Results 81 to 90 of about 377 (128)

HYBRID HVDC CONVERTERS AND THEIR IMPACT ON POWER SYSTEM DYNAMIC PERFORMANCE

IFAC Proceedings Volumes, 2006
Abstract Hybrid converter HVDC transmission is a new hybrid transmission system for connecting two AC systems. Because it uses different converters, this new configuration offers several advantages over conventional HVDC systems. This paper demonstrates the superior performance of hybrid converter based HVDC transmission systems with respect to ...
B. Qahraman, A.M. Gole, I.T. Fernando
openaire   +3 more sources

Hybrid Commutation Converter in HVDC Systems

Materials Science Forum, 2010
This paper deals with DC – AC static converter systems, of very high voltages and currents, used for electricity power transmission. It has been analyzed three types of converters: with forced commutation, with commutation from load and the solution proposed by the authors. There are shown the advantages in hybrid switching converters, which in essence
Horia Balan, Maria Buzdugan, I. Vadan, E. Simion, P. Karaissas   +4 more
openaire   +1 more source

Power Reversal of Hybrid HVDC System

11th IET International Conference on AC and DC Power Transmission, 2015
Hybrid HVDC combines the advantages of line commutated converter (LCC) and modular multilevel converter (MMC). In this paper the topology and basic control strategy of hybrid HVDC are described. Then the power reversal of hybrid HVDC is analysed. For LCC-HMMC (MMC adopting half bridge sub-module), the sequence of power reversal after stopping operation
null Lujie Yu, null Chengyong Zhao, null Jianzhong Xu, null Xiaobo Hu, null Ning An, null Chunyi Guo   +5 more
openaire   +1 more source

Research on the Protection of Hybrid HVDC System

2018 International Conference on Power Generation Systems and Renewable Energy Technologies (PGSRET), 2018
The traditional and conventional HVDC system has the advantages of lower installing cost and it is a mature state of the art, but it also has some drawbacks like huge reactive power absorption and commutation fault in the system. Similarly, HVDC based on VSC (Voltage Source Converter) is easily operational and flexible in control but it needs high cost
Muhammad Tanveer Riaz, Yang Fan, Jawad Ahmad, Muhammad Zeeshan khan, Muhammad Abbas Khan, Eman Manzoor Ahmed   +5 more
openaire   +1 more source

Hybrid HVDC system for power transmission to island networks

2003 IEEE PES Transmission and Distribution Conference and Exposition (IEEE Cat. No.03CH37495), 2004
A hybrid system, comprising a line commutated thyristor HVDC converter and a STATCOM, is proposed in this paper for the connection of networks with no synchronous generation to a main grid. The proposed system combines the robust performance and low capital cost and power loss of a line-commutated HVDC converter, with the fast dynamic performance of a ...
Andersen, B., Xu, L.
openaire   +3 more sources

Power control method on VSC-HVDC in a hybrid multi-infeed HVDC system

2012 IEEE Power and Energy Society General Meeting, 2012
Multi-infeed HVDC (MIDC) system connected with VSC-HVDC links and LCC-HVDC links is a new structure in modern power systems, which can be called hybrid multi-infeed HVDC (HMIDC) system. The paper presents the voltage stability analysis of a HMIDC system modeled from a possible future Danish power system and proposes a power control method to improve ...
Liu, Yan, Chen, Zhe; id_orcid 0000-0002-2919-4481   +1 more
openaire   +3 more sources

Modeling and simulation analysis of Hybrid Bipolar HVDC system based on LCC-HVDC and VSC-HVDC

2018 IEEE 3rd Advanced Information Technology, Electronic and Automation Control Conference (IAEAC), 2018
In recent years, it's mature that the traditional Line Commutated Converter High Voltage Direct Current (LCC-HVDC) in Chinese power system. As power electronic devices become more and more sophisticated and even perfect in practical engineering applications, Voltage Source Converter based on High Voltage Direct Current (VSC-HVDC) has also been applied ...
Shuping Gao, Hangiian Zhu, Baohui Zhang, Guobing Song   +3 more
openaire   +1 more source

Efficient modeling of hybrid MMCs for HVDC systems

2017 IEEE Energy Conversion Congress and Exposition (ECCE), 2017
Modular multilevel converters (MMCs) have become the most promising converter technologies for medium/high-power applications, specifically for high-voltage direct current (HVDC) transmission systems. For the analysis of the large-scale MMCs-embedded power systems, i.e., multiterminal dc (MTDC) systems and dc grids, modeling and simulation plays an ...
Lei Zhang, Jiangchao Qin, Di Shi, Zhiwei Wang   +3 more
openaire   +1 more source

Hybrid HVDC system for multi-infeed applications

2013 International Conference on Emerging Trends in Communication, Control, Signal Processing and Computing Applications (C2SPCA), 2013
The application of HVDC for stabilizing the large interconnected AC networks are resulting in several HVDC links inverting in the close electrical proximity. These multi-infeed HVDC system inverting into a weak AC network are of serious concern. One of the possible solution for better stability is using a VSC-HVDC as one of the infeed for the multi ...
null Shilpa G, Premila Manohar
openaire   +1 more source

Fullbridge MMC control for hybrid HVDC systems

2017 Brazilian Power Electronics Conference (COBEP), 2017
The Fullbridge based Modular Multilevel Converter (FBMMC) has been widely considered as one of the best solutions for High Voltage Direct Current (HVDC) systems, especially due to its capability of limiting dc short-circuit currents. Generally, the use of FBMMC on hybrid HVDC configurations with Line Commutated Converters (LCC) is considered for ...
Jose R. Lebre, Edson H. Watanabe
openaire   +1 more source