Results 31 to 40 of about 389 (201)

Current order‐based emergency control strategy for subsequent commutation failure elimination in HVDC

open access: closedInternational Transactions on Electrical Energy Systems, 2021
Chenyi Zheng   +4 more
openaire   +2 more sources

Prevention control method of subsequent commutation failure for LCC‐HVDC under grid fault

open access: closedInternational Transactions on Electrical Energy Systems, 2021
Jinxin Ouyang   +3 more
openaire   +2 more sources

Analysis of VSC-HVDC support capability for power grids with large-scale renewable energy and multi-infeed HVDC links

open access: yesEnergy Reports, 2023
Henan Power Grid is located in the north of Central China Power Grid. During its energy transition, thermal power units will be decommissioned on a large scale.
Pengxiang Xing   +7 more
doaj   +1 more source

DC Current Order Optimization Based Strategy for Recovery Performance Improvement of LCC-HVDC Transmission Systems

open access: yesJournal of Modern Power Systems and Clean Energy, 2023
For the safe and fast recovery of line commutated converter based high-voltage direct current (LCC-HVDC) transmission systems after faults, a DC current order optimization based strategy is proposed.
Renlong Zhu   +5 more
doaj   +1 more source

Study on coordinated multi-objective reactive control system of AC/DC power grid based on new-generation synchronous condenser

open access: yesEnergy Reports, 2023
With rapid development of HVDC transmission system, the coupling relationship between the AC and DC power grid has become increasingly stronger. Especially, the problem of voltage instability is prominent in HVDC receiving-end system, the dynamic ...
Fan Xiao   +5 more
doaj   +1 more source

Adaptive VDCOL control strategy for the recovery of the UHVDC SPC system

open access: yesThe Journal of Engineering, 2019
The separating pole connection (SPC) mode of ultra-high-voltage direct current (UHVDC) can significantly improve the power stability, but when the AC bus of one pole is failed and two receiving systems are near, it may cause subsequent commutation ...
Shujun Yao   +3 more
doaj   +1 more source

Review of Research on Voltage Dependent Current Order Limiter for Commutation Failure Mitigation [PDF]

open access: yesDianli jianshe
[Objective] The objective of this study is to systematically sort out the research status of the voltage dependent current order limiter(VDCOL)improvement method to enhance the ability of VDCOL control to commutation failure in high-voltage direct ...
ZHU Xuan, TANG Yi, ZHENG Chenyi, WANG Ying, DANG Jie, CUI Ting
doaj   +1 more source

The HVDC commutation failure mechanism impacted by harmonics and its suppression method

open access: yesFrontiers in Energy Research
Harmonics are an important cause of voltage distortion, and voltage reduction and voltage distortion are the main causes of commutation failure. But most of the current research studies on commutation failure are based on the drop in fundamental voltage ...
Guojiang Zhang   +4 more
doaj   +1 more source

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