NDLI: A Hopfield model to economic dispatch of power systems having special units

Content Provider	IEEE Xplore Digital Library
Author	Ching-Tzong Su Gwo-Jen Chiou Chu-Sheng Lee
Copyright Year	2000
Description	Author affiliation: Inst. of Electr. Eng., Nat. Chung Cheng Univ., Chiayi, Taiwan (Ching-Tzong Su)
Abstract	This paper presents a Hopfield model with three strategies to solve the economic dispatch (ED) problems having prohibited operating zones. The prohibited operating zones of a unit result in the ED problem becoming a nonconvex optimization problem; consequently there are many local minima embedded in the problem. By employing the proposed Hopfield model, one can find out the global or near global minimum for the nonconvex problem mentioned above. An energy function is defined in the proposed model. The model solution moves in the direction of decreasing energy and finally reaches an optimal point with minimum energy. Application of the proposed approach is demonstrated using a 15-unit system with 4 units having prohibited zones. In the solving process, the dispatching generation level of each unit gradually changes according to its incremental cost and runs toward the optimal value obeying the equal-incremental-cost criterion. From the results of the sample-system study, the proposed method shows its ability of solving economic dispatch considering units having prohibited operating zones.
Starting Page	562
Ending Page	566
File Size	521142
Page Count	5
File Format	PDF
ISBN	0780358120
DOI	10.1109/ICIT.2000.854226
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-01-19
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Power system modeling Power system economics Power generation economics Cost function Power generation Fuel economy Lagrangian functions Convergence IEEE members Paper technology
Content Type	Text
Resource Type	Article

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