Results 221 to 230 of about 47,764 (268)

Small-Signal Stability Enhancement Approach for VSC-HVDC System Under Weak AC Grid Conditions Based on Single-Input Single-Output Transfer Function Model

IEEE Transactions on Power Delivery, 2021
The voltage source converter (VSC) system has stability issue under weak AC grid conditions. In this paper, the multi-input multi-output (MIMO) transfer function model of VSC system in frequency-domain is derived.
Chunyi Guo, Shuo Yang, Wei Liu, Chengyong Zhao, Jingxuan Hu   +4 more
semanticscholar   +1 more source

Performance analysis of paralleled VSC-HVDC systems

2016 International Conference on Microelectronics, Computing and Communications (MicroCom), 2016
This paper presents a detailed study of the VSC-HVDC system along with the related cases of paralleling two similar VSC-HVDC systems. A basic VSC-HVDC system is designed with controllers on either side of the system. The system is further expanded by connecting a similar VSC-HVDC system in parallel for enhancing the reliability.
Pruthvi. Y. Kalari, R. S. Geetha
openaire   +1 more source

DC line protection for VSC-HVDC system

2012 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), 2012
Voltage source converters based HVDC (VSC-HVDC) systems involving overhead transmission lines are prone to severe over-currents and over-voltages during dc line faults. This necessitates the operation of the system with some kind of protective devices to overcome the effects of dc line faults.
Wajid Ahmed, Premila Manohar
openaire   +1 more source

A traveling-wave-based protection scheme for the bipolar voltage source converter based high voltage direct current (VSC-HVDC) transmission lines in renewable energy integration

, 2021
— The voltage source converter based high voltage direct current (VSC-HVDC) technology is a feasible solution to realize wide-area complementarity and flexible consumption of the renewable clean energy resources but DC line faults are crucial problems ...
Yuhan Zhang, Shunliang Wang, Tianqi Liu, Shenmin Zhang, Qi Lu   +4 more
semanticscholar   +1 more source

A strategy for access points selection and capacity configuration for the VSC-HVDC system considering overload scenarios alleviation

, 2021
Appropriate access points of the voltage source converter-based high voltage direct current (VSC-HVDC) system are very important for better utilization of controllability provided by the integration of VSC-HVDC systems into AC grids.
Yang Zhou, C. Rehtanz, Stefan Dalhues, Pei Luo, Jiayan Liu, Yong Li, Hongtian Chen   +6 more
semanticscholar   +1 more source

Design and simulation of VSC-HVDC controller

2011 International Conference on Electrical and Control Engineering, 2011
VSC-HVDC composed by full-controlled converter units is more flexible transmission schemes compared with traditional HVDC. It is necessary to study its control mode. This paper first analyzes the steady-state model of VSC-HVDC, then obtains the relationship among modulation wave phase δ, modulation degree m, active power and reactive power.
Gelan Zhu, Shouyun Zhao
openaire   +1 more source

A Novel Integrated Protection for VSC-HVDC Transmission Line Based on Current Limiting Reactor Power

IEEE Transactions on Power Delivery, 2020
In this paper, a novel integrated protection for VSC-HVDC transmission line is proposed. The protection scheme includes a main protection and a backup protection.
Shilong Li, Wei Chen, Xianggen Yin, Deshu Chen, Yufei Teng   +4 more
semanticscholar   +1 more source

Genetic algorithm based control for VSC HVDC

2005 IEEE/PES Transmission & Distribution Conference & Exposition: Asia and Pacific, 2005
VSC HVDC has a wide application prospect and it has many merits in contrast to conventional HVDC. The models of AC/DC hybrid power system with VSC HVDC are established in this paper. Utilizing the fast power flow adjustment ability of VSC HVDC, a novel control strategy stabilizing AC and DC system synthetically is proposed.
null Hu Zhaoqing, null Mao Chengxiong, null Lu Jiming, null Chen Man   +3 more
openaire   +1 more source

Over-Voltage Suppression Methods for the MMC-VSC-HVDC Wind Farm Integration System

IEEE Transactions on Circuits and Systems - II - Express Briefs, 2020
In this brief, we study the cascading failure mitigation methods in the system where the remote large-scale wind farm is integrated to the bulk ac power system through high-voltage direct current (HVDC) transmission based on voltage source converter (VSC)
Yingbiao Li, Jianbo Guo, Xi Zhang, Shanshan Wang, Shicong Ma, Bing Zhao, Guanglu Wu, Tiezhu Wang   +7 more
semanticscholar   +1 more source

Multi-level voltage reinjection VSC HVDC transmission

8th IEE International Conference on AC and DC Power Transmission (ACDC 2006), 2006
The structure and control of a new voltage source based HVDC transmission link are described. The link uses multi-level voltage reinjection converters. It offers some advantages over PWM-VSC transmission in terms of switching efficiency and valve ratings, while providing similar levels of voltage and current waveform quality.
openaire   +1 more source