LAPSE:2023.22521
Published Article
LAPSE:2023.22521
Simulation Test of a DC Fault Current Limiter for Fault Ride-Through Problem of Low-Voltage DC Distribution
Bing Han, Yonggang Li
March 24, 2023
The low voltage direct current (LVDC) distribution networks are connected with too many kinds of loads and sources, which makes them prone to failure. Due to the small damping value in the DC lines, the fault signal propagates so fast that the impact current with the wave front of millisecond and the transient voltage pose great challenges for fault detection. Even worse, some faults with small currents are difficult to detect and the communication is out of sync, resulting in protection misoperation. These problems have severely affected the new energy utilization. In view of this, a DC fault current limiter (FCL) composed of inductance, resistance, and power electronic switch was designed in this paper. The rising speed of fault current can be decreased by the series inductance and the peak value of the fault current can be limited by series impedance, thus in this way the running time can be gained for fault detection and protection. For distributed energy access, by deducing the short circuit fault characteristic expression of LVDC distribution network, the feasibility of FCL was verified. Based on the structure of the bridge-type alternating current (AC) current limiter, the structure and parameters of the DC FCL were determined according to the fault ride-through target. Then, a low voltage ride-through strategy based on DC FCL was proposed for the bipolar short-circuit fault of LVDC distribution network. Finally, MATLAB/Simulink simulation was used to verify the rationality of the proposed FCL and its ride-through strategy.
Keywords
DC fault current limiter, Fault Detection, fault ride-through strategy, LVDC distribution network, short-current characteristics of faults
Suggested Citation
Han B, Li Y. Simulation Test of a DC Fault Current Limiter for Fault Ride-Through Problem of Low-Voltage DC Distribution. (2023). LAPSE:2023.22521
Author Affiliations
Han B: School of Electrical and Electronics Engineering, State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Baoding 071003, Hebei, China [ORCID]
Li Y: School of Electrical and Electronics Engineering, State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University, Baoding 071003, Hebei, China
Journal Name
Energies
Volume
13
Issue
7
Article Number
E1753
Year
2020
Publication Date
2020-04-06
Published Version
ISSN
1996-1073
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PII: en13071753, Publication Type: Journal Article
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LAPSE:2023.22521
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doi:10.3390/en13071753
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