Results 31 to 40 of about 504,263 (307)

Transient stability analysis in Multi-terminal VSC-HVDC grids [PDF]

, 2016
A novel approach to transient stability analysis in multi-terminal high voltage direct current (MTDC) grids is presented in this paper. A symmetrical three-phase fault in an ac grid connected to a rectifier terminal of the MTDC grid causes the power ...
Anaya-Lara, O., Endegnanew, A. G., Haileselassie, T. M., Uhlen, K.   +3 more
core   +1 more source

Adjustable inertial response from the converter with adaptive droop control in DC grids [PDF]

, 2018
In a DC grid, the inherent inertial support from the DC capacitors is too small to resist step changes or random fluctuations from the intermittent power resources, which results in lower DC voltage quality. In this paper, an adaptive droop control (ADC)
Hei, Yang, Meng, Jianhui, Wang, Chen, Wang, Yi, Xu, Lie   +4 more
core   +1 more source

A Novel Grid Connected Dc-Dc Converter

International Journal of Advanced Research in Electrical, Electronics and Instrumentation Engineering, 2014
This paper proposes a three-port grid based dc-to-dc power conversion circuit for low range distributed systems. With this converter, the load can be powered from two different dc sources, which can be a combination of two from a solar-cell panel, a fuel-cell set, a battery bank, etc. and grid source,.
G K Mahesh,, R.Lokeswar Reddy
openaire   +1 more source

Power-Based Droop Control in DC Microgrids Enabling Seamless Disconnection From Upstream Grids [PDF]

, 1997
This paper proposes a local power-based droop controller for distributed energy resource converters in dc microgrids that are connected to upstream grids by grid-interface converters.
Atherton, C., Bakwin, P., Brasseur, G., Carroll, M., Dickerson, R., Doddridge, B., Emmons, L., Gerbig, C., Hauglustaine, D., Honrath, R., Hubler, G., Jacob, D., Jaffe, D., Kondo, Y., Levy, H., Munger, J., Penner, J., Rohrer, F., Sillman, S., Torres, A., VanVelthoven, P., Volz-Thomas, A., Wang, Y., Wauben, W.   +23 more
core   +1 more source

The Optimal Acoustic Measurement Point Selection for UHV Reactors in Substations Based on Equivalent Impedance and Information Entropy Theory

IEEE Access
The operation of an Ultra-High Voltage (UHV) shunt reactor generates significant acoustic signals containing crucial information. To accurately assess the various acoustic parameters of ultra-high voltage shunt reactors, it is crucial to establish an ...
Yingwen Li, Zhen Wei, Huilian Liao, Lin Li, Peizhong Zhang, Jingyun Zhao   +5 more
doaj   +1 more source

A New Buck-Boost AC/DC Converter with Two-Terminal Output Voltage for DC Nano-Grid

Energies, 2019
Due to the development and deployment of renewable DC power sources and their inherent advantages for DC loads in applications, the DC nano-grid has attracted more and more research attentions; especially the topologies of AC/DC converters are ...
Xiangkun Li, Weimin Wu, Houqing Wang, Ning Gao, Henry Shu-hung Chung, Frede Blaabjerg   +5 more
doaj   +1 more source

Power quality issues of 3MW direct-driven PMSG wind turbine [PDF]

, 2015
This paper presents power quality issues of a grid connected wind generation system with a MW-class direct-driven permanent magnet synchronous generator (PMSG).
Ahmed, IA, Taylor, GA, Zobaa, AF
core   +1 more source

Bipolar output direct‐coupled DC–DC converter applied to DC grids

The Journal of Engineering, 2018
The unipolar‐input bipolar‐output DC–DC converters with megawatt rating are the key equipment in the multi‐terminal HVDC and DC grids, especially in the DC wind farm. This paper presents a novel direct‐coupled transformerless DC–DC converter to interconnect unipolar DC system with bipolar DC transmission line based on cascaded sub‐modules.
Lingyu Guo, Gang Yao, Chengjun Huang, Lidan Zhou   +3 more
openaire   +2 more sources

A Multilevel Bidirectional Four-Port DC-DC Converter to Create a DC-Grid in Solid-State Transformers with Hybrid AC/DC Grids

2021 International Young Engineers Forum (YEF-ECE), 2021
Smart grids are incessantly contemplating new challenges about power electronics technologies, and this paper focuses on the application of solid-state transformers (SSTs) and the forthcoming perspective of hybrid AC/DC grids. In such perspective, a multilevel bidirectional four-port (MB4P) DC-DC converter is proposed to be integrated in a three-phase ...
Monteiro, Vítor Duarte Fernandes, Oliveira, Cátia Patrícia Fraga, Afonso, João L.   +2 more
openaire   +2 more sources

A Terminal Tube Text Detection and Recognition Method Based on Improved YOLOv7-Tiny and CRNN

IEEE Access
In the process of intelligent inspection of substation terminal line, the automatic identification of terminal coding tube is a crucial step. This study proposes a new method for text detection and recognition of terminal coding tube based on deep ...
Liao Huilian, Du Xingwei, He Luhang, Wang Shanlei, Yao Meng, Zou Hongbo   +5 more
doaj   +1 more source