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Unified Impedance-Based Relaying Scheme for the Protection of Hybrid AC/DC Microgrid
IEEE Transactions on Smart Grid, 2022Even though the implementation of hybrid AC/DC microgrid is increasing, their protection schemes face multiple challenges such as inconsistent fault current supply from DGs, difficulty in discriminating internal/ external faults and missing of universal ...
Reddipalli Bhargav +2 more
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DC bus strength in DC grid protection
2017 International Symposium on Power Electronics (Ee), 2017Fast detection and isolation of DC faults is recognized as the main challenge in developing DC transmission grids. Voltage source converter blocking must be prevented which can be very difficult given the large rate-of-rise of fault currents. The concept of multi-converter DC bus is introduced as a grid design approach aimed towards increasing ...
Mario Zaja, Dragan Jovcic, Masood Hajian
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Active Converter Injection-Based Protection for a Photovoltaic DC Distribution System
IEEE transactions on industrial electronics (1982. Print), 2022Due to the complex structure of flexible dc distribution systems with distributed photovoltaic power, single-ended measurement based protection cannot work well.
K. Jia +4 more
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Setting-Less Nonunit Protection Method for DC Line Faults in VSC-MTdc Systems
IEEE transactions on industrial electronics (1982. Print), 2022Existing nonunit protection schemes inevitably require setting, which is a serious problem in practical engineering. Faults occurred at different fault zones will result in different equivalent models, therefore, the fault zone can be determined by ...
Chenhao Zhang +3 more
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A Battery-Energy-Storage-Based DC Dynamic Voltage Restorer for DC Renewable Power Protection
IEEE Transactions on Sustainable Energy, 2022The limitation of theDC protection device confines the development of MV/LVDC grids. This paper presents a DC dynamic voltage restorer to exploit DC custom power devices for DC distribution networks in principle.
Ruo-Huan Yang +6 more
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The Status of DC Micro-Grid Protection
2008 IEEE Industry Applications Society Annual Meeting, 2008AC microgrids are a convenient approach to integrating distributed energy systems with utility power systems. On the other hand, DC micro-grids can lead to more efficient integration of distributed generation. They are the preferred topology for present shipboard, aircraft and automotive power systems and hold promise for future environmentally ...
Robert M. Cuzner, Giri Venkataramanan
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Resilient Protection of Medium Voltage DC Microgrids Against Cyber Intrusion
IEEE Transactions on Power Delivery, 2022Differential current protection has been a reliable approach for line protection in DC systems. However, due to its dependence on communication for terminal current information, resiliency of such a protection approach is poor against external cyber ...
Vaibhav Nougain +2 more
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Overload protection in digitally controlled DC-DC converters
2006 37th IEEE Power Electronics Specialists Conference, 2006This paper presents an approach to overload protection based on a predictive average current-mode control technique for digitally controlled DC-DC switched-mode power supplies. The proposed approach can be applied in voltage-mode or current-mode control architectures. The current limit, the converter actions upon detecting an overload, and the shape of
Hao Peng, Dragan Maksimovic
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DC Microgrid: A Comprehensive Review on Protection Challenges and Schemes
IETE Technical Review, 2022The development of microgrids can prove to be a game changer in the realization of future smart grids. The increasing trends of automation in domestic loads and smart homes have increased the penetration of DC loads at the distribution level.
K. Kant, O. Gupta
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A DC-DC boost converter with short circuit protection
Proceedings of IECON'94 - 20th Annual Conference of IEEE Industrial Electronics, 2002In this paper, a modified DC/DC boost power convertor topology is proposed that provides short circuit protection to all power semiconductor devices of the power circuit. The proposed topology is analysed and simulated, and the experimental results obtained from a 160 W unit confirm the analysis. >
G.A. Garvelis, S.N. Manias, G. Kostakis
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