A unified power flow approach using VSC-efficiency for AC-DC distribution systems operating at grid connected and islanded modes

2021 ◽  
Vol 130 ◽  
pp. 106906
Author(s):  
Zeinab Sabzian Molaee ◽  
Esmaeel Rokrok ◽  
Meysam Doostizadeh
Keyword(s):  
Power Flow ◽  
Distribution Systems ◽  
Dc Distribution

scholarly journals Hybrid AC/DC Microgrid Planning with Optimal Placement of DC Feeders

Energies ◽  
2019 ◽  
Vol 12 (9) ◽  
pp. 1751 ◽  
Author(s):  
Xiong Wu ◽  
Zhao Wang ◽  
Tao Ding ◽  
Zhiyi Li
Keyword(s):  
Power Distribution ◽  
Power Flow ◽  
Distribution Systems ◽  
Optimal Number ◽  
Security Requirements ◽  
Optimal Placement ◽  
Planning Model ◽  
Dc Microgrid ◽  
Dc Distribution ◽  
Proposed Model

With the significant increase in DC loads (such as data and telecommunication centers) at the power distribution level, an additional set of power electronic converters are required to connect these DC loads to the AC-dominant power network. Notably, hybrid AC/DC microgrids (MGs) serve as promising solutions to satisfying both the AC and DC loads with a reduced number of installed converters. Since DC loads may be randomly distributed in the MG, how to place DC feeders to simultaneously fulfill the economic and security requirements of MG operations remains a challenging problem. To address this issue, this paper proposes a hybrid AC/DC MG planning model to determine the optimal placement of DC feeders with the objective of minimizing the total cost of the investment of distributed energy resources (DERs), converters, and AC/DC distribution lines, as well as the operation of DERs. In particular, the power flow of the hybrid AC/DC MG is derived in a unified manner and then incorporated in the planning model. Eventually, the proposed model suffices to find the optimal number and siting for both DERs and DC feeders while ensuring the continuality of the DC feeders. The proposed model is tested in two MG-based distribution systems, and its effectiveness is validated by the results of numerical experiments.

scholarly journals Power Flow Simulation in the Product Development Process of Modern Vehicular DC Distribution Systems

2020 ◽  
Vol 69 (5) ◽  
pp. 5025-5040 ◽  
Author(s):  
Paola Mantilla-Perez ◽  
Juan-Andres Perez-Rua ◽  
Manuel Alberto Diaz Millan ◽  
Xavier Dominguez ◽  
Pablo Arboleya
Keyword(s):  
Product Development ◽  
Power Flow ◽  
Distribution Systems ◽  
Development Process ◽  
Flow Simulation ◽  
Product Development Process ◽  
Dc Distribution

Power-flow sensitivities in DC distribution systems

2015 ◽  
Author(s):  
Victor Purba ◽  
Yu Christine Chen ◽  
Sairaj V. Dhople
Keyword(s):  
Power Flow ◽  
Distribution Systems ◽  
Dc Distribution

Full-current-based directional pilot protection for VSC-DC distribution systems

2019 ◽  
Vol 13 (16) ◽  
pp. 3713-3724 ◽  
Author(s):  
Meng Li ◽  
Ke Jia ◽  
Tianshu Bi ◽  
Congbo Wang ◽  
Rui Zhu ◽  
...  
Keyword(s):  
Distribution Systems ◽  
Dc Distribution ◽  
Pilot Protection
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