New technologies of voltage source converter (VSC) for HVDC transmission system based on VSC

2008 ◽  
Author(s):  
Guanjun Ding ◽  
Guangfu Tang ◽  
Zhiyuan He ◽  
Ming Ding
Keyword(s):  
New Technologies ◽  
Transmission System ◽  
Voltage Source ◽  
Voltage Source Converter ◽  
Hvdc Transmission

A new voltage source converter-HVDC transmission system based on an inductive filtering method

2011 ◽  
Vol 5 (5) ◽  
pp. 569 ◽  
Author(s):  
Y. Li ◽  
Z.W. Zhang ◽  
C. Rehtanz ◽  
L.F. Luo ◽  
S. Rüberg ◽  
...  
Keyword(s):  
Transmission System ◽  
Voltage Source ◽  
Voltage Source Converter ◽  
Filtering Method ◽  
Hvdc Transmission

Modeling and Fault Analysis of VSC-HVDC Supplying Passive Network

2013 ◽  
Vol 732-733 ◽  
pp. 686-690
Author(s):  
Tian Liang Zhao ◽  
Shi Wu Xiao
Keyword(s):  
Coordinate System ◽  
Pulse Width Modulation ◽  
Fault Simulation ◽  
Transmission System ◽  
Simulation Software ◽  
Fault Analysis ◽  
Voltage Source ◽  
Voltage Source Converter ◽  
Hvdc Transmission ◽  
Passive Network

VSC-HVDC (high voltage direct current based on voltage source converter) is a new HVDC transmission technology based on voltage source converter. Its converter uses thyristors with the current off capability such as IGBT or GTO. VSC-HVDC system can realize passive inverting by pulse width modulation (PWM) technique. This paper introduced the structure and the operating principle of the VSC-HVDC transmission system. In addition, we studied the mathematical model of the VSC-HVDC transmission system supplying passive network in ABC stable coordinate system and in DQ rotating coordinate system. Lastly, we built the physical model of the VSC-HVDC transmission system based on PSCAD/EMTDC simulation software. We carried on various types of fault simulation and analyzed the simulation result. The result of the paper may provide reference in the further study and application of the VSC-HVDC transmission technology in the future.

New Breed of Network Fault-Tolerant Voltage-Source-Converter HVDC Transmission System

2013 ◽  
Vol 28 (1) ◽  
pp. 335-346 ◽  
Author(s):  
Grain Philip Adam ◽  
Khaled H. Ahmed ◽  
Stephen J. Finney ◽  
Keith Bell ◽  
Barry W. Williams
Keyword(s):  
Fault Tolerant ◽  
Transmission System ◽  
Voltage Source ◽  
Voltage Source Converter ◽  
Hvdc Transmission ◽  
Network Fault

Boundary Protection Strategy for the VSC-MTDC under DC Faults

2013 ◽  
Vol 448-453 ◽  
pp. 2030-2035
Author(s):  
Yan Xu ◽  
Di Feng Shi ◽  
Shao Bo Yan
Keyword(s):  
Transmission Lines ◽  
High Frequency ◽  
Renewable Energy Sources ◽  
Transmission System ◽  
Voltage Source ◽  
Voltage Source Converter ◽  
Protection Strategy ◽  
Hvdc Transmission ◽  
Protection Scheme ◽  
Attenuation Characteristics

Multi-terminal HVDC transmission system based on voltage source converter is a promising topology for the integration of the renewable energy sources. The fault characteristics of VSC-MTDC system under DC side faults was analyzed in this paper, as well as the particular requirements for the protection strategy. On the basis of the work metioned above, a four-terminal DC connected transmission system model was built in PSCAD/EMTDC. The boundary protection algorithm was proposed and the wavelet analysis was introduced. The protection scheme for VSC-MTDC transmission lines is based on the attenuation characteristics of line boundary for high frequency transient signals, which constitutes the operation criteria of the boundary protection. The protection scheme puts forward an effective method for the protection selectivity of the VSC-MTDC transmission system.

scholarly journals Novel Control Approach for a Hybrid Grid-Forming HVDC Offshore Transmission System

Energies ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1681 ◽  
Author(s):  
Shangen Tian ◽  
David Campos-Gaona ◽  
Vinícius A. Lacerda ◽  
Raymundo E. Torres-Olguin ◽  
Olimpo Anaya-Lara
Keyword(s):  
Power Flow ◽  
Wind Farms ◽  
Transmission System ◽  
Offshore Wind ◽  
Voltage Source ◽  
Voltage Source Converter ◽  
Offshore Wind Farms ◽  
Control Approach ◽  
Hvdc Transmission ◽  
Hybrid Configuration

This article describes a hybrid topology of high-voltage direct current (HVDC) for offshore wind farms using a series connection of a voltage source converter (VSC) and six-pulse diode rectifier (6P-DR). In this topology, the offshore side VSC (OF-VSC) acts as a grid-forming converter to maintain the PCC (point of common coupling) voltage of offshore wind farms (WF) and frequency. In addition, the OF-VSC functions as an active power filter to suppress the 5th, 7th, 11th, and 13th order harmonic current components produced by the 6P-DR, making it almost sinusoidal. Due to the 6P-DR being used in the hybrid converter, this new configuration reduces the total cost of the converters and losses, while preserving the power flow to the onshore gird. Compared to the fully-rated converter and hybrid converter based on a 12-pulse diode rectifier, the power loss and cost are reduced, and in addition, the proposed hybrid converter does not require a phase shift transformer nor a high number of diodes. A 200 MW in an HVDC transmission system using the hybrid configuration was simulated in PSCAD. The results show that the system operated correctly and the harmonic components were filtered.

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