This paper proposes a method to determine the optimal size of superconducting magnetic energy storage (SMES) to improve the stability of distribution power system with photovoltaic (PV) generation. The output power of PV system fluctuates according to changing weather conditions. Then, the system is subject to be unstable. In order to improve its stability, the SMES is applied. In general, the SMES is being considered as a strong candidate among energy storage devices in industry due to its high efficiency, fast response, and high energy density. To select the optimal size for SMES, several factors such as the output power fluctuation, the peak load shaving, the efficiency of converter for charging and discharging operation, and the voltage regulation for grid-connection, etc., are considered. Then, the performance of SMES with its optimal size is evaluated by the case study with the field measurement data of the irradiation and PV module temperature.
Bibliographical noteFunding Information:
Manuscript received September 06, 2011; accepted October 17, 2011. Date of publication November 03, 2011; date of current version May 24, 2012. This work was supported by the National Research Foundation of Korea (NRF) under a grant funded by the Korean Government (MEST) (2011-0028065). The authors are with the School of Electrical and Electronic Engineering, Yonsei University, Seoul 120-749, Korea (e-mail: email@example.com). Digital Object Identifier 10.1109/TASC.2011.2174571
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering