Results 171 to 180 of about 17,198,062 (208)
Some of the next articles are maybe not open access.
Integration of wind farm to VSC-HVDC system
2017 International Conference on Smart grids, Power and Advanced Control Engineering (ICSPACE), 2017Renewable 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
openaire +1 more source
Analysis of oscillation modes in a VSC-HVDC system
2015 5th International Conference on Electric Utility Deregulation and Restructuring and Power Technologies (DRPT), 2015Harmonic instability may occur when a controlled voltage source converter interacts with the local power grid in a power system. In this paper, oscillation modes are analyzed in a voltage source converter based high voltage direct current (VSC-HVDC) system.
Shan Jiang, Xin Tang
openaire +1 more source
DC line protection for VSC-HVDC system
2012 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES), 2012Voltage 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 filter design methodology of a VSC-HVDC system
2013 IEEE International Autumn Meeting on Power Electronics and Computing (ROPEC), 2013This paper describes a methodology for the design of AC and DC filters of a VSC-HVDC system, based on mathematical calculations and simulations in Matlab Simulink®. The methodology is implemented in a ± 125kV and 200MW VSC-HVDC system. The 3D-SVPWM modulation technique is used to control the VSC converters of the system as a method to reduce high ...
Daniel Perez Dorantes +2 more
openaire +1 more source
Research on dynamic characteristics of VSC-HVDC system
2006 IEEE Power Engineering Society General Meeting, 2006VSC-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 +4 more
openaire +1 more source
The Research on the VSC-HVDC Control System Structure
2012 Asia-Pacific Power and Energy Engineering Conference, 2012the 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
openaire +1 more source
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, 2008The 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 +2 more
openaire +1 more source
Fault Current Limiters for VSC-HVDC systems
10th IET International Conference on AC and DC Power Transmission (ACDC 2012), 2012Fault 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 +2 more
openaire +1 more source
Impact of VSC HVdc on AC System Generation
13th IET International Conference on AC and DC Power Transmission (ACDC 2017), 2017This paper investigates the impact of different control modes of VSC HVdc to the transient stability of power systems. VSC HVdc offers fast bi-directional power control in addition to fast ac voltage control. This feature is utilized in this study to enhance the transient stability of a conventional generator in a power system.
S. Arunprasanth +3 more
openaire +1 more source
Simplified Modeling of VSC-HVDC in Power System Stability Studies
IFAC Proceedings Volumes, 2014Abstract This paper presents a simplified modeling approach for a voltage source converter based high voltage DC transmission line (VSC-HVDC) for use in power system dynamic studies. In the AC grid sending-end and receiving-end converters (SEC and REC) of the HVDC system are represented by controlled Thevenin sources.
Shewarega, Fekadu, Erlich, István
openaire +2 more sources