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Content Provider | IET Digital Library |
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Author | Chang, Bin Cwikowski, Oliver Barnes, Mike Shuttleworth, Roger Beddard, Antony Coventry, Paul |
Abstract | Multi-terminal voltage-sourced converters (VSC) high-voltage direct current (HVDC) transmission system is expected to play a vital role in future power systems. Compared with ac power transmission, dc transmission is more vulnerable to faults due to low dc-side impedances and sensitive power electronics in the converters. Dc protection issues must be tackled before any multi-terminal VSC-HVDC grid can be built. The multi-terminal VSC-HVDC system is studied in detail using switching models for two-level converters, detailed equivalent models for the modular multi-level converters, detailed hybrid circuit breaker switching models and frequency-dependent phase models for dc cables. Using such high-fidelity system models, a systematic study of HVDC fault protection methodologies in more detail than previous studies is conducted. This is the first comprehensive study that includes pre-emptive circuit breaker operation. The results presented in this study underline the benefits of such a detailed treatment of the breaker, and of considering it as part of a fast power electronics system rather than isolated dc equipment. The study identifies the best existing fault detection method and tests it extensively. In order to further improve post-fault system recovery response, which is a key but often neglected part of previous studies, a novel bump-less transfer control has been implemented in the converters. |
Starting Page | 211 |
Ending Page | 219 |
Page Count | 9 |
Volume Number | 2 |
e-ISSN | 23977264 |
Issue Number | Issue 4, Dec (2017) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/hve/2/4 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/hve.2017.0024 |
Journal | High Voltage |
Publisher | The Institution of Engineering and Technology CEPRI |
Publisher Date | 2017-08-29 |
Access Restriction | Open |
Rights License | Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
Subject Keyword | Bump-less Transfer Control Circuit Breaker D.C. Transmission Dc Cables Fault Detection Method Fault Diagnosis Frequency-dependent Phase Model High-voltage Direct Current Transmission System HVDC Fault Protection Methodologies HVDC Power Converter HVDC Power Transmission HVDC Transmission System Hybrid Circuit Breaker Switching Model Low Dc-side Impedance Modular Multilevel Converter Multiterminal Voltage-sourced Converter Post-fault System Recovery Response Power Electronics System Power System Protection Power Transmission Fault Power Transmission Protection Preemptive VSC-HVDC Dc Protection Performance Sensitive Power Electronics Switch Two-level Converter Voltage-source Converter |
Content Type | Text |
Resource Type | Article |
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