Results 81 to 90 of about 679,827 (169)

control-protection-grids-tudelft/HVDC-RTDS-models: HVDC_models

<p>HVDC/AC models with the European ratings.</p ...
HVDC/AC Control, Aleksandra Lekić, Ajay
core   +1 more source

An Economic Performance Improving and Analysis for Offshore Wind Farm-Based Islanded Green Hydrogen System

Energies
When offshore wind farms are connected to a hydrogen plant with dedicated transmission lines, for example, high-voltage direct current, the fluctuation of wind speed will influence the efficiency of the alkaline electrolyzer and deteriorate the techno ...
Wei Feng, Liu Yang, Kai Sun, Yuebin Zhou, Zhiyong Yuan   +4 more
doaj   +1 more source

HVDC grid rollout in the European context: current status and challenges of HVDC grid protection

, 2021
This article provides an up-to-date overview of technologies and explores key barriers on the path to implementing High Voltage DC (HVDC) grid protection in the European context.
Jahn, Ilka,, Rault, Pierre,, Leterme, Willem,, Sharifabadi, Kamran,, Van Hertem, Dirk,, Yang, Yongtao,, Jovcic, Dragan,, Takashi, I.,, Nee, Simon,, Poullain, Serge,, Chaffey, Geraint,, Koreman, Kees,   +11 more
core  

Hierarchical Coordinated Reactive Power Optimization of Wind Farm Clusters Using Environment-Aware Particle Swarm Optimization

Energies
Large-scale wind-farm clusters are characterized by intense power fluctuations, various turbine types and time-varying reactive power margins, along with conflicting goals of voltage security and network loss reduction.
Qihui Liu, Ting Wei, Xipeng Cai, Yihua Zhu, Chao Luo   +4 more
doaj   +1 more source

Overview of Coordinated Control Strategies of Wind Farm Integrated MMC-HVDC

CES Transactions on Electrical Machines and Systems
With the development of onshore power grid projects in desert, Gobi and desertified regions as well as offshore wind power projects, electric energy requires long-distance transmission due to insufficient local consumption.
Jingyi Zhang, Huiru Yang, Zhen Tian, Meng Huang, Pan Feng, Fei Liu, Zhe Chen, Ruanming Huang, Xiaoming Zha   +8 more
doaj   +1 more source

High‐speed main protection for multiterminal LCC‐MMC‐UHVDC based on initial wave process comparison

IET Generation, Transmission & Distribution
The multiterminal LCC‐MMC‐UHVDC, which employs an LCC on the rectifier side and multiple FHMMCs on the inverter side, has emerged as a cutting‐edge technology.
Yan Li, Jun Li, Guiyuan Li, Runbin Cao, Xinjie Zeng, Ning Tong   +5 more
doaj   +1 more source

A Nonlinear Extended State Observer-Based Load Torque Estimation Method for Wind Turbine Generators

Eng
As global demand for clean and renewable energy continues to rise, wind power has become a critical component of the sustainable energy transition.
Yihua Zhu, Jiawei Yu, Yujia Tang, Wenzhe Hao, Zhuocheng Yang, Guangqi Li, Zhiyong Dai   +6 more
doaj   +1 more source

Load-Side Encoder-Based Redundant Control Framework for PMSG Wind Energy Conversion Systems

Inventions
In permanent magnet synchronous generator-based wind energy conversion systems, generator-side measurements may become unreliable due to sensor faults, which can degrade system reliability.
Zijian Zhang, Wenzhe Hao, Chao Luo, Jiawei Yu, Yihua Zhu, Zhiyong Dai, Guangqi Li   +6 more
doaj   +1 more source

Comparative AC-DC Interaction Analysis for Grid-Following and Grid-Forming HVDC Converters

AC-DC interactions in modular multi-level converters (MMCs) tend to play a critical role in the small-signal stability of HVDC systems, particularly when considering grid-forming (GFM) control, as required by German grids codes for future HVDC ...
Guillaud, Xavier, Lamrani, Yahya, Zhang, Yonggang, Hachmann, Christian, Braun, Martin, Wiese, Nils   +5 more
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An Enhanced CDSC-Based Grid Parameter Estimation Method for Distorted Grids

Energies
In modern power systems, DC offset and odd-order harmonics degrade grid phase and frequency estimation accuracy. To address this problem, this paper proposes an enhanced grid parameter estimation scheme based on cascaded delayed signal cancellation (CDSC)
Yihua Zhu, Jiawei Yu, Chao Luo, Youfeng Zhou, Xuetong Wang, Guangqi Li, Zhiyong Dai   +6 more
doaj   +1 more source