Impact of DFT-Based phasor estimation errors due to commutation failures of LCC-HVDC links on the protection of AC lines in the near vicinity
Sign Up to like & getrecommendations! Published in 2021 at "Electric Power Systems Research"
DOI: 10.1016/j.epsr.2021.107287
Abstract: Abstract Commutation failure (CF) is an inherent issue for Line-Commutated Converter (LCC) HVDC technology. Whenever it happens, voltage and current waveforms throughout the AC system in the near vicinity of LCC-HVDC links become quite distorted.… read more here.
Keywords: protection; near vicinity; phasor estimation; hvdc links ... See more keywords
Comparison of UPFC, SVC and STATCOM in Improving Commutation Failure Immunity of LCC-HVDC Systems
Sign Up to like & getrecommendations! Published in 2020 at "IEEE Access"
DOI: 10.1109/access.2020.3011113
Abstract: This paper compares the performance of unified power flow controllers (UPFCs), static var compensators (SVCs), and static compensators (STATCOMs) in commutation failure immunity (CFI) improvement of line-commutated converter-based high-voltage direct-current transmission (LCC-HVDC) systems. Theoretical analysis… read more here.
Keywords: commutation failure; hvdc systems; lcc hvdc; failure immunity ... See more keywords
Small-Signal Modeling and Interaction Analysis of LCC-HVDC Systems Based on Harmonic State Space Theory
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Access"
DOI: 10.1109/access.2022.3213709
Abstract: High-voltage direct current (HVDC) technology based on Line Commutated Converter (LCC) is widely used in modern power systems due to its numerous benefits. However, as a typical power electronic device, LCC-HVDC has caused significant changes… read more here.
Keywords: system; hvdc; power; among sending ... See more keywords
Impedance Modeling and Stability Analysis of DFIG Wind Farm With LCC-HVDC Transmission
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Journal on Emerging and Selected Topics in Circuits and Systems"
DOI: 10.1109/jetcas.2022.3144999
Abstract: In China, the high-penetrated doubly-fed induction generators (DFIG) wind turbine (WT) is undergoing the centralized collection and long-distance line-commutated converter (LCC) high voltage DC (HVDC) transmission. In such high-penetrated renewable generation and transmission system, the… read more here.
Keywords: hvdc; transmission; lcc; wind farm ... See more keywords
The Subsynchronous Oscillations Caused by an LCC HVDC Line in a Power System Under the Condition of Near Strong Modal Resonance
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Power Delivery"
DOI: 10.1109/tpwrd.2018.2864201
Abstract: This paper derives a multi-input multi-output closed-loop model of a power system with an LCC HVDC line. The derived model is comprised of the HVDC subsystem and the subsystem of rest of power system (ROPS).… read more here.
Keywords: hvdc line; lcc hvdc; power; power system ... See more keywords
Series Capacitor Compensated AC Filterless Flexible LCC HVDC With Enhanced Power Transfer Under Unbalanced Faults
Sign Up to like & getrecommendations! Published in 2019 at "IEEE Transactions on Power Systems"
DOI: 10.1109/tpwrs.2019.2899065
Abstract: This paper introduces significant performance enhancements to the ac filterless LCC HVDC by including fixed series capacitors at the primary side of a converter transformer. In terms of technical performance, 1) the amount of active… read more here.
Keywords: capacitor; power; series; lcc hvdc ... See more keywords
A Quantitative Index to Evaluate the Commutation Failure Probability of LCC-HVDC with a Synchronous Condenser
Sign Up to like & getrecommendations! Published in 2019 at "Applied Sciences"
DOI: 10.3390/app9050925
Abstract: Since thyristor cannot turn off automatically, line commutated converter based high voltage direct current (LCC-HVDC) will inevitably fail to commutate and therefore auxiliary controls or voltage control devices are needed to improve the commutation failure… read more here.
Keywords: index; commutation failure; commutation; lcc hvdc ... See more keywords
Subsynchronous Torsional Interaction of Wind Farms with FSIG Wind Turbines Connected to LCC-HVDC Lines
Sign Up to like & getrecommendations! Published in 2017 at "Energies"
DOI: 10.3390/en10091435
Abstract: High-voltage direct current (HVDC) lines with line-commutated converter (LCC) are being increasingly employed to transmit bulk wind power over long distance. However, this may cause the sub-synchronous torsional interaction (SSTI) between the wind farms and… read more here.
Keywords: wind; lcc hvdc; hvdc; wind farms ... See more keywords