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.

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

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 The Possibility of Enhanced Power Transfer in a Multi-Terminal Power System through Simultaneous AC–DC Power Transmission

Electronics ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 108
Author(s):  
Shaista Parveen ◽  
Salman Hameed ◽  
Hafizur Rahman ◽  
Khaliqur Rahman ◽  
Mohd Tariq ◽  
...  
Keyword(s):  
Power System ◽  
Power Transmission ◽  
Transmission System ◽  
Simulation Software ◽  
Voltage Source ◽  
Voltage Source Converter ◽  
Transmission Network ◽  
Power Transfer ◽  
Dc Power ◽  
Dc Power Transmission

The feasibility of power transfer enhancement, through simultaneous AC–DC power transmission in a two-terminal transmission network, has been proposed earlier by the authors, and the concept is well established. To meet the increase in demand for electricity, a new technique is proposed in this article to increase the use of existing transmission lines in addition to independent control of AC and DC power flow. This paper extends the concept to a three-terminal transmission network by considering a power tapping from the middle of the line. DC is also superimposed in the already existing three-terminal AC transmission system. In the proposed topology, a multi-terminal simultaneous AC–DC system is used, which is integrated with a zig-zag transformer and more than two voltage source converter (VSC) stations. Each terminal may represent an area of the power system. Anyone/two-terminal(s) may act as sending end, whereas the remaining two/one terminal(s) may act as receiving end. Power can flow in either direction through each segment of the transmission system. At sending end, VSC converts a part of AC to DC and injects it into the neutral of the zig-zag transformer. On receiving terminal, DC power is tapped from neutral of zig-zag transformer and fed to VSC for conversion back to AC. The concept is verified in the digital simulation software PSCAD/EMTDC.

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