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Open AccessArticle

A Kriging Model Based Optimization of Active Distribution Networks Considering Loss Reduction and Voltage Profile Improvement

1
Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
2
State Grid Beijing Electric Power Company, Xicheng District, Beijing 100031, China
3
State Grid Energy Research Institute, Changping District, Beijing 102249, China
*
Author to whom correspondence should be addressed.
Energies 2017, 10(12), 2162; https://doi.org/10.3390/en10122162
Received: 21 October 2017 / Revised: 1 December 2017 / Accepted: 12 December 2017 / Published: 18 December 2017
(This article belongs to the Section Electrical Power and Energy System)
Optimal operation of the active distribution networks (ADN) is essential to keep its safety, reliability and economy. With the integration of multiple controllable resources, the distribution networks are facing more challenges in which the optimization strategy is the key. This paper establishes the optimal operation model of the ADN considering a diversity of controllable resources including energy storage devices, distributed generators, voltage regulators and switchable capacitor banks. The objective functions contain reducing the power losses and improving the voltage profiles. To solve the optimization problem, the Kriging model based Improved Surrogate Optimization-Mixed-Integer (ISO-MI) algorithm is proposed in this paper. The Kriging model is applied to approximate the complicated distribution networks, which speeds up the solving process. Finally, the accuracy of the Kriging model is validated and the efficiency among the proposed method, genetic algorithm (GA) and particle swarm optimization (PSO) is compared in an unbalanced IEEE-123 nodes test feeder. The results demonstrate that the proposed method has better performance than GA and PSO. View Full-Text
Keywords: optimal operation; active distribution network; power loss reduction; voltage profile improvement; Kriging model optimal operation; active distribution network; power loss reduction; voltage profile improvement; Kriging model
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Wang, D.; Hu, Q.; Tang, J.; Jia, H.; Li, Y.; Gao, S.; Fan, M. A Kriging Model Based Optimization of Active Distribution Networks Considering Loss Reduction and Voltage Profile Improvement. Energies 2017, 10, 2162.

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