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| Content Provider | IET Digital Library |
|---|---|
| Author | Liu, Chunming Ganebo, Yared S. Wang, Donghui |
| Abstract | The capacitance isolation device is a kind of effective suppression of DC bias in transformers caused by HVDC monopolar operation. However, according to the actual operation of the system, the capacitive isolation device at the neutral point of a transformer will probably cause more serious DC bias in other adjacent transformers while inhibiting its internal bias current at the same time. Since autotransformers are applied widely in the high-voltage network, in this paper, we considered the structural characteristics of it and introduced the concept of effective bias current to describe the influence of magnetic bias current on the transformer more accurately. Then, the authors choose the bias current at any substations in the target grid less than the limit value as the constraint condition. Aiming at the minimum number of installed capacitors, the genetic algorithm based on improved niche is used to solve the optimal configuration problem. Taking the Ethiopia power grid as a test case, the authors work out the optimal quantity and installed location of capacitance isolation devices which satisfy the constraint condition. Compared with the traditional method, the cost is greatly reduced. |
| Starting Page | 1571 |
| Ending Page | 1574 |
| 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.2018.8883 |
| 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 | Actual Operation Adjacent Transformers Capacitance Isolation Device Capacitive Isolation Device Capacitor Isolation Device D.C. Transmission Effective Bias Effective Suppression Genetic Algorithm HVDC Monopolar Operation HVDC Power Transmission Improved Niche GA Algorithm Internal Bias Magnetic Bias Current Optimal Configuration Method Optimal Configuration Problem Optimisation Technique Power Grid Power Transformer Serious DC Bias Substations Transformer And Reactors Transformer Substations |
| Content Type | Text |
| Resource Type | Article |
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