Results 51 to 60 of about 5,322 (194)

An Overcurrent Suppression Strategy for Distributed Photovoltaic Inverters Under Unbalanced Faults Based on Adaptive Linear Active Disturbance Rejection Control

IET Smart Grid, Volume 9, Issue 1, January/December 2026.
After distributed photovoltaic (PV) systems are connected to the distribution network, the overcurrent problem caused by transient faults instantaneously threatens the safety of PV inverters and other equipment. This paper proposes a comprehensive control method that combines active‐loop adaptive linear active disturbance rejection control (A‐LADRC ...
Dandan Zhu, Qian Zhou, Yongyong Jia, Dajiang Wang, Jianhui Meng, Xintong Dong, Junyuan Zhang   +6 more
wiley   +1 more source

Enhanced fault ride-through control for grid-forming inverters: comparative analysis and adaptive strategies

International Journal of Electrical Power & Energy Systems
As renewable energy technologies increasingly dominate as primary power sources, grid-forming (GFM) inverters have emerged as crucial components for future low inertia power systems, offering flexible inertia support and autonomous grid-forming ...
Liang Yuan, Zheng Liang, Hua Han, Mingxin Hu, Xubin Liu, Zhao Yang Dong   +5 more
doaj   +1 more source

Optimal Linear Protection Scheme of Inverter‐Based Distributed Energy Resources: Meeting Fault‐Ride‐Through Requirement

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
This paper presents a new two‐stage protection strategy for active distribution networks that not only addresses selectivity constraints along protected lines but also incorporates fault‐ride‐through (FRT) requirements of inverter‐based distributed energy resources (IBDERs). The proposed coordination strategy (PCS), which distinguishes it from previous
Amin Yazdaninejadi, Hossein Ebrahimi, Sajjad Golshannavaz, Zhiyi Li, Rajashik Paul   +4 more
wiley   +1 more source

A novel FRT strategy for transformerless MMC to improve current differential protection performance under single-phase grounding faults

International Journal of Electrical Power & Energy Systems
AC/DC distribution networks are interconnected by converters such as modular multilevel converters (MMCs). In AC/DC distribution networks, single-phase grounding (SPG) faults can cause enormous challenges in relay protection.
Yuze Li, Peng Guo, Qianming Xu, Josep M. Guerrero   +3 more
doaj   +1 more source

Fault Ride-Through Operation Analysis of Doubly Fed Induction Generator-Based Wind Energy Conversion Systems: A Comparative Review

Energies, 2022
In present electrical power systems, wind energy conversion systems based on doubly fed induction generators represent one of the most commonly accepted systems in the global market due to their excellent performance under different power system ...
Aftab Ahmed Ansari, Giribabu Dyanamina
doaj   +1 more source

Establishing the Partial Load Limits for Main Shaft Response Prediction in Wind Turbine Hybrid Nacelle Testing

Wind Energy, Volume 28, Issue 5, May 2025.
ABSTRACT Hybrid nacelle testing is a novel testing method that utilizes partial load tests in combination with virtual models to extrapolate the response at full load of the nacelle device under test. Validation of the virtual model at partial loads plays a crucial role in this type of hybrid test approach.
Muhammad Omer Siddiqui, Amir R. Nejad, Jan Wenske   +2 more
wiley   +1 more source

Receiving-end AC fault ride-through method of hybrid HVDC transmission based on adaptive DC voltage reduction

International Journal of Electrical Power & Energy Systems
The hybrid high-voltage direct current (HVdc) transmission that combines line-commutated converters (LCCs) at the sending end and modular multilevel converters (MMCs) at the receiving end is a promising choice for integrating bulk renewable power ...
Kailun Wang, Qiang Song, Qianhao Sun
doaj   +1 more source

Harmonic suppression and fault ride‐through method of diode‐rectifier‐based hybrid high‐voltage direct current system for offshore wind farms integration

IET Generation, Transmission & Distribution, 2023
The diode‐rectifier (DR)‐based high‐voltage direct current (HVDC) transmission is regarded as a low‐cost alternative to the HVDC transmission for offshore wind farms (OWFs) integration.
Zixi Fang, Renxin Yang, Xu Cai, Xinchi Wei, Kunpeng Zha, Haotian Yu   +5 more
doaj   +1 more source

Improved LVRT Grid Code under Islanding Condition [PDF]

, 2015
The grid code Low Voltage Ride Through (LVRT) requires Renewable Energy Sources (RESs) to remain connected to the grid following the voltage sags resulting from disturbances. The LVRT pattern is based on voltage sag magnitude and its duration at Point of
Bak, Claus Leth, Hoseinzadeh, Bakhtyar, Silva, Filipe Miguel Faria da   +2 more
core   +2 more sources

Blocking Converter Criteria Considering Protection Coordination Strategies of VSC‐MTDC

IET Energy Systems Integration, Volume 7, Issue 1, January/December 2025.
ABSTRACT Multiterminal high‐voltage direct current (MTDC) systems are anticipated to enable the massive integration of renewable energies into modern grids. However, the protection of MTDC systems is a major challenge for their application in connection with offshore wind farms (OWF).
Jalal Sahebkar Farkhani, Jonathan Cervantes Gomez, Peter Jan Randewijk, Claus Leth Bak, Zhe Chen   +4 more
wiley   +1 more source