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| Content Provider | IET Digital Library |
|---|---|
| Author | Li, Hui |
| Abstract | A novel variable DC reactor is proposed to cooperate with DC circuit breaker (DCCB) for breaking DC fault currents, which can satisfy the requirement of fast protection in high-voltage DC grids. Meanwhile, the variable reactor possesses other advantages such as smaller size, less loss and a small impact on the design of DCCBs. According to an electromagnetic characteristic of the reactor, a mathematical model of variable DC reactor is built on the base of experiment analysis. A three-terminal VSC-MTDC system with variable DC reactors is established in power systems computer-aided design/electromagnetic transient design and control. Simulation results are obtained as follows. First, the variable DC reactor possesses a low inductance during normal operations. When the received power increases, the DC reactors can reduce the adverse impact on the system stability to a great extent. Second, during a DC fault, the inductances of the variable DC reactors can increase automatically to limit the rising rate of short-circuit current and to extend the arriving time of the peak current. The application of variable DC reactors can provide the condition for DCCBs breaking fault currents successfully. |
| Starting Page | 1816 |
| Ending Page | 1819 |
| Page Count | 4 |
| Volume Number | 2019 |
| e-ISSN | 20513305 |
| Issue Number | Issue 16, Mar (2019) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/joe/conferences/cn-adc-2018 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/joe.2018.8686 |
| Journal | The Journal of Engineering |
| Publisher | The Institution of Engineering and Technology |
| Publisher Date | 2018-10-24 |
| Access Restriction | Open |
| Rights License | Creative Commons Attribution -Non Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) |
| Subject Keyword | Circuit Breaker D.C. Transmission DC Fault Currents DCCB Electromagnetic Characteristic Fault Current High-voltage DC Grid HVDC Power Converter HVDC Power Transmission Mathematical Model Novel Variable DC Reactor Peak Current Power Converter Power Grid Power Supplies to Apparatus Power System Computer-aided Design Short-circuit Current Switch Three-terminal VSC-MTDC System Variable DC Reactors Voltage-source Converter Voltage-source Converter Multiterminal High-voltage DC Transmission System |
| Content Type | Text |
| Resource Type | Article |
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