Linearised Bipolar Power Flow for Droop-controlled DC Microgrids
(2021) 2021 International Conference on Engineering and Emerging Technologies (ICEET) — (2021)
Files
Linear_Bipolar_Load_flow.pdf
Postprint
Open Access - Adobe PDF
- 1.96 MB
Details
- Authors
Vasquez Mayen, Eduardo Rene 
- Abstract
- The increase in efficiency and easiness to connect renewable energy sources has brought an increased interest into DC microgrids. Bipolar DC microgrids, present advantages over unipolar DC microgrids. Yet, due to their configuration they are prone to suffer from asymmetric loading which results in voltage unbalances among poles. The traditional power flow methods used in AC microgrids do not accurately reflect the steady state of DC microgrids. Equally, The power flow methods used for unipolar DC microgrids are not applicable for bipolar DC microgrids due to the behaviour of the neutral pole. In this paper, a linearised power flow method is proposed for bipolar microgrids. The proposed method allows to calculate the power flow for the positive and negative poles and to obtain the neutral pole voltage and currents resulting from load unbalances. The proposed power flow is suitable for simulating islanded or grid-connected microgrids with droop controlled generators and non-dispatchable generators such as photovoltaic pannels. The simulation results obtained using Python prove the effective performance of the proposed approach.
- Affiliations
Citations
Vasquez Mayen, E. R., & De Jaeger, E. (2021). Linearised Bipolar Power Flow for Droop-controlled DC Microgrids. 2021 International Conference on Engineering and Emerging Technologies (ICEET). Published. https://doi.org/10.1109/iceet53442.2021.9659746 (Original work published 2021)