Results 31 to 40 of about 34,712 (114)

Issues and Challenges of Grid-Following Converters Interfacing Renewable Energy Sources in Low Inertia Systems: A Review

IEEE Access
The integration of renewable energy sources (RESs) is a key objective for energy sector decision-makers worldwide, aiming to establish renewable-rich future power grids.
Rafat Aljarrah, Bayan Bany Fawaz, Qusay Salem, Mazaher Karimi, Hesamoddin Marzooghi, Rasoul Azizipanah-Abarghooee   +5 more
doaj   +1 more source

Analysis and Simulation Research of Cascading Faults in AC/DC Hybrid Grid

IEEE Open Access Journal of Power and Energy, 2022
In the development of power systems, the traditional AC power grids are gradually evolving into AC/DC hybrid grids. However, the safety of hybrid grids is threatened by cascading faults, which is a set of chain events caused by a single fault and will ...
Xinzhou Dong, Yunshu Huang, Haozong Wang, Binshu Chen, Hao Wang, Qihuan Dong   +5 more
doaj   +1 more source

Analysis of integration of multi-terminal HVDC network to weak grids

The Journal of Engineering, 2019
In this study, the integration of multi-terminal high voltage direct current (HVDC) systems to weak power grids is analysed under different grid strengths and control methods.
Kamyab Givaki, Md Habibur Rahman, Md Habibur Rahman, Dimitrios Vozikis, Ashkan Giveki   +4 more
doaj   +1 more source

Impedance-Based Criterion Design for Grid-Following/Grid-Forming Switching Control of Wind Generation System

Energies
As wind farms connect with power grids via long-distance transmission lines and multiple transformers, the resulting networks exhibit inherently weak and fluctuating grid strength—subject to dynamic variations from external disturbances like generation ...
Sijia Huang, Zhenbin Zhang, Zhihao Chen, Huimin Huang, Zhen Li   +4 more
doaj   +1 more source

System Strength Beyond Fault Level

IEEE Access
System Strength (SS) is becoming increasingly important while more and more inverter-based resources (IBRs) get connected to weak parts of the grid. There is still, however, a level of ambiguity with respect to formal SS definition.
Mehdi Ghazavi Dozein, Brian Berry, Jovica V. Milanovic, Pierluigi Mancarella   +3 more
doaj   +1 more source

A Weak Node Identification Method for High-PPVG Power Grids Based on a Voltage Sensitivity and Probabilistic Risk Coupling Model

Journal of Applied Science and Engineering
Identifying weak nodes in power grids with a high proportion of photovoltaic generation (PPVG) often faces challenges such as reliance on single one-sided indicators, coupled subjective biases, and insufficient risk quantification.
Wei Yin, Jun Wang, Ming Tong, Zhijun Chen, Ke Zhang, Qian Hu, Meiqing Huang   +6 more
doaj   +1 more source

Interaction Quantification of MTDC Systems Connected with Weak AC Grids

CSEE Journal of Power and Energy Systems
The small-signal stability of multi-terminal high voltage direct current (HVDC) systems has become one of the vital issues in modern power systems. Interactions among voltage source converters (VSCs) have a significant impact on the stability of the ...
Wanning Zheng, Jiabing Hu, Li Chai, Bing Liu, Zixia Sang   +4 more
doaj   +1 more source

Small-Signal Modelling and Stability Assessment of Phase-Locked Loops in Weak Grids

Energies, 2019
This paper proposes a low-complexity small signal model for a 3-leg converter connected to a balanced three-phase, three-wire weak grid and synchronised to this grid using a PLL implemented in a synchronous rotating d-q axis.
Claudio Burgos-Mellado, Alessandro Costabeber, Mark Sumner, Roberto Cárdenas-Dobson, Doris Sáez   +4 more
doaj   +1 more source

Stability assessment of inverter‐based renewable energy sources integrated to weak grids

IET Energy Systems Integration
The worldwide electricity network is undergoing a crucial transformation, shifting from traditional synchronous generators to inverter‐based renewable energy sources (IRESs).
M. I. Saleem, S. Saha, U. Izhar, L. Ang
doaj   +1 more source

Robust μ-Synthesis Grid-Side Control for Inverter-Based Resources in Weak Grids

Energies
With the increasing penetration of inverter-based resources (IBRs), modern power systems are experiencing undesirable dynamics, such as sub-synchronous oscillations in weak grids.
Woo-Jung Kim, Yu-Seok Lee, Yeong-Han Chun   +2 more
doaj   +1 more source