TY - JOUR
T1 - Unified Power Flow Algorithm for Standalone AC/DC Hybrid Microgrids
AU - Aprilia, Ernauli
AU - Meng, Ke
AU - Al Hosani, Mohamed
AU - Zeineldin, Hatem H.
AU - Dong, Zhao Yang
N1 - Funding Information:
Manuscript received February 18, 2017; revised June 21, 2017; accepted August 31, 2017. Date of publication September 6, 2017; date of current version December 19, 2018. This work was supported in part by the Indonesian Endowment Fund for Education, in part by Tyree Foundation, and in part by ARC Discovery under Grant DP170103427. Paper no. TSG-00243-2017. (Corresponding author: Ke Meng.) E. Aprilia and K. Meng are with the School of Electrical and Information Engineering, University of Sydney, Sydney, NSW 2006, Australia (e-mail: [email protected]; [email protected]).
Publisher Copyright:
© 2010-2012 IEEE.
PY - 2019/1
Y1 - 2019/1
N2 - Recent studies on power flow analysis of islanded microgrids have become increasingly important and different solutions have been proposed. However, they are often limited to only ac or only dc microgrids and hence, the power flow must be solved separately. This paper proposes a straightforward and efficient method to solve power flows of hybrid ac/dc microgrids simultaneously, based on the well-established Newton-Raphson approach. It considers the lack of slack bus during islanded operation, the coupling of ac frequency and dc bus voltage, as well as the droop control of distributed generators. To achieve power sharing between the ac and dc subgrids, this method incorporates the interlinking converter droop constants in the equation. The algorithm was tested on modified hybrid microgrids involving multiple ac-dc subgrids. The results are compared against results from time-domain simulations to validate the algorithm's accuracy. The proposed technique can be easily implemented to aid the design and planning process of hybrid microgrids.
AB - Recent studies on power flow analysis of islanded microgrids have become increasingly important and different solutions have been proposed. However, they are often limited to only ac or only dc microgrids and hence, the power flow must be solved separately. This paper proposes a straightforward and efficient method to solve power flows of hybrid ac/dc microgrids simultaneously, based on the well-established Newton-Raphson approach. It considers the lack of slack bus during islanded operation, the coupling of ac frequency and dc bus voltage, as well as the droop control of distributed generators. To achieve power sharing between the ac and dc subgrids, this method incorporates the interlinking converter droop constants in the equation. The algorithm was tested on modified hybrid microgrids involving multiple ac-dc subgrids. The results are compared against results from time-domain simulations to validate the algorithm's accuracy. The proposed technique can be easily implemented to aid the design and planning process of hybrid microgrids.
KW - Distributed generation
KW - hybrid ac/dc microgrids
KW - islanded microgrid
KW - power flow analysis
UR - http://www.scopus.com/inward/record.url?scp=85029185364&partnerID=8YFLogxK
U2 - 10.1109/TSG.2017.2749435
DO - 10.1109/TSG.2017.2749435
M3 - Article
AN - SCOPUS:85029185364
SN - 1949-3053
VL - 10
SP - 639
EP - 649
JO - IEEE Transactions on Smart Grid
JF - IEEE Transactions on Smart Grid
IS - 1
M1 - 8026028
ER -