Results 21 to 30 of about 45,404 (267)
Application aspects of multiterminal DC power transmission [PDF]
IEEE Transactions on Power Delivery, 1990 Four practical multiterminal DC systems are described. Two are already in commercial operation: Nelson River (double-bipole four-terminal), and Sardinia-Corsica-Italy (two-terminal monopolar tapped to become three-terminal). Two others are expansions of existing systems and are under construction: Pacific HVDC (high-voltage DC) Intertie (bipolar four ...
W.F. Long +6 more
openaire +1 more source
A Unidirectional DC-DC Autotransformer for DC Grid Application
Energies, 2018 Conventional unidirectional DC-DC converters for DC grid application employ DC-AC-DC two-stage conversion technology and suffer from high converter cost and power loss.
Meng Zhou +4 more
doaj +1 more source
Zhongguo dianli, 2023 In order to suppress the transient overvoltage of direct current (DC) sending-end power grid and make full use of wind power in the power regulation of wind-thermal-bundled DC transmission system, a reactive voltage emergency control strategy considering
Wenjun ZHOU +5 more
doaj +1 more source
Power Upgrading of Transmission Line by Combining AC-DC Transmission and Analysis of UPFC [PDF]
International Journal of Trend in Scientific Research and Development, 2019 The basic concept in designing of any power lines in transmission of ac dc power with power upgrading using UPFC is proposed through a single circuit ac transmission line. In this proposal certain limitation are their due to the use of ground as return path.
Sandeep Sonwane, Pratik Ghutke
openaire +2 more sources
A Recursive Solution for Power-Transmission Loss in DC-Powered Networks [PDF]
Energies, 2014 This article presents a recursive solution to the power-transmission loss in DC-powered networks. In such a network, the load cannot be modeled as a fixed equivalent resistance value, since the switching regulator may draw more or less current based on the actual supply voltage to meet the power demand.
Sehwan Kim, Pai H. Chou
openaire +2 more sources
Frontiers in ElectronicsThis paper addresses the critical need to determine the stable operating limit of modular multilevel converter-based high voltage direct current (MMC-HVDC) systems, particularly concerning the integration of extensive renewable energy sources. To achieve
Maolan Peng +3 more
doaj +1 more source
Simulation and analysis of UHV half wavelength and DC hybrid transmission system
Global Energy Interconnection, 2018 The scenarios of a half wavelength transmission line (HWTL) connected to the original DC asynchronous interconnection system are established based on the quasi-steady state model of HWTL, which include single or double loops of single channel and multi ...
Qianyu Zhao +4 more
doaj +1 more source
Frequency Dynamic Characteristic Analysis of Ultra-Low Frequency Oscillation and Multi-Machine GPSS Parameter Tuning Method [PDF]
Dianli jianshe[Objective] The growing concern over frequency stability is attributed to the decreasing overall inertia of power systems. To improve the analysis of frequency stability and performance of modern power systems， a frequency dynamic characteristic analysis
ZENG Pijiang, XU Hao, YE Pengju, ZHENG Chao, SAI Xiangyu, CHEN Gang, ZHAO Yong, JIANG Chuyang, GAN Deqiang
doaj +1 more source
A Comprehensive Loss Model and Comparison of AC and DC Boost Converters
Energies, 2021 DC microgrids have become a prevalent topic in research in part due to the expected superior efficiency of DC/DC converters compared to their AC/DC counterparts.
Daniel L. Gerber +6 more
doaj +1 more source
FEBS Open Bio, EarlyView.The dual roles of CC and CXC chemokines in distinguishing active, latent, and subclinical tuberculosis were reviewed, along with an evaluation of their potential as diagnostic biomarkers and therapeutic targets to advance precision medicine in tuberculosis management. The graphical abstract was generated with AI assistance (Gemini 3.0).
Xuying Yin, Dangsheng Xiao, Jiezuan Yang
wiley +1 more source