Results 61 to 70 of about 485 (183)

Estimation of Positive‐, Negative‐, and Zero‐Sequence Current and Voltage Phasors of UIPC VSCs for Short‐Circuit Faults in Transmission Lines

Engineering Reports, Volume 7, Issue 2, February 2025.
1. Presenting a phasor estimation model for 72‐pulse converters of UIPC device based on artificial neural networks. 2. Using the data of a single terminal to estimate for various types of short circuits on both sides of UIPC. 3. No need for a predetermined threshold value to detect the fault side around UIPC. 4.
Babak Bahadori, Ali Nahavandi, Mahyar Abasi   +2 more
wiley   +1 more source

Voltage sag assessment method considering low-voltage ride-through of inverter-interfaced distributed generators

International Journal of Electrical Power & Energy Systems
Voltage sags often disrupt the normal functioning of sensitive equipment and distributed generators (DGs), making voltage sag mitigation based on corresponding assessments crucial. Voltage sag characteristics, including voltage magnitude and sag duration,
Xian-yong Xiao, Gui-shan Song, Wen-Xi Hu, Xin-yue Song   +3 more
doaj   +1 more source

Frequency‐Power Coupling Dynamic Response and Regulation Characteristics of Variable Speed Pumped Storage Unit With Full‐Size Converter

Energy Science &Engineering, Volume 13, Issue 2, Page 811-832, February 2025.
Water diversion system of the variable speed pumped storage unit with full‐size converter. ABSTRACT This paper aims to study the frequency‐power coupling dynamic response and regulation characteristics of a variable speed pumped storage unit (VSPSU) with full‐size converter (FSC).
Yanhao Li, Kedong Shu, Wencheng Guo
wiley   +1 more source

Research on the Technology of Low Voltage Ride-through for Grid-connected Photovoltaic Inverter

Kongzhi Yu Xinxi Jishu, 2013
It analyzes the current commonly used LVRT (low voltage ride-through) solutions, presents a new LVRT SPLL (software phase locked loop) technique which is simpler and faster, and designs a grid-connected PV (photovoltaic) inverter based on the SPLL ...
WANG Nan, CHEN Yifeng, WU Hengliang
doaj  

Low-voltage ride-through control strategy for permanent magnet synchronous generator under weak grid

Diance yu yibiao
In order to improve the low-voltage ride-through（LVRT）capability of permanent magnet synchronous generator（PMSG）under weak grid, this paper proposes a low-voltage ride-through control strategy for power support and auxiliary protection of unloading ...
CHEN Zhong, DING Linzhi, GU Chunsong
doaj   +1 more source

Enhancement of Low Voltage Ride Through (LVRT) Capability of DFIG-Based Wind Turbines with Enhanced Demagnetization Control Model

Energies
Since the stator of DFIG-based wind turbines is directly connected to the grid, it is dramatically affected by transient situations that may occur on the grid side. In order to meet grid code requirements, reactive power support must be provided to keep the DFIG connected to the grid during the transient state. To achieve this, Low Voltage Ride Through
M. Kenan Döşoğlu, Muhsin Uğur Doğan
openaire   +2 more sources

A Low‐Frequency Transformer Protection Method Based on Excitation Inductance Parameter Identification

IET Electric Power Applications, Volume 19, Issue 1, January/December 2025.
In this paper, we propose a method to effectively identify faults and excitation inrush currents in the area by using the characteristics of instantaneous excitation inductance, so as to improve the reliability and accuracy of low‐frequency transformer protection in offshore wind power low‐frequency transmission system.
Shuping Gao, Zhe Quan, Xinyu Wu, Chenqing Wang, Shi Chen, Yaming Ge, Xiangping Kong   +6 more
wiley   +1 more source

Study on Low Voltage Ride Through for Direct-drive VSCF Wind Power System

Kongzhi Yu Xinxi Jishu, 2010
New grid regulation brings forward the requirements on wind turbines for having Low Voltage Ride Through(LVRT)capability and supplying reactive power compensation to the grid during voltage sag prcoess.
张宪平
doaj  

Comparative analysis of metaheuristic algorithms-based control for enhancing low voltage ride through in grid-connected photovoltaic systems

Ain Shams Engineering Journal
This paper aims to investigate the improvement of the low voltage ride-through (LVRT) in grid-connected photovoltaic (PV) systems by applying the Gold Rush Optimization (GRO) algorithm to design system PI controllers.
Yasmin GH. Mousa, Tarek S. Abdelsalam, Hany M. Hasanien, Zia Ullah, Abdulaziz Alkuhayli, Mohamed Mokhtar   +5 more
doaj   +1 more source

A Novel Low Voltage Ride-Through Technique of Three-Phase Grid-Connected Inverters Based on a Nonlinear Phase-Locked Loop

IEEE Access, 2019
In this paper, a novel low voltage ride-through (LVRT) technique for three-phase grid-connected inverters is proposed. The proposed technique consists of two parts: a nonlinear phase locked loop based on complex-coefficient filters (NLCCF-PLL) and an ...
Guangyu Sun, Yongli Li, Wei Jin, Song Li, Yan Gao   +4 more
doaj   +1 more source