. Results are compared to those of the Lagrangian Relaxation (LR) method to demonstrate the feasibility and effectiveness of the proposed approach to solving the thermal UC problem.

AB - This paper presents a constraint logic programming (CLP) algorithm to solve the thermal unit commitment (UC) problem. The CLP algorithm provides efficient and flexible solution method for the UC problem. Constraints satisfaction techniques are used to prune the search space a priori. The solutions that can not appear as a feasible one are removed from further evaluation. These techniques propagate the constraints as much as possible, and assume the values of some variables of the unit on/off schedule until the infeasible solution are excluded. After pruning the infeasible solutions, branch and bound approach is then employed to find the minimum operation cost from the feasible domains. The algorithm has been implemented to solve the practical Taiwan power 38-unit thermal system UC problem. Results are compared to those of the Lagrangian Relaxation (LR) method to demonstrate the feasibility and effectiveness of the proposed approach to solving the thermal UC problem.

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M3 - Paper

AN - SCOPUS:0029493529

SP - 255

EP - 260

ER -