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| Content Provider | IET Digital Library |
|---|---|
| Author | Li, Chengzhu Lin, Lei He, Zhen Xu, Chen |
| Abstract | Compared with the radial modular multilevel converter multi-terminal direct current (MMC-MTDC) system, the meshed system is with higher power supply reliability and flexibility. However, its vulnerability against DC fault is a significant issue. When a DC fault occurs, the DC-side smoothing reactor will limit rising rate of the fast-developing fault current, and then DC current breakers can isolate the fault. This paper proposes a method to optimise the design of smoothing reactors in meshed MTDC system. Firstly, fault characteristics of fault currents and the whole system based on different smoothing reactors are proposed through theoretical analysis. Then, the simplified calculation steps of fault currents at each point in the meshed system are introduced. Thus, the range of the optimal smoothing reactor can be deduced through comparing the rising rates of each current based on the expected post-fault system states. Finally, the simulation model based on PSCAD/EMTDC is carried out to prove the correctness of the proposed method, and visually shows the distinct operating states of the system with different smoothing reactor at fault time. |
| Starting Page | 1225 |
| Ending Page | 1231 |
| Page Count | 7 |
| Volume Number | 2017 |
| e-ISSN | 20513305 |
| Issue Number | Issue 13, Jan (2017) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/2017/13 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2017.0524 |
| Journal | The Journal of Engineering |
| Publisher | The Institution of Engineering and Technology |
| Publisher Date | 2017-01-01 |
| Access Restriction | Open |
| Rights License | Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
| Subject Keyword | DC Current Breaker DC Fault Vulnerability DC-side Smoothing Reactor Fault Current Fault Current Calculation Fault Isolation HVDC Power Converter Meshed MTDC System Meshed Multiterminal HVDC System MMC-MTDC System Optimisation Optimised Design Post-fault System Power Supply Reliability PSCAD-EMTDC Simulation Model Radial Modular Multilevel Converter Multiterminal Direct Current System Reactors (Electric) Reliability Symmetrical Bipolar Modular Multilevel Converter Transformer And Reactors |
| Content Type | Text |
| Resource Type | Article |
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