Results 31 to 40 of about 309 (168)

INJECTION POWER UPFC MODEL FOR INCORPORATION OF UNIFIED POWER FLOW CONTROLLER IN LOAD FLOW STUDIES [PDF]

JES. Journal of Engineering Sciences, 2007
This paper is devoted to the incorporation of the s teady-state model of the unified power flow controller (UPFC) in power flow programs using a UPFC injection model. The adopted UPFC injection mo del is based on the representation of UPFC in steady-state conditio ns by two voltage sources in series with certain reactances.
A. Ahmed, M. Z. EL-Sadek, M. Abo-Zahhad, H.E. Zidan   +3 more
openaire   +1 more source

Multi‐Input Backstepping Control for Transient Stability Enhancement in Power Systems With PMSG‐Based Wind Turbines and UPFC

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
In the paper, first, the modelling of a power system with a Permanent Magnet Synchronous Generator (PMSG), Unified Power Flow Controller (UPFC) and Doubly‐Fed Induction Generator (DFIG) is fully considered. Next, the possible candidate control law and its implementation technique on the power network are examined.
Mohsen Zamani Boroujeni, Saeed Abazari, Said Hoghoughi, Abbas Kargar   +3 more
wiley   +1 more source

Metaheuristic‐Based Load Frequency Control of Multi‐Source Renewable Systems With SMES and AC‐DC Parallel Tie‐Lines

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
This study proposes a hybrid evolutionary exploration algorithm (HEEA) that integrates genetic algorithm and grey wolf optimiser to co‐tune PID controller gains and SMES parameters in a two‐area AC‐DC interconnected renewable system. The proposed method achieves faster convergence, lower ITAE and improved stability compared to existing metaheuristics ...
Md. Shahan Sarker
wiley   +1 more source

Classification of Short‐Circuit Faults in High‐Voltage Transmission Lines Using Energy‐Based and Statistical Indices Extracted From Hilbert and Wavelet Transforms of Three‐Phase Terminal Voltage and Current Signals

IET Generation, Transmission &Distribution, Volume 20, Issue 1, January/December 2026.
Classification of short circuit faults in high voltage transmission lines using energy based and statistical indices extracted from hilbert and wavelet transforms of three phase terminal voltage and current signals. ABSTRACT Accurate classification of short‐circuit faults in high‐voltage transmission lines, including identification of the faulted phase(
Mohammad Sarikhani, Ali Asghar Ghadimi, Mahyar Abasi   +2 more
wiley   +1 more source

Comprehensive Power Flow Analyses and Novel Feedforward Coordination Control Strategy for MMC-Based UPFC

Energies, 2019
This paper aims to discover the general steady-state operation characteristics, as well as improving the dynamic performance, of the modular multilevel converter (MMC)-based unified power flow controller (UPFC).
Jinlian Liu, Zheng Xu, Liang Xiao
doaj   +1 more source

Evaluation of optimal UPFC allocation for improving transmission capacity

Global Energy Interconnection, 2020
A unified power flow controller (UPFC) combines the advantages of various flexible alternating current transmission system (FACTS) devices into a powerful format.
Xuhui Shen, Hongmei Luo, Wenman Gao, Yuyao Feng, Nan Feng   +4 more
doaj   +1 more source

Overvoltage Suppression Strategy for HPFC Based on Bandwidth Adaptive LADRC and Improved Reactive Power Control

IET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.
Overvoltage occurs in Hybrid Power Flow Controllers (HPFC) under specific fault conditions. This paper proposes a linear Active Disturbance Rejection (LADRC) strategy integrating reactive power adaptive regulation and bandwidth parameter adaptive adjustment to suppress whole‐process overvoltage in HPFC.
Jianhui Meng, Xincheng Yuan, Peng Wu, Penghui Zhao, Yan Xu, Dajiang Wang   +5 more
wiley   +1 more source

Enhancing Oscillation Damping in an Interconnected Power System with Integrated Wind Farms Using Unified Power Flow Controller

Energies, 2019
The well-developed unified power flow controller (UPFC) has demonstrated its capability in providing voltage support and improving power system stability. The objective of this paper is to demonstrate the capability of the UPFC in mitigating oscillations
Ping He, Seyed Ali Arefifar, Congshan Li, Fushuan Wen, Yuqi Ji, Yukun Tao   +5 more
doaj   +1 more source

Performance Enhancement of Grid-Connected Renewable Energy Systems Using UPFC

Energies, 2023
No one denies the importance of renewable energy sources in modern power systems in terms of sustainability and environmental conservation. However, due to their reliance on environmental change, they are unreliable systems.
M. Osama abed el-Raouf, Soad A. A. Mageed, M. M. Salama, Mohamed I. Mosaad, H. A. AbdelHadi   +4 more
doaj   +1 more source

Frequency‐Constrained Dynamic Microgrid Formation Using Distributed Energy Resources and Soft Open Points for Resilient Distribution System

IET Renewable Power Generation, Volume 20, Issue 1, January/December 2026.
This paper proposes a frequency‐constrained dynamic microgrid formation for resilient distribution system restoration under extreme events. By co‐optimising distributed energy resources dispatch, switching actions and soft open point control, the model ensures secure black‐start operation while satisfying frequency stability constraints including RoCoF,
Siming Li, Tao Yu, Yushen Gong, Wencong Xiao   +3 more
wiley   +1 more source