Results 151 to 160 of about 489 (168)

Observability analysis of power system including VSC-HVDC

International Conference on Sustainable Power Generation and Supply (SUPERGEN 2012), 2012
The mathematical model of Voltage Source Converter (VSC) is totally different from the mathematical model of AC system. The observability analysis methods for AC system should be improved for modern power systems including VSC-HVDC. This paper presents an observability analysis algorithm for VSC-AC system.
null Zuowei Chen, null Pengfei Tian, null Chongru Liu, null Wei Wang, null Haifeng Li   +4 more
openaire   +1 more source

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
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

Nonlinear control scheme for VSC-HVDC transmission systems

2008 12th International Middle-East Power System Conference, 2008
This paper presents a nonlinear control scheme for VSC-HVDC transmission system. The design of the proposed nonlinear controller has been performed in a rotating reference frame fixed to the grid voltage vectors. The controller is designed to provide high dynamic performance and complete decouple control of active and reactive power.
Mohamed Rashed, Sayed M. Abo El-Anwar, Fathi M. H. Youssef   +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), 2017
This 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, U.D. Annakkage, C. Karawita, R. Kuffel   +3 more
openaire   +1 more source

Integral backstepping control design for VSC-HVDC systems

2014 15th International Conference on Sciences and Techniques of Automatic Control and Computer Engineering (STA), 2014
This paper presents a backstepping control strategy based on Lyapunov theory for VSC-HVDC transmission systems. The controller is able to ensure the tracking of the output variables and the stability of the studied power system. Indeed, the required performances have been improved using a nonlinear Backstepping method where an integral action is added.
Mohamed Ayari, Mohamed Arbi Ghariani, Mohamed Moez Belhaouane, Naceur Benhadj Braiek   +3 more
openaire   +1 more source

Frequency control capability of VSC-HVDC transmission system

11th IET International Conference on AC and DC Power Transmission, 2015
High voltage direct current (HVDC) systems have been used as an effective solution to transmit power over long distances. Performance of HVDC systems has significantly improved with the emergence of voltage source converter based HVDC (VSC-HVDC). Increased controllability provides independent control of active and reactive power which facilitates ...
Elansari, A.S., Finney, S.J., Burr, J., Edrah, M.F.   +3 more
openaire   +2 more sources

Simplified Modeling of VSC-HVDC in Power System Stability Studies

IFAC Proceedings Volumes, 2014
Abstract 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

Adaptive Backstepping Control and Stabilization of VSC-HVDC Systems

2020 5th International Conference on Renewable Energies for Developing Countries (REDEC), 2020
today, electricity transmission capacity is growing due to renewable energy generation and the needs of the electricity market. The result is a major breakthrough in the development of HVDC transport systems to overcome the limitations of HVAC transport systems.
Mohamed amine Kazi, Nadia Machkour, Radouane Majdoul   +2 more
openaire   +1 more source

Offshore VSC-HVDC Networks

2017
The transition towards a sustainable society calls for the massive deployment of renewable energy sources such as large wind parks located far offshore. High-voltage direct current transmission based on voltage sourced converter technology (VSC-HVDC) offers a wide range of technological benefits that foster the grid integration of offshore wind parks ...
openaire   +3 more sources