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Protection of DC Microgrids Based on Complex Power During Faults in On/Off-Grid Scenarios
IEEE transactions on industry applications, 2023The DC microgrid is an effective platform for integration of renewable energy sources, energy storage systems, and smart electronic loads. However, the integration of distributed generators can result weak fault currents with change in its direction ...
S. K. Prince, Shaik Affijulla, G. Panda
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Robust Traveling Wave-Based Protection Scheme for Multiterminal DC Grids
IEEE Transactions on Power Delivery, 2023The DC transmission line protection technology is crucial for the development of multi-terminal Voltage Source Converter (VSC)-based HVDC systems. This article proposes a robust non-unit traveling wave protection (TWP), which deals with the DC fault area
Le Liu, A. Lekić, M. Popov
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A Comprehensive Review of Multiport DC Circuit Breakers for MTdc Grid Protection
IEEE transactions on power electronics, 2023Voltage source converter–based multiterminal dc (MTdc) grids, including high- and medium-voltage levels, have attracted attention in recent years and developed fast.
Shuo Zhang +4 more
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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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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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A Comprehensive Evaluation method of DC Protection System Based on IAHP Method
Information Security Practice and Experience, 2019The direct current protection system is facing many problems, such as security disturbance, complex equipment and inefficient operation and maintenance and so on.
Ting Wang +5 more
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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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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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Coordination of MMC converter protection and DC line protection in DC grids
2016 IEEE Power and Energy Society General Meeting (PESGM), 2016This paper studies the coordination of MMC converter protection and DC line protection in DC transmission networks. To quickly isolate a DC line fault, hybrid DC circuit breaker is connected at each end of every DC transmission line. DC line protection based on measuring derivative of DC voltage is employed to timely trip faulted DC line only. The goal
null Weixing Lin +3 more
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