Results 141 to 150 of about 529 (183)

A Control Strategy of a VSC HVDC System for Power System Enhancement

2009 Second International Conference on Emerging Trends in Engineering & Technology, 2009
Voltage Source Converter (VSC) based HVDC is the most recent HVDC technology with extruded DC cables in small and medium power transmission. VSC-HVDC converters include Insulated Gate Bipolar Transistors (IGBT'S) and operated with high frequency Pulse Width Modulation (PWM) in order to get high speed control of both active and reactive power[1][2 ...
Sonali Dasgupta, Gayatri Agnihotri
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Fault Current Limiters for VSC-HVDC systems

10th IET International Conference on AC and DC Power Transmission (ACDC 2012), 2012
Fault Current Limiters (FCL) limit fault current levels to a more manageable level, this way it becomes possible to increase the transmission ratings of an electrical system, without changing the equipment. Thus, the existing equipment is able to handle the new currents and protect properly the system.
D.M. Larruskain, I. Zamora, O. Abarrategui   +2 more
openaire   +1 more source

Research on dynamic characteristics of VSC-HVDC system

2006 IEEE Power Engineering Society General Meeting, 2006
VSC-HVDC technology based on voltage source converter (VSC) and isolated gate bipolar transistor is a kind of novel HVDC technology for low power and long distance with flexible control and operation modes. In this paper, the dynamic mathematic model of VSC-HVDC with SPWM control is founded based on analyzing the fundamental principle of VSC-HVDC ...
null Guangkai Li, null Gengyin Li, null Haifeng Liang, null Chengyong Zhao, null Ming Yin   +4 more
openaire   +1 more source

Overview on VSC-HVDC Systems Based on PV

2018 IEEE International Power Electronics and Application Conference and Exposition (PEAC), 2018
As a result of the rapid development of DC charging and the extensive use of electronic devices, the number of DC loads has increased dramatically. Loads have the characteristics of AC and DC coexist. At the same time, there are many distributed power sources in microgrids, such as PV, wind power generation, and so on.
Jinghua Zhou, Jiewei Wu
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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
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DC Fault Characteristics of the VSC-HVDC System

2020
In the dc system, the two-level VSC is widely applied, in which the typical dc fault types mainly include the pole-to-pole fault and pole-to-ground fault.
Bin Li, Jiawei He
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A review of the performance of VSC-HVDC and MTDC systems

2017 IEEE PES PowerAfrica, 2017
For decades, high voltage alternating current (HVAC) has been the more conventional method of power delivery. With recent advances in power electronics, high voltage direct current (HVDC) is an established technology in long-distance bulk power transmission.
Nsofwa M. Kangwa, Chitra Venugopal, Innocent E. Davidson   +2 more
openaire   +1 more source

Integration of wind farm to VSC-HVDC system

2017 International Conference on Smart grids, Power and Advanced Control Engineering (ICSPACE), 2017
Renewable energy resources are playing an important role in reducing the energy crisis. One of the important resources is being wind energy systems. Most of the times, offshore wind power is transferred to the main land grid through VSC-HVDC transmission system due to its advantages.
Subin Jose, R. S. Geetha
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The Research on the VSC-HVDC Control System Structure

2012 Asia-Pacific Power and Energy Engineering Conference, 2012
the control system of the VSC-HVDC is one of the most important ports of the Flexible HVDC. Most researchers are mainly focus on the design of controllers and the control methods of VSC-HVDC and pay less attention on the control system structure of VSC-HVDC.
Zhaoqiang Yuan, Hairong Wang
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Evaluation of losses in VSC-HVDC transmission system

2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century, 2008
The paper describes methods to determine the operating losses of every component in VSC-HVDC transmission system. Converter valves, converter transformer, converter reactors and the others devices are considered. The procedure for loss evaluation is presented and measures to reducing the losses are presented. The difference and similarity of evaluation
null Hui Pang, null Guangfu Tang, null Zhiyuan He   +2 more
openaire   +1 more source