Results 61 to 70 of about 835 (180)

Design and Optimization of Dynamic Voltage Restorers for Enhancing Power Quality and Fault Ride through (FRT) in Grid-Integrated Hybrid Energy Systems

SMART MOVES JOURNAL IJOSCIENCE
The integration of renewable energy sources, such as solar and wind, into modern power grids presents challenges in maintaining power quality and stability, particularly under fault conditions like voltage sags and swells. This research focuses on the design and optimization of Dynamic Voltage Restorers (DVRs) to enhance power quality and Fault Ride ...
Vardhan Patidar, Ashish Bhargava
openaire   +1 more source

Short‐Circuit Current Analysis of Grid‐Connected Inverters: An Analytical Approach Using Hardware Natural Response and Control Superposition

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
This paper proposes a closed‐form analytical framework predicting the sub‐cycle transient peak currents of grid‐following and grid‐forming inverters during short‐circuit faults. The method uniquely decouples the fault current into a hardware natural response and a control‐commanded response, enabling rapid estimation of instantaneous initial peaks ...
Ziqian Zhang, Robert Schuerhuber
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

Addressing Distance Relay Mal‐Operation in Low‐Inertia Grids: A PLL‐Informed Power Swing Assessment

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
A key advantage of the proposed approach is its independence from PLL control settings, relying solely on locally measured electrical quantities, which ensures robust, fast, and practical implementation in existing commercial distance relays. ABSTRACT The increasing penetration of inverter‐based resources (IBRs) has substantially reduced system inertia
Ahmad Reza Baghaei, Hamid Reza Izadfar, Hamid Yaghobi   +2 more
wiley   +1 more source

Enhanced Fault Ride-through Scheme for Mitigating Rotor Speed Instability of Doubly Fed Induction Generator Based Wind Farms [PDF]

, 2010
This paper analyzes and proposes a novel scheme with suitable control strategy to increase the probability of successful fault ride-through (FRT) as well as to enhance the rotor speed stability of doubly fed induction generator (DFIG) based wind farms ...
M P Selvan, K Vinothkumar
core   +1 more source

Dynamic Impact of Voltage-Dependent Current Injection on Fault-Ride-Through of Grid-Following Converters [PDF]

, 2021
This article analyzes transient stability of grid-following voltage source converters (GFL-VSCs) considering the voltage-dependent current injection (VDCI) dynamics during fault-ride-through (FRT).
Wu, Heng; id_orcid, Wang, Xinshuo, Xinshuo Wang, Wang, Xiongfei; id_orcid, Dall, Laurids, Jun Bum Kwon, Kwon, Jun Bum, Xiongfei Wang, Laurids Dall, Heng Wu   +9 more
core   +1 more source

Reliability Improvement of GFM Inverters: Diagnosing DC‐Side Instability Mechanisms and Overvoltage Faults Induced by PV and ESS

IET Power Electronics, Volume 19, Issue 1, January/December 2026.
This paper investigates GFM inverter reliability by analysing DC‐side dynamics from PV and ESS, which can cause DC‐link overvoltage and instability. We demonstrate that high PV generation is a key threat, while counter‐intuitively, limiting ESS capacity can enhance stability by damping control‐induced oscillations.
Fan Tang, Jiayu Liu, ZhenLin Ni, Yu Wang, XiFang Huang, Yang Cao   +5 more
wiley   +1 more source

Strengthening Renewable‐Rich Weak Grids Through Improved Voltage Stability and Fault‐Ride Through Capability

IET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.
To enhance grid stability and resilience in high renewable energy scenarios, this research proposes a cascaded control optimization framework guided by a novel dynamic resilience metric. Validated on a representative Australian grid, the framework significantly reduced voltage overshoot and extended fault clearing times, offering a robust solution for ...
Sadnan Sakib, Muhammad Ahsan Zamee, M. J. Hossain, Md. Biplob Hossain, Md. Ahasan Habib   +4 more
wiley   +1 more source

Hierarchical Response Control Method for Voltage Support in DFIGs Considering Fatigue Loads

IET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.
This paper proposes a hierarchical response control (HRC) method to address the increased fatigue load on wind turbines during reactive power support for grid voltage stability. By establishing a fatigue sensitivity model and dynamically adjusting control parameters, the method optimally allocates reactive power while avoiding critical shaft ...
Bin Yang, Xiaodong Wang, Yingwei Wang, Sheng Chang, Deyi Fu, Xing Gao, Xianjiang Hu, Yingming Liu   +7 more
wiley   +1 more source