Results 211 to 220 of about 11,966 (258)
Some of the next articles are maybe not open access.
Flexible AC transmission systems simulation and control
3D Africon Conference. Africon '92 Proceedings (Cat. No.92CH3215), 2003Concepts relating to flexible AC transmission systems (FACTS) are gaining popularity for enhancing the power transfer limits as well as the stability characteristics of power systems. The authors present an overview of FACTS devices and associated nonlinear, modern control strategies.
R. Spee, W. Zhu
openaire +1 more source
Flexible AC Transmission System Controllers: An Evaluation
Materials Science Forum, 2010Electricity market activities and a growing demand for electricity have led to heavily stressed power systems. This requires operation of the networks closer to their stability limits. Cost effective solutions are preferred over network extensions. The flexible alternating current transmission system (FACTS), a new technology based on power electronics,
Pavlos S. Georgilakis, Peter G. Vernados
openaire +1 more source
DC and Flexible AC Transmission Systems
2014Under certain circumstances, it is advantageous to transmit power over a DC transmission line instead of an AC transmission line. DC transmission requires conversion from AC to DC at one end of the transmission line and conversion from DC to AC at the other end of the transmission line.
openaire +1 more source
Control of flexible AC transmission system by evolutionary fuzzy controller
2004 IEEE International Conference on Systems, Man and Cybernetics (IEEE Cat. No.04CH37583), 2005A fuzzy controller designed by the hybrid of genetic algorithm and particle swarm optimization (F-HGAPSO) is employed for thyristor controlled series capacitor to improve the transient stability of flexible AC transmission system. The fuzzy controller outputs an approximate series capacitance to flexible AC transmission system according to both the ...
Chun-Feng Lu, Chia-Feng Juang
openaire +1 more source
Hierarchical intelligent control with flexible AC transmission systems application
Control Engineering Practice, 1993Abstract A novel hierarchical intelligent controller configuration is proposed using an artificial neural network as a control-mode classifier in the supervisory level and a set of pre-designed controllers in the lower level. Controller outputs are modified nonlinearly by the classifying signals in a structure resembling one artificial neuron with ...
R.R. Zakrzewski +2 more
openaire +1 more source
RGA applications in the control of flexible AC transmission systems
2003 46th Midwest Symposium on Circuits and Systems, 2006FACTS damping control is superimposed on FACTS normal control functions and hence its effectiveness can be hampered by the interactions between FACTS normal control and damping control function. This paper proposes a modified method based on the relative gain array (RGA) theory to assess the interactions between FACTS normal control and damping control
H.F. Wang +3 more
openaire +1 more source
Vacuum Circuit Breakers in Flexible AC Transmission Systems
IEEE Transactions on Power Delivery, 2012This paper shows two applications for using vacuum circuit breakers (VCBs) in flexible ac transmission systems in the high-voltage (HV) power grid. This is first a mechanically switched reactor, which is series connected to a thyristor-controlled series compensator in order to enhance the inductive working range.
Wenzel, T., Leibfried, T.
openaire +2 more sources
Flexible AC Transmission Systems (FACTS)
2016Flexible AC Transmission Systems (FACTS): Newton Power-Flow Modeling of Voltage-Sourced Converter-Based Controllers introduces different voltage-sourced converter (VSC)-based FACTS controllers and VSC-based high-voltage direct current (VSC-HVDC) systems and their working principles, explaining how FACTS controllers exchange real and reactive power with
openaire +1 more source
Evolutionary fuzzy control of flexible AC transmission system
IEE Proceedings - Generation, Transmission and Distribution, 2005A fuzzy-controller design by the hybrid of genetic algorithm and particle-swarm optimisation (F-HGAPSO) is employed for a thyristor-controlled series capacitor (TCSC) to improve the transient stability of flexible AC transmission systems (FACTS). According to the variation of rotation speed, a fuzzy controller decides an approximate series capacitance ...
Chun-Feng Lu, Chia-Feng Juang
openaire +1 more source
Flexible AC transmission systems: technology for the future
[1991] Proceedings of the 20th Electrical Electronics Insulation Conference, 2002A novel concept of power systems design and operation has been developed: flexible AC transmission systems (FACTS). FACTS technology can increase the loading on existing systems and assist in directing power flow in an interconnected network. The concept is based on the following view: systems are mechanically controlled for the most part, and the ...
openaire +1 more source