DC Voltage Control and Power-Sharing of Multi-Terminal DC Grids Based on Optimal DC Power Flow and Flexible Voltage Droop Strategy
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 voltage-droop control. In the proposed approach, an OPF algorithm is executed at the secondary level to find optimal re...
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| Format: | Article |
| Language: | English |
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Iran University of Science and Technology
2015-06-01
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| Series: | Iranian Journal of Electrical and Electronic Engineering |
| Subjects: | |
| Online Access: | http://ijeee.iust.ac.ir/browse.php?a_code=A-10-804-6&slc_lang=en&sid=1 |
| _version_ | 1818521732877647872 |
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| author | F. Azma H. Rajabi-Mashhadi |
| author_facet | F. Azma H. Rajabi-Mashhadi |
| author_sort | F. Azma |
| collection | DOAJ |
| description | 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 voltage-droop 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 re-tuned 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. |
| first_indexed | 2024-12-11T01:55:19Z |
| format | Article |
| id | doaj.art-066d4ebfb6674e3cb486cb1d4ef7157d |
| institution | Directory Open Access Journal |
| issn | 1735-2827 2383-3890 |
| language | English |
| last_indexed | 2024-12-11T01:55:19Z |
| publishDate | 2015-06-01 |
| publisher | Iran University of Science and Technology |
| record_format | Article |
| series | Iranian Journal of Electrical and Electronic Engineering |
| spelling | doaj.art-066d4ebfb6674e3cb486cb1d4ef7157d2022-12-22T01:24:38ZengIran University of Science and TechnologyIranian Journal of Electrical and Electronic Engineering1735-28272383-38902015-06-01112137144DC Voltage Control and Power-Sharing of Multi-Terminal DC Grids Based on Optimal DC Power Flow and Flexible Voltage Droop StrategyF. Azma0H. Rajabi-Mashhadi1 Ferdowsi University of Mashhad Ferdowsi University of Mashhad 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 voltage-droop 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 re-tuned 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.http://ijeee.iust.ac.ir/browse.php?a_code=A-10-804-6&slc_lang=en&sid=1: CIGRE B4 DC grid test system multi-terminal DC grids optimal power flow voltage droop control hierarchical control |
| spellingShingle | F. Azma H. Rajabi-Mashhadi DC Voltage Control and Power-Sharing of Multi-Terminal DC Grids Based on Optimal DC Power Flow and Flexible Voltage Droop Strategy Iranian Journal of Electrical and Electronic Engineering : CIGRE B4 DC grid test system multi-terminal DC grids optimal power flow voltage droop control hierarchical control |
| title | DC Voltage Control and Power-Sharing of Multi-Terminal DC Grids Based on Optimal DC Power Flow and Flexible Voltage Droop Strategy |
| title_full | DC Voltage Control and Power-Sharing of Multi-Terminal DC Grids Based on Optimal DC Power Flow and Flexible Voltage Droop Strategy |
| title_fullStr | DC Voltage Control and Power-Sharing of Multi-Terminal DC Grids Based on Optimal DC Power Flow and Flexible Voltage Droop Strategy |
| title_full_unstemmed | DC Voltage Control and Power-Sharing of Multi-Terminal DC Grids Based on Optimal DC Power Flow and Flexible Voltage Droop Strategy |
| title_short | DC Voltage Control and Power-Sharing of Multi-Terminal DC Grids Based on Optimal DC Power Flow and Flexible Voltage Droop Strategy |
| title_sort | dc voltage control and power sharing of multi terminal dc grids based on optimal dc power flow and flexible voltage droop strategy |
| topic | : CIGRE B4 DC grid test system multi-terminal DC grids optimal power flow voltage droop control hierarchical control |
| url | http://ijeee.iust.ac.ir/browse.php?a_code=A-10-804-6&slc_lang=en&sid=1 |
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