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Content Provider | IET Digital Library |
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Author | Li, Baowei Wen, Minghao Lv, Pengfei Zheng, Junchao Su, Yaxin |
Abstract | On the basis of the principle of breaker failure protection delay and the analysis of the main factors which affect the protection, a sub-station-area breaker failure and dead-zone protection technical scheme based on the current differential principle is proposed. In this scheme, an incomplete current differential protection is structured by the breakers current transformer (CT) of the non-fault area, which is adjacent to the fault area. When the criteria of the incomplete current differential protection are satisfied, the adjacent breakers will trip to realise the isolation of the fault. This scheme is not only affected by the CT tailing and CT saturation, but also greatly reduces the time delay of breaker failure protection and achieves the free protection setting. The implementation of the project adopts an expandable architecture designed with the master slave mode, which could be achieved by high reliability with a flexible configuration of engineering and not relying on external time signals. Moreover, this scheme has the advantages of versatility and easier to implement. Also, it is preferable due to practicability and extended significance to popularise. |
Starting Page | 1181 |
Ending Page | 1184 |
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.2018.8819 |
Journal | The Journal of Engineering |
Publisher | The Institution of Engineering and Technology |
Publisher Date | 2018-10-23 |
Access Restriction | Open |
Rights License | Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/) |
Subject Keyword | Adjacent Breaker Breaker Current Transformer Breaker Failure Protection Delay Circuit Breaker CT Saturation CT Tailing Current Differential Principle Current Transformers Dead-zone Protection Technical Scheme Delay Failure Analysis Fault Area Fault Diagnosis Fault Isolation Free Protection Setting Incomplete Current Differential Protection Master Slave Mode Nonfault Area Power System Protection Power Transformer Protection Relay Protection Reliability Substation Protection Substation-area Breaker Failure Protection Substations Switch Transformer And Reactors |
Content Type | Text |
Resource Type | Article |
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