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Abstract
A DC current flow controller can provide branch current control in a meshed multi-terminal high-voltage direct current (HVDC) grid. However, the introduction of a DC current flow controller may affect the stability of the multi-terminal HVDC. Hence, the dynamic characteristics of the multi-terminal HVDC with the DC current flow controller should be investigated. This article focuses on small-signal stability analysis of a current flow controller-equipped meshed three-terminal HVDC system. A small-signal model for the multi-terminal HVDC with the DC current flow controller is established. Based on the stability analysis of the small-signal model, a control system is designed for the DC current flow controller, fulfilling the system stability requirement. Finally, non-linear dynamic simulations on the real-time digital simulator are conducted, and simulation results are compared with a theoretical model to validate the proposed controller for the DC current flow controller. In addition, dynamic impacts of the DC current flow controller on the meshed multi-terminal HVDC grid are discussed.
Original language | English |
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Pages (from-to) | 1126-1137 |
Journal | Electric Power Components and Systems |
Volume | 44 |
Issue number | 10 |
Early online date | 21 May 2016 |
DOIs | |
Publication status | Published - 2016 |
Keywords
- current flow controller
- controller design
- meshed multi-terminal high-voltage direct current
- small-signal dynamic modeling
- stability analysis
- real-time digital simulator
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Dive into the research topics of 'Small-signal stability analysis and control system design of a meshed multi-terminal high-voltage direct current grid with a current flow controller'. Together they form a unique fingerprint.Projects
- 1 Finished
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SCEPTICS: A SystematiC Evaluation Process for Threats to Industrial Control Systems
Roberts, C., Chothia, T., Ryan, M. & Zhang, X.
Engineering & Physical Science Research Council
1/10/14 → 31/12/17
Project: Research Councils