TY - JOUR
T1 - Reduction of Three-Phase Voltage Unbalance Subject to Special Winding Connections of Two Single-Phase Distribution Transformers of a Microgrid System Using a Designed D-STATCOM Controller
AU - Wang, Li
AU - Liu, Wei Sheng
AU - Yeh, Chuan Chieh
AU - Yu, Chien Hsiang
AU - Lu, Xiu Yu
AU - Kuan, Bing Lin
AU - Wu, Hong Yi
AU - Prokhorov, Anton Victorovich
N1 - Funding Information:
Manuscript received July 27, 2017; revised October 31, 2017; accepted December 18, 2017. Date of publication December 24, 2017; date of current version May 18, 2018. Paper 2017-PSEC-0811.R1, presented at the 2017 IEEE Industry Applications Society Annual Meeting, Cincinnati, OH, USA, Oct. 1–5, and approved for publication in the IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS by the Power System Engineering Committee of the IEEE Industry Applications Society. This work was supported in part by Ministry of Science and Technology (MOST), Executive Yuan, Taiwan, under Grant MOST 104-3111-Y-042A-055. (Corresponding author: Li Wang.) L. Wang, W.-S. Liu, C.-C. Yeh, C.-H. Yu, X.-Y. Lu, B.-L. Kuan, and H.-Y. Wu are with the Department of Electrical Engineering, National Cheng Kung University, Tainan 70101, Taiwan (e-mail: liwang@mail.ncku.edu. tw; fxp87357@gmail.com; happy369147@gmail.com; cchithb@hotmail.com; mas98762110@yahoo.com.tw; asakuan55@gmail.com; bingxun0628@gmail. com).
Publisher Copyright:
© 1972-2012 IEEE.
PY - 2018/5/1
Y1 - 2018/5/1
N2 - The U-V or V-V winding connections of two single-phase distribution transformers are widely utilized in distribution systems to deliver power to various three-phase and/or single-phase loads. Such special winding connections of distribution transformers can cause three-phase voltage unbalance in distributions systems, which could also lead to unexpected trip of ground relay, extra power losses on distribution-system lines, reduced operating efficiency of induction-motor loads, etc. This paper proposes a distribution static synchronous compensator (D-STATCOM) to effectively improve the voltage unbalance of a distribution system connected with a microgrid system. The studied microgrid system contains various renewable-energy resources, a diesel-engine generator, and three distribution transformers with U-V and/or V-V winding connections. The simulation results show that the proposed D-STATCOM with the designed controller can effectively reduce voltage unbalance of the distribution system connected with the studied microgrid system when the distribution transformers have U-V and/or V-V winding connections.
AB - The U-V or V-V winding connections of two single-phase distribution transformers are widely utilized in distribution systems to deliver power to various three-phase and/or single-phase loads. Such special winding connections of distribution transformers can cause three-phase voltage unbalance in distributions systems, which could also lead to unexpected trip of ground relay, extra power losses on distribution-system lines, reduced operating efficiency of induction-motor loads, etc. This paper proposes a distribution static synchronous compensator (D-STATCOM) to effectively improve the voltage unbalance of a distribution system connected with a microgrid system. The studied microgrid system contains various renewable-energy resources, a diesel-engine generator, and three distribution transformers with U-V and/or V-V winding connections. The simulation results show that the proposed D-STATCOM with the designed controller can effectively reduce voltage unbalance of the distribution system connected with the studied microgrid system when the distribution transformers have U-V and/or V-V winding connections.
UR - http://www.scopus.com/inward/record.url?scp=85039800473&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85039800473&partnerID=8YFLogxK
U2 - 10.1109/TIA.2017.2786707
DO - 10.1109/TIA.2017.2786707
M3 - Article
AN - SCOPUS:85039800473
VL - 54
SP - 2002
EP - 2011
JO - IEEE Transactions on Applications and Industry
JF - IEEE Transactions on Applications and Industry
SN - 0093-9994
IS - 3
ER -