Results 11 to 20 of about 44,201 (267)
Ultra-Solvatochromic Probe Based on Binaphthofuran for Visual Detection of Early Trace Oil Leakage in Oil Reservoir Capsules [PDF]
MoleculesThe long-term reliability of converter transformers hinges on the integrity of oil reservoir capsules, whose early-stage oil leakage detection remains challenging.
Yihang Zhang +5 more
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Improved Power Flow Methods for DC Grids [PDF]
2020 IEEE 29th International Symposium on Industrial Electronics (ISIE), 2020 This paper presents a steady-state model and as-sociated power flow equations that can be applied to any dc grid. State-of-art power flow methods and two newly proposed methods are discussed and applied to the proposed steady-state model. A standardized IEEE test feeder is used to benchmark the power flow methods with respect to accuracy, convergence ...
Nils H. Van Der Blij +6 more
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Strategy for DC Microgrid Energy Management Based on RG-DDPG
Zhongguo dianli, 2023 The randomness and intermittency of distributed energy have brought great challenges to the energy management of direct current (DC) microgrids. In order to solve this challenge, a DC microgrid energy management strategy based on reward guidance deep ...
Jianbiao LI +7 more
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Energies, 2023 Voltage source converter (VSC)-based DC distribution networks (DCDNs) can automatically adjust the control strategy of overloaded VSCs to adapt to the variation in renewable energy power, but it brings difficulties to the steady-state performance ...
Ruixiong Yang +4 more
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Stability analysis of hybrid synchronization controller based grid forming control
Energy Reports, 2023 Synchronization units are vital for the stable operation of grid-tied converters in generation and transmission. There are two main synchronization units, i.e., phase-locked loop (PLL) and power synchronization controller (PSC), with the corresponding ...
Rongcai Pan +5 more
doaj +1 more source
Power Loss Analysis of a Multiport DC – DC Converter for DC Grid Applications [PDF]
IECON 2018 - 44th Annual Conference of the IEEE Industrial Electronics Society, 2018 In this paper, power losses of a multiport DC – DC converter are analysed. The converter has four bidirectional ports and consists of a triple active bridge and four half bridge converters. As a result, sixteen different operating modes, defined by all combinations of power flow direction, are possible.
Cephas Samende +5 more
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Multi-Terminal DC Grid with Wind Power Injection [PDF]
Wind, 2022 With the development of offshore wind generation, the interest in cross-country connections is also increasing, which requires models to study their complex static and dynamic behaviors. This paper presents the mathematical modeling of an offshore wind farm integrated into a cross-country HVDC network forming a multi-terminal high-voltage DC (MTDC ...
Lilantha Samaranayake +4 more
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Stability Comparison Between Grid-forming and Grid-following Based Wind Farms Integrated MMC-HVDC
Journal of Modern Power Systems and Clean Energy, 2023 Grid-forming (GFM) control based high-voltage DC (HVDC) systems and renewable energy sources (RESs) provide support for enhancing the stability of power systems. However, the interaction and coordination of frequency support between the GFM-based modular
Rongcai Pan +5 more
doaj +1 more source
IEEE Access, 2023 Compared with traditional DC power flow analysis; multi-voltage level DC grid power flow analysis is more complex due to its diverse operation methods. This article proposes the power flow calculation method in multi-voltage level DC grid considering the
Shifeng Ye +3 more
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Zhongguo dianli, 2021 China's primary energy production bases and load centers are inversely distributed and the renewable energy of the production base cluster is delivered through UHVDC cluster, so the coupling characteristics of wind power and DC are complex in the power ...
Zhaohui QIE +4 more
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