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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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DC/DC Converter for Integration of Renewable into DC mu-Grid
2022 IEEE International Conference on Environment and Electrical Engineering and 2022 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe), 2022This paper suggests a new high voltage gain DC-DC power electronics boosting converter. Many recent applications demand that an input voltage source is boosted to provide a much larger output voltage to be used elsewhere. The modern photovoltaic/fuel-cell sources or battery to mu-grid (mutext{-} grid) structure heavily depends on the voltage boosting ...
Marey, Amr +5 more
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DC electric springs - An emerging technology for DC grids
2015 IEEE Applied Power Electronics Conference and Exposition (APEC), 2015There is widespread attention on integrating renewable energy sources, such as the solar power, to DC distributed power systems and DC microgrids. The voltage stability and the power quality issues are of concern if a large proportion of power sources in these DC power systems are generated by intermittent renewable energy sources.
Wang, M, Hui, SYR, Tan, SC, Mok, KT
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Developing regional, radial DC grids and their interconnection into large DC grids
2014 IEEE PES General Meeting | Conference & Exposition, 2014The development of future DC grids has high importance for future EU energy policy, but the technologies and DC grid topology are still uncertain. This article studies the concept of building large DC grids as an interconnection of regional radial DC systems. The radial topology enables very simple and robust DC system protection. It is not feasible to
Dragan Jovcic +3 more
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2020
This chapter provides the introduction to dc grid. A historical perspective of the dc grid is provided, followed by major installations of the high voltage dc (HVDC) transmission systems. Comparison of ac and dc systems are given in terms of operation, cost.
Abhisek Ukil +2 more
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This chapter provides the introduction to dc grid. A historical perspective of the dc grid is provided, followed by major installations of the high voltage dc (HVDC) transmission systems. Comparison of ac and dc systems are given in terms of operation, cost.
Abhisek Ukil +2 more
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Impact of DC-DC Converters for DC Grid Voltage Support
2019 IEEE 3rd Conference on Energy Internet and Energy System Integration (EI2), 2019Modern power system is undergoing a gradual change from conventional sources of energy to renewable sources. This change requires restructuring of the power system so as to support the integration without compromising the security and stability. The power system itself is divided into smaller subsystems and the operation of these subsystems which are ...
Salman Salman +4 more
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Two-input boosting DC-DC converter for DC-grid applications
2013 International Conference on Green Computing, Communication and Conservation of Energy (ICGCE), 2013A new two-input Boost plus SEPIC based dc-dc converter suitable to draw power from two different input dc sources and supplying to a common dc-bus/ load is presented in this paper. This is a two-switch converter and has five energy storage elements resulting in a fifth-order converter.
M. Veerachary +2 more
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Dual Two-Stage Isolated Bidirectional DC-DC Converter for DC Grid Storage
2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia), 2018One of the trends for low-voltage dc grids is the use of a two-line dc distribution in order to facilitate the interface to present-time ac grids, and also to allow the flexible use of diverse loads. Another feature of such dc grids is the distributed storage elements in houses and buildings.
Tibola, G., Duarte, J.L.
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Proceedings of the 2014 15th International Scientific Conference on Electric Power Engineering (EPE), 2014
DC electricity systems are making a comeback. Not as a competitor to AC but as a partner, where DC offers advantages which AC cannot match.
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DC electricity systems are making a comeback. Not as a competitor to AC but as a partner, where DC offers advantages which AC cannot match.
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Combined DC Power Flow Controller for DC Grid
2018 International Power Electronics Conference (IPEC-Niigata 2018 -ECCE Asia), 2018The utilization of DC power flow controller can increase the control freedom in the complex DC gird, which will improve both the active power distribution and coordination control performance of DC grid. The general concept frame of Combined DC power flow controller has been proposed in this paper, as well as a detailed topology.
null Xu Zhong +5 more
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