Results 1 to 10 of about 13,502 (140)

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   +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
CONG Xinpeng, ZHENG Xiaodong, CAO Yaqian, TAI Nengling, MIAO Yuancheng, LI Ke
doaj   +2 more sources

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   +2 more sources

A current deviation control parameter tuning method to suppress subsequent commutation failure

电力工程技术
If a subsequent commutation failure occurs in the line commutated converter-based high voltage direct current (LCC-HVDC) transmission system, it will have a seriously negative impact on the safe and stable operation of the AC-DC hybrid power grid. Aiming
LI Juan, ZHU Longzhen, ZU Lifeng, WANG Xianwei, YANG Meijuan   +4 more
doaj   +2 more sources

A Dynamic Nonlinear VDCOL Control Strategy Based on the Taylor Expansion of DC Voltages for Suppressing the Subsequent Commutation Failure in HVDC Transmission

Energies, 2023
Subsequent commutation failure in high-voltage DC transmission systems seriously emphasizes the safe and stable operation of power systems. Via analyzing the mechanism of commutation failure and the principle of voltage-dependent current order limiter ...
Hongzheng Li, Kunlun Han, Shuhao Liu, Hailin Chen, Xiongfeng Zhang, Kangtai Zou   +5 more
doaj   +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

Establishment of safety power range and subsequent commutation failure suppression strategy for hybrid cascaded HVDC system

International Journal of Electrical Power & Energy Systems
The hybrid cascaded high-voltage direct current (HC-HVDC) system integrates the benefits of both LCC and MMC technologies. However, the inverter LCC is prone to suffer subsequent commutation failure (SCF) when an AC fault occurs. Therefore, a coordinated
He Wang, Jiazhi Guo, Jing Bian, Guoqing Li, Tuo Wang   +4 more
doaj   +2 more sources

Research on Dynamic Reactive Power Compensation Scheme for Inhibiting Subsequent Commutation Failure of MIDC [PDF]

Sustainability, 2021
Commutation failure at the inverter side of an MIDC (multi-infeed HVDC) is usually caused by AC system faults. Suppose the converter bus voltage cannot recover to the normal operation level in time: in that case, the commutation failure will then develop into more severe subsequent commutation failures or even DC blocking, which will severely threaten ...
Yifan Zhang, Fei Tang, Fanghua Qin, Yu Li, Xin Gao, Nianchun Du   +5 more
openaire   +1 more source

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

Energy 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, Youhang Yang, Jiasheng Peng, Linlin Yu, Ruihua Si, Peng Jia, Chuanjie Wang, Yunfeng Wen   +7 more
doaj   +1 more source

Improved Identification Method and Fault Current Limiting Strategy for Commutation Failure in LCC-HVDC

Journal of Modern Power Systems and Clean Energy, 2022
Line-commutated converter based high-voltage direct-current (LCC-HVDC) transmission systems are prone to subsequent commutation failure (SCF), which consequently leads to the forced blocking of HVDC links, affecting the operation of the power system.
Jian Liu, Sheng Lin, Wenliang Zhong, Lei Liu   +3 more
doaj   +1 more source