| Issue |
E3S Web Conf.
Volume 256, 2021
2021 International Conference on Power System and Energy Internet (PoSEI2021)
|
|
|---|---|---|
| Article Number | 01032 | |
| Number of page(s) | 6 | |
| Section | Smart Grid Technology and Power System Regulation Modeling | |
| DOI | https://doi.org/10.1051/e3sconf/202125601032 | |
| Published online | 10 May 2021 | |
Influence Analysis of Current Limiting Reactor on Pole-to-Pole Short Circuit Fault in DC Distribution System
1 Key Laboratory of Smart Grid of Ministry of Education, Tianjin University, Tianjin 300072, China
2 Key Laboratory of Power System Simulation and Control, Tianjin University, Tianjin 300072, China
3 State Grid Tianjin Electric Power Company, Hebei District, Tianjin, 300010, China
* Corresponding author’s e-mail: wzy_961224@tju.edu.cn
With the development of power electronic technology, flexible DC distribution system has gradually become a research hotspot. Pole-to-pole short circuit fault is the most serious fault type in DC distribution system. When pole-to-pole short circuit fault occurs in DC side, it will produce a large fault current, which will cause serious harm to DC distribution system. Therefore, it is urgent to install current limiting reactor to limit fault over-current. Aiming at the DC distribution system based on half bridge MMC, this paper analyses the fault mechanism and fault characteristics of pole-to-pole short circuit fault, studies the current limiting effect of the installation position and capacity of current limiting reactor on fault current, and carries out simulation verification in PSCAD / EMTDC platform. The analysis and simulation results show that installing a current limiting reactor at the outlet of the DC side can reduce the peak value of capacitor discharge current, and installing a current limiting reactor at the outlet of the AC side can reduce the overall amplitude of fault current.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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