Results 61 to 70 of about 308 (120)

Applicability analysis of travelling wave protection for the hybrid HVDC system

The Journal of Engineering, 2019
The hybrid high-voltage direct current (HVDC) system, in which the rectifier is made up of the line commutated converter (LCC) and the inverter is composed of the modular multilevel converter (MMC), has quite different fault characteristics from the ...
Shaojie Cheng, Yanting Wang, Baohui Zhang, Hongyue Ma   +3 more
doaj   +1 more source

Single-ended Protection Principle of LCC- VSC Three-terminal DC System Based on Gini Impurity

CSEE Journal of Power and Energy Systems
Due to the advantages of LCC-VSC (line-commutated converter-voltage source converter) three-terminal DC technology in terms of new energy consumption, long-distance transmission, reliability and economy, China has successively constructed a number of ...
Dahai Zhang, Chuanjian Wu, Jinghan He, Guomin Luo   +3 more
doaj   +1 more source

Transient Voltage Support Strategy of Grid-Forming Medium Voltage Photovoltaic Converter in the LCC-HVDC System

CSEE Journal of Power and Energy Systems
The participation of photovoltaic (PV) plants in supporting the transient voltage caused by commutation failure in the line-commutated-converter-based high voltage direct current (LCC-HVDC) system is of great significance, as it can enhance the DC ...
Hong Lu, Xianyong Xiao, Guangfu Tang, Zhiyuan He, Zhiguang Lin, Chong Gao, Zixuan Zheng   +6 more
doaj   +1 more source

Double-Ended Fast Protection System Independent of LCC-VSC-MTDC in Boundary Components

CSEE Journal of Power and Energy Systems
Hybrid DC transmission technology is used in new energy transmission due to its advantages of large capacity and long distances. Line-commutated converter-voltage source converter-multi-terminal DC (LCC-VSC-MTDC) is one of the more important development ...
Dahai Zhang, Chuanjian Wu, Pinghao Ni, Jinghan He   +3 more
doaj   +1 more source

Multi-Degree-of-Freedom Control Framework for HVDC Transmission Converters

CSEE Journal of Power and Energy Systems
This paper systematically investigates the multi-degree-of-freedom (multi-DoF) control framework of high voltage direct current (HVDC) converters based on their topological characteristics and control requirements.
Haobo Zhang, Jinyu Wen, Wang Xiang, Weixing Lin, Meng Zhou, Wenping Zuo, Shijie Cheng   +6 more
doaj   +1 more source

Review of the Configuration and Transient Stability of Large-Scale Renewable Energy Generation Through Hybrid DC Transmission

CES Transactions on Electrical Machines and Systems
Based on the complementary advantages of Line Commutated Converter (LCC) and Modular Multilevel Converter (MMC) in power grid applications, there are two types of hybrid DC system topologies: one is the parallel connection of LCC converter stations and ...
Xinshou Tian, Yongning Chi, Longxue Li, Hongzhi Liu   +3 more
doaj   +1 more source

An Abnormal Increase in Switching Frequency in Multi-Sources Line Commutated Converter and Suppression Method

Energies
Distinct from the traditional Modular Multilevel Converter (MMC) which focuses on fundamental frequency operation, the Static Var and Filter (SVF) within the Multi-Source Line-Commutated Converter (SLCC) system is tasked with the core function of high ...
Xintong Mao, Xianmeng Zhang, Jian Ling, Honglin Yan, Rui Jing, Zhihan Liu, Chuyang Wang   +6 more
doaj   +1 more source

A Novel Sub-Module-Based Line-Commutated Converter That Is Actively Resistant to Commutation Failure

Actuators
To improve the ability of line-commutated converters (LCCs) to resist commutation failure (CF) when a fault occurs on the AC side, a novel sub-module-based LCC topology actively resistant to CF is proposed in this paper. The control strategy and the parameters of the proposed sub-module are elaborately designed.
Hongchun Shu, Junjie Zhang, Yaoxi Jiang
openaire   +1 more source

System adaptive AC filter for a line commutated converter high voltage DC transmission system

CSEE Journal of Power and Energy Systems, 2020
Xinyang Liu, Weimin Ma, Hongjie Jia, Chaoyu Dong   +3 more
doaj   +1 more source

Compound Line-Commutated Converter with Commutation Voltage Compensation and Power Consumption Capability for Commutation Failure Suppression

CSEE Journal of Power and Energy Systems
openaire   +1 more source