Results 71 to 80 of about 201,222 (195)
International Journal of Electrical Power & Energy SystemsThis paper analyzes the fault equivalent models of grid-following and grid-forming converters under various fault conditions. A novel fault calculation method for MMC-HVDC grid-forming systems integrated with 100% renewable energy generation is proposed.
Bohao Zhou +5 more
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Mapping of grid faults and grid codes
, 2007 The present report is a part of the research project "Grid fault and design basis for wind turbine" supported by Energinet.dk through the grant PSO F&U 6319. The objective of this project is to investigate into the consequences of the new grid connection requirements for the fatigue and extreme loads of wind turbines.
Iov, Florin +3 more
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Fault Ride-Through Control Strategies of Grid-Forming Inverters Under Grid Faults
Education and Research ArchiveGrid-forming (GFM) inverters are increasingly deployed in modern power systems due to their strong voltage and frequency support capabilities, as well as their high robustness in weak grids. However, unlike traditional synchronous generators with high overcurrent tolerance, GFM inverters can only withstand 1 to 1.5 per-unit of their rated current due ...
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Performance of Grid Connected Wind Turbines under Grid Faults
, 2022 Power systems face new challenges as the converter-based generation, such as wind and solar, becomes more prevalent. Compared to conventional power systems, networks with a high volume of power electronic converters lack features, like mechanical inertia, that are traditionally provided by synchronous generators. Therefore, the grid codes for converter-
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Intelligent information systems for power grid fault analysis by computer communication technology
Energy InformaticsThis study aims to enhance the intelligence level of power grid fault analysis to address increasingly complex fault scenarios and ensure grid stability and security.
Ronglong Xu, Jing Zhang
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Control Strategy for Potential Vector Remolding Fault Ride-through in Grid-forming MMC [PDF]
Dianli jianshe[Objective] The operational characteristics of the grid-forming modular multilevel converter （MMC） in offshore wind power transmission systems under short-circuit faults in the receiving-end grid are unclear， and the interaction mechanism between fault ...
FANG Chaoxiong, TANG Yuchen, LIN Yi, SHEN Hao, PAN Chao, BIAN Xiaoyan, ZHAO Jinbin
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Fault location and isolation technology for power grid automation based on intelligent algorithms
Energy InformaticsBackground Power grid automation is critical for maintaining the stability and reliability of electrical grids. A major challenge in power grid management is identifying and isolating faults quickly and accurately to avoid widespread disruptions ...
Qi Guo +4 more
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Checkpointing of parallel applications in a Grid environment [PDF]
, 2011 The Grid environment is generic, heterogeneous, and dynamic with lots of unreliable resources making it very exposed to failures. The environment is unreliable because it is geographically dispersed involving multiple autonomous administrative domains ...
Sajadah, K., Sajadah, K.
core
Abstract This chapter presents the grid fault modelling as the basic prerequisite of the model-based protection algorithm. In Sec. 7.1, the model-based fault analysis is defined. The basic concept of the model-based protection algorithm is introduced and compared to existing protection schemes.
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Journal of Electrical SystemsImplementation of micro grid concept creates several issues to the existing protection scheme in the radial distribution network. Depending on the location and capacity of the distributed generators, the short-circuit current from the main grid and distributed generations causes variations in the fault current levels inside the micro grid.
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