Results 21 to 30 of about 1,303 (282)

Multi-DC commutation safety and system stability coordination control evaluation method [PDF]

MATEC Web of Conferences
Due to the influence of multiple DC commutation failure after AC failure and stable interaction of system frequency, voltage and power Angle, the operation control of power grid is greatly difficult.
Zhang Hongli, Huang Xifang, Xu Guang
doaj   +3 more sources

Strategy for Suppressing Commutation Failures in High-Voltage Direct Current Inverter Station Based on Transient Overvoltage

Energies
Commutation failures in high-voltage direct current (HVDC) transmission systems often occur within inverter stations, posing challenges to the safe and consistent operation of HVDC transmission projects.
Dandan Zhao, Shaoyin He, Hua Huang, Zheng Han, Lv Cui, Yuxin Li   +5 more
doaj   +2 more sources

A Suppression Strategy for Subsequent Commutation Failures Considering Commutation Capability of Recovery Process

Shanghai Jiaotong Daxue xuebao, 2022
In order to suppress subsequent commutation failures of high voltage direct current (HVDC), the dynamic process of electrical and control quantities during system recovery is studied, and the main reason for subsequent commutation failures is proposed in the paper.
CONG Xinpeng, ZHENG Xiaodong, CAO Yaqian, TAI Nengling, MIAO Yuancheng, LI Ke
openaire   +3 more sources

Modeling of Efficient Control Strategies for LCC-HVDC Systems: A Case Study of Matiari-Lahore HVDC Power Transmission Line. [PDF]

Sensors (Basel), 2022
With the recent development in power electronic devices, HVDC (High Voltage Direct Current) systems have been recognized as the most prominent solution to transmit electric power economically. Today, several HVDC projects have been implemented physically.
Ahmed A, Khan D, Khan AM, Mustafa MU, Panjwani MK, Hanan M, Agyekum EB, Uhunamure SE, Edokpayi JN.   +8 more
europepmc   +2 more sources

Subsequent commutation failure suppression strategy of hybrid cascaded HVDC system based on coordinated control of CEC and VDCOL

IET Energy Systems Integration
The inverter side of hybrid cascaded HVDC adopts the structure of Modular Multilevel Converter (MMC) in series with Line Commutated Converter (LCC). The complete system amalgamates the advantages of LCC with MMC, but it also makes the interaction process
He Wang, Daqian Zhang, Jing Bian, Jiazhi Guo, Shiqiang Li   +4 more
doaj   +2 more sources

Adaptive firing angle compensation control for mitigating DC subsequent commutation failure

电力工程技术, 2022
Subsequent commutation failure of the high voltage direct current (HVDC) transmission system has a seriously negative impact on the stable operation of the AC-DC hybrid power grid.
YANG Chengxiang, YAO Wei, ZHOU Hongyu, LI Peiping, LI Chenghao, WEN Jinyu   +5 more
doaj   +1 more source

Suppression strategy for subsequent commutation failure of DC system based on improved VDCOL

电力工程技术, 2022
Aiming at the problem of subsequent commutation failure during the fault recovery period after the first commutation failure of high voltage direct current system,the recovery process is divided into the first commutation failure (stage 1),the beginning ...
CHEN Ruikang, LI Fengting, YIN Chunya, LIU Jiangshan   +3 more
doaj   +1 more source

Research on Battery Energy Storage STATCOM Suppressing HVDC Commutation Failure

Frontiers in Energy Research, 2022
Due to the poor performance of traditional STATCOM in DC engineering, a compensation method using battery energy storage STATCOM (STATCOM/BESS) to suppress commutation failure of the weak receiving-end high voltage direct current transmission system is ...
Chao Xing, Junhao Chen, Junhao Chen, Zhi Xu, Xinze Xi, Xin He, Shilong Chen   +6 more
doaj   +1 more source

A coordination control strategy to suppress commutation failure based on LCC-VSC

Energy Reports, 2021
The receiving end hybrid LCC-VSC system is a new type of hybrid DC transmission system. In order to suppress continuous commutation failure, this paper optimizes and improves the firing angle control strategy of LCC with AC fault voltage and the DC power
Jiaqi Liu, Guosheng Yang, Zhengguang Chen   +2 more
doaj   +1 more source

A controllable thyristor-based commutation failure inhibitor for LCC-HVDC transmission systems [PDF]

, 2021
Commutation failure is a serious malfunction in line-commutated high voltage direct current (HVdc) converters which is mainly caused by the inverter ac faults, and results in a temporary interruption of transmitted power and damage to the converter ...
Mat Said, Dalila, He, Jinghan, Tzelepis, Dimitrios, Booth, Campbell, Mirsaeidi, Sohrab, Dong, Xinzhou   +5 more
core   +1 more source