Performance Analysis of Ubiquitous Power Systems under Coordinated Control of System Elements

• Published in: Journal of International Council of Electrical Engineering Vol. 1; no. 1; pp. 67 - 73
• Main Authors: Liyanage, Kithsiri M, Masuta, Taisuke, Shimizu, Koichiro, Kihara, Hiroyuki, Yokoyama, Akihiko, Ota, Yutaka, Nakajima, Tatsuhito, Taniguchi, Haruhito
• Format: Journal Article
• Language: Korean
• Published: 2011
• Subjects: Renewable sources; Micro grid; Electric vehicles; Power systems; Load balancing; Smart grid
• ISSN: 2233-5951; 2234-8972

The trend of integrating renewable energy sources into power networks is becoming common in practice, making power systems to be more ubiquitous in nature. The connection of renewable sources in large numbers at distribution level could cause adverse power fluctuations. By employing battery energy storage systems, these fluctuations can be reduced. However economic constraints imposed by high battery cost may not justify liberal use of battery storage to control power fluctuations. The authors have previously shown the possibility of reducing battery energy storage systems' capacity without degrading the performance in terms of energy capturing efficiency and arresting power fluctuations of a ubiquitous power network through coordinated control of elements. Meantime there are attempts to make use the battery energy storage available in electric vehicles to provide a cushion against power and frequency fluctuations caused by renewable generation. In this paper authors presents a comparison between the effectiveness of conventional battery energy storage system and that of battery energy storage available in electric vehicles to improve the performance of ubiquitous power network under coordinated control. This study has shown that energy storage from electric vehicles can outperform conventional battery energy storage systems of similar capacity range under certain conditions.