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| Content Provider | IET Digital Library |
|---|---|
| Author | Gao, Shu ping Liu, Qi Song, Guo bing |
| Abstract | Traditional high-voltage DC (HVDC) current differential protection has problems on identifying fault current and has long delay. In this study, a novel current differential protection principle for HVDC transmission lines is proposed. By the adoption of distributed parameter model, differential current criterion is formed at a selected point on the transmission line. When fault occurs on DC line, setting point differential current reaches a high value. When no fault occurs or fault occurs outside the DC line, setting point differential current reaches a small value. Comparing with the traditional current differential protection, the proposed principle eliminates the impact of distributed capacitive current and has no requirement of delay. Comparing with travelling wave protection, fault identification can be performed during both transient and steady states, and the proposed method has reasonable sampling frequency requirements and has high reliability. Simulation analysis shows that the proposed principle identifies faults reliably and rapidly. The proposed principle is theoretically novel and practically applicable. |
| Starting Page | 1286 |
| Ending Page | 1292 |
| Page Count | 7 |
| ISSN | 17518687 |
| Volume Number | 11 |
| e-ISSN | 17518695 |
| Issue Number | Issue 5, Mar (2017) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-gtd/11/5 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2016.1380 |
| Journal | IET Generation, Transmission & Distribution |
| Publisher Date | 2016-12-23 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Current Differential Protection D.C. Transmission Distributed Capacitive Current Distributed Parameter Model Fault Identification HVDC Power Transmission HVDC Transmission Line HVDC Transmission System Power System Protection Power Transmission Cables Power Transmission Line Power Transmission Protection Travelling Wave Protection |
| Content Type | Text |
| Resource Type | Article |
| Subject | Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering |
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