Iranian Journal of Electrical and Electronic Engineering, Volume (11), No (2), Year (2015-6) , Pages (137-144)

Title : ( DC Voltage Control and Power-Sharing of Multi-Terminal DC Grids Based on Optimal DC Power Flow and Flexible Voltage Droop Strategy )

Authors: , Habib Rajabi Mashhadi ,

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This paper develops an effective control framework for DC voltage control and power-sharing of multi-terminal DC (MTDC) grids based on an optimal power flow (OPF) procedure and the voltagedroop control. In the proposed approach, an OPF algorithm is executed at the secondary level to find optimal reference of DC voltages and active powers of all voltage-regulating converters. Then, the voltage droop characteristics of voltage-regulating converters, at the primary level, are tuned based on the OPF results such that the operating point of the MTDC grid lies on the voltage droop characteristics. Consequently, the optimally-tuned voltage droop controller leads to the optimal operation of the MTDC grid. In case of variation in load or generation of the grid, a new stable operating point is achieved based on the voltage droop characteristics. By execution of a new OPF, the voltage droop characteristics are retuned for optimal operation of the MTDC grid after the occurrence of the load or generation variations. The results of simulation on a grid inspired by CIGRE B4 DC grid test system demonstrate efficient grid performance under the proposed control strategy.

Keywords

, CIGRE B4 DC grid test system, multi-terminal DC grids, optimal power flow, voltage droop control, hierarchical
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@article{paperid:1047052,
author = {, and Rajabi Mashhadi, Habib},
title = {DC Voltage Control and Power-Sharing of Multi-Terminal DC Grids Based on Optimal DC Power Flow and Flexible Voltage Droop Strategy},
journal = {Iranian Journal of Electrical and Electronic Engineering},
year = {2015},
volume = {11},
number = {2},
month = {June},
issn = {1735-2827},
pages = {137--144},
numpages = {7},
keywords = {CIGRE B4 DC grid test system; multi-terminal DC grids; optimal power flow; voltage droop control; hierarchical control},
}

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%0 Journal Article
%T DC Voltage Control and Power-Sharing of Multi-Terminal DC Grids Based on Optimal DC Power Flow and Flexible Voltage Droop Strategy
%A ,
%A Rajabi Mashhadi, Habib
%J Iranian Journal of Electrical and Electronic Engineering
%@ 1735-2827
%D 2015

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