Results 81 to 90 of about 1,639 (185)
IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.This paper first derives an analytical expression for the transient overvoltage (TOV) magnitude at critical nodes in the system caused by DC blocking (DCB) faults. Subsequently, an analytical formula is developed to characterize the relationship between the multiple renewable energy stations short circuit ratio (MRSCR) and the transient voltage rise ...
Guangyao Wang +6 more
wiley +1 more source
Simulation-based Optimisation of LCC-HVDC Controller Parameters using Surrogate Model Solvers [PDF]
2019 20th Workshop on Control and Modeling for Power Electronics (COMPEL), 2019 This paper proposes the use of surrogate model optimisation methods to solve box constrained LCC-HVDC controller tuning problems. The tuning problem is the selection of the proportional-integral controller gains and voltage-dependant current order limiter parameters of an LCC-HVDC link subject to two operational scenarios and a set of large-signal ...
Leavy, Aaron S. C. +3 more
openaire +1 more source
Impact of high level of renewable energy penetration on inter-area oscillation [PDF]
, 2011 Many research projects have been focused on the impacts of each type of wind turbines on the stability of the power system. Due to the rapid increase in the penetration level of renewable energy and diverse power generation portfolios, it is vital to ...
Eghbal, Mehdi +2 more
core
Operation analysis of thyristor based front-to-front active-forced-commutated bridge DC transformer in LCC and VSC hybrid HVDC networks [PDF]
, 2017 The active-forced-commutated (AFC) bridge employs a symmetrical thyristor-bridge with auxiliary self-commutated full-bridge chain-link (FB-CL) circuit to assist its soft transition and forced commutation.
Adam, Grain P. +3 more
core +2 more sources
IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.In order to address the limitations of conventional strategies, this paper proposes a staged reactive power control strategy that employs a combined criterion based on the magnitude of the AC voltage dip and the extinction angle. The proposed strategy enables dynamic adjustment of reactive power during severe AC voltage dips, thereby ensuring voltage ...
Xianbo Ke, Jun Liu
wiley +1 more source
Energies, 2017 High-voltage direct current (HVDC) lines with line-commutated converter (LCC) are being increasingly employed to transmit bulk wind power over long distance.
Benfeng Gao +4 more
doaj +1 more source
Full-bridge modular multilevel converter (FB-MMC) with extended control range [PDF]
, 2015 This paper presents an attractive control scheme that decouples cell capacitor voltage regulation of the FB-MMC from the dc link voltage regulation. This is achieved by manipulating both ac and dc components of modulation functions.
Adam, Grain Philip +4 more
core +1 more source
Research on Vibration and Noise of Converter Transformer Based on LCL Converter
IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.The paper outlines the topology of the new LCL converter. Through theoretical analysis and experimental verification, it has been confirmed that the proposed LCL converter not only effectively sup‐presses harmonics but also significantly reduces the vibration and noise of the converter transformers.
Liang Zhao +5 more
wiley +1 more source
Thyristor based modular multilevel converter with active full-bridge chain-link for forced commutation [PDF]
, 2016 Voltage source converter (VSC) such as modular multilevel converter (MMC) has been intensively studied for high voltage direct current (HVDC) applications due to its flexible terminal voltage adjustment, compatibility with weak ac grid and independent ...
Finney, Stephen +2 more
core +1 more source
IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.This paper presents an integrated control strategy for enhancing fault ride‐through in CLCC‐HVDC systems. By combining adaptive current deviation control with an improved voltage‐dependent current order limitation strategy, the method leverages CLCC's controllable commutation capabilities to sustain operation and expedite recovery during fault events ...
Menghao Wen +5 more
wiley +1 more source