A new optimal power flow approach for wind energy integrated power systems

• Published in: Energy (Oxford) Vol. 134; pp. 349 - 359
• Main Authors: Rahmani, Shima, Amjady, Nima
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.09.2017; Elsevier BV
• Subjects: Clustering; Clusters; Optimal power flow (OPF); Power flow; Probability density function (PDF); Probability density functions; Scenario; Segmentation; Studies; Uncertainty; Wind power; Wind power (WP); Optimal power flow (OPF); Probability density function (PDF); Wind power (WP); Scenario
• ISSN: 0360-5442; 1873-6785
• DOI: 10.1016/j.energy.2017.06.046

Penetration of wind generation into power systems in recent years has greatly affected optimal power flow (OPF) because of the uncertain behavior of this new energy resource. In this research work, at first, a novel scenario generation approach is proposed to model wind power (WP) uncertainty. The proposed scenario generation approach includes construction of probability density function (PDF) pertaining to WP forecast error, segmentation of the PDF by an efficient clustering approach to obtain both the optimal number and the optimal arrangement of the clusters, and the generation of WP scenarios using the optimized clusters through roulette wheel mechanism. Secondly, this paper presents a new OPF framework based on DC network modeling for wind generation integrated power systems. Thirdly, a new out-of-sample analysis is presented to evaluate the long-run performance of the proposed OPF approach encountering various realizations of uncertain WPs. Finally, the performance of the proposed method for solving WP-integrated OPF problem is extensively illustrated on the IEEE 30-bus and the IEEE 118-bus test systems and compared with the performance of the deterministic method and the Weibull PDF method. These comparisons illustrate better performance of the proposed method, while it has reasonable computation times. •A new scenario generation approach is presented.•A new wind power integrated optimal power model is proposed.•A new out-of-sample analysis is presented.•The effectiveness of the proposed model is extensively illustrated.