• The Transactions of The Korean Institute of Electrical Engineers
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• v.56 no.2
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• pp.260-267
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• 2007

Systematic studies on the dispatch scheduling algorithm can enhance the efficiency of electricity market operation. In addition, as the dispatching policies in competitive electricity markets directly affect the market participants' profits, the dispatch scheduling procedure should be reasonable, systematic, and transparent. In this paper, we propose an unconstrained/constrained pre-dispatch scheduling algorithm and develop corresponding programs applicable to wholesale electricity markets.

• The Transactions of the Korean Institute of Electrical Engineers A
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• v.54 no.3
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• pp.152-157
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• 2005

An objected-oriented programming(OOP) technique is introduced to dispatch schedules for TWBP. Some dispatch schedules such as constrained (pre)dispatch, unconstrained (pre)dispatch, and nominal self-dispatch schedule need to be peformed to make power market work. These dispatch schedules are similar but have some differences in required constraints, needed data, and scheduling time. Therefore, it makes the scheduling program simple to introduce the OOP technique to this problem: to have each instance of the OOP perform its own dispatch scheduling. The developed program adopts linear programming(LP) as an optimization tool and could consider some crucial constraints such as power balance, generation power limits, generation ramp-rates, power limitations of transmission lines, and power system security.

• Proceedings of the KIEE Conference
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• 2006.11a
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• pp.167-169
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• 2006

Systematic studies on the dispatch scheduling algorithm and related constraints can enhance the effectiveness of electricity market operation. Moreover the introduction of competition in electricity market emphasizes various decision-marking matters connected to dispatch scheduling procedure. Because these affect the market participants' profit, the dispatch scheduling procedure should be reasonable. In this paper, we propose a constrained Pre-dispatch algorithm with considered security using sensitivity indices.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.806-807
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• 2007

Systematic studies on the dispatch scheduling algorithm and related constraints can enhance the effectiveness of electricity market operation. When System Operator (SO) establishes a dispatch schedule, the bid information should be preserved in the schedule as much as possible. In this paper, we introduce a new type of sensitivity factor called Line Outage Impact Factor (LOIF) to screen a transmission line causing the most severe outage when scheduling the dispatch. This screening can assure the stable system operation and make an efficient feedback between the SO and market participants. We propose a transmission line contingency constrained Pre-dispatch algorithm using sensitivity indices in a suitable Pre-dispatch scheduling. The proposed algorithm has been tested on sample system and the results show more secure operation against critical contingencies.

• Proceedings of the KIEE Conference
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• 2006.07a
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• pp.388-389
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• 2006

Systematic studies on the dispatch scheduling algorithm and related constraints can enhance the effectiveness of electricity market operation. Moreover, since various decision-making matters connected to dispatch schedule in competitive electricity market directly affect the market participants' profit, the dispatch scheduling procedure should be reasonable and systematic to convince them. Therefore, to prevent a dispute among the participants, these studies are indispensible requisites for the effective electricity market operation. In this paper, we develop unconstrained/constrained dispatch schedule algorithm applicable to Korean wholesale electricity market.