The Experts below are selected from a list of 1044 Experts worldwide ranked by ideXlab platform

R.c. Redondo - One of the best experts on this subject based on the ideXlab platform.

  • Four-wire three-phase load balancing with Static Var Compensators
    International Journal of Electrical Power & Energy Systems, 2011
    Co-Authors: Félix Redondo Quintela, J.m.g. Arévalo, R.c. Redondo, Norberto Redondo Melchor
    Abstract:

    Static Var Compensators (SVCs) can balance the phase currents of three-wire three-phase loads and compensate their reactive power. Thus, the SVC-load set becomes a balanced load with any desired power factor. This paper proposes a method to use SVCs with four-wire three-phase loads which still perform those functions: load balancing and reactive power compensation. As a result, any load connected to a three-(or-four-)wire three-phase system can be transformed into a balanced load with unity power factor, even if it is a single-phase load. Other properties that appear in particular cases are also analyzed.

  • power analysis of Static Var Compensators
    International Journal of Electrical Power & Energy Systems, 2008
    Co-Authors: Félix Redondo Quintela, J.m.g. Arévalo, R.c. Redondo
    Abstract:

    Analysis of three-phase loads usually assume them to be three impedances in a star or triangle connection. This is the reason why obtained results can only be considered valid for passive loads, strictly speaking. Analysis leading to the proposal of some Static Compensators is usually performed in this way, which induces to believe that this Compensators are only valid for passive loads. An analysis procedure, which uses only powers to describe loads, is expounded in this paper. If applied to the analysis of Static Compensators, it reveals unequivocally their usefulness with active and passive three-phase loads. Therefore, this method is more general and, as it will be seen, easier.

Félix Redondo Quintela - One of the best experts on this subject based on the ideXlab platform.

  • Four-wire three-phase load balancing with Static Var Compensators
    International Journal of Electrical Power & Energy Systems, 2011
    Co-Authors: Félix Redondo Quintela, J.m.g. Arévalo, R.c. Redondo, Norberto Redondo Melchor
    Abstract:

    Static Var Compensators (SVCs) can balance the phase currents of three-wire three-phase loads and compensate their reactive power. Thus, the SVC-load set becomes a balanced load with any desired power factor. This paper proposes a method to use SVCs with four-wire three-phase loads which still perform those functions: load balancing and reactive power compensation. As a result, any load connected to a three-(or-four-)wire three-phase system can be transformed into a balanced load with unity power factor, even if it is a single-phase load. Other properties that appear in particular cases are also analyzed.

  • power analysis of Static Var Compensators
    International Journal of Electrical Power & Energy Systems, 2008
    Co-Authors: Félix Redondo Quintela, J.m.g. Arévalo, R.c. Redondo
    Abstract:

    Analysis of three-phase loads usually assume them to be three impedances in a star or triangle connection. This is the reason why obtained results can only be considered valid for passive loads, strictly speaking. Analysis leading to the proposal of some Static Compensators is usually performed in this way, which induces to believe that this Compensators are only valid for passive loads. An analysis procedure, which uses only powers to describe loads, is expounded in this paper. If applied to the analysis of Static Compensators, it reveals unequivocally their usefulness with active and passive three-phase loads. Therefore, this method is more general and, as it will be seen, easier.

M Avila A Rosales - One of the best experts on this subject based on the ideXlab platform.

K R Padiyar - One of the best experts on this subject based on the ideXlab platform.

A R Messina - One of the best experts on this subject based on the ideXlab platform.

  • analysis of sub synchronous torsional interactions with Static Var Compensators effect of network and load characteristics
    IEEE PowerTech Conference, 2001
    Co-Authors: C Rivera A Salamanca, Olguin D Salinas, A R Messina
    Abstract:

    In this paper, a comprehensive analytical methodology for the analysis and study of subsynchronous torsional interactions (SSTI) between turbine-generators and Static Var Compensators (SVCs) embedded in a series capacitive-compensated AC power network is presented. Emphasis is being placed upon the study of the effect of load characteristics on SSTI. The methodology is based on a flexible approach to perform state-space and frequency domain analyses of multi-machine power systems.

  • advanced concepts of analysing Static Var Compensators to damp inter area oscillation modes
    European Transactions on Electrical Power, 1999
    Co-Authors: M Nayebzadeh, A R Messina
    Abstract:

    The analysis of low-frequency inter-area oscillations is of special concern in large weakly interconnected power systems, The ability of Static VA r Compensators (SVC) to contribute to damping depends strongly on the relative location of generation, load and the SVC. A comprehensive investigation of the use of Static Var Compensators to aid damping of low-frequency inter-area oscillations in a real weakly interconnected large power system is presented. Based on modal analysis, efficient algorithms to compute voltage- and power-oscillation flow for each mode of concern are developed. Controllability and observability measures are also used to assess the impact of dynamic voltage support on system damping as well as to identify optimal locations for SVC. The knowledge gained by these techniques allows to investigate the influence of existent SVC on overall system damping as well as to evaluate suitable alternatives to site new devices. Detailed time-domain simulations are finally performed to check the validity of the knowledge gained and to assess the impact of dynamic voltage support on system transient behaviour.

  • analytical investigation of the use of Static Var Compensators to aid damping of inter area oscillations
    International Journal of Electrical Power & Energy Systems, 1999
    Co-Authors: A R Messina, M Nayebzadeh
    Abstract:

    A comprehensive investigation of the use of Static Var Compensators (SVCs) to aid damping of low-frequency inter-area oscillations in large interconnected power systems is presented. The study of inter-area oscillations and the design of controls is done using modal analysis of a linearized model of the power system. Based on this model an efficient algorithm to compute the power oscillation flow for each mode of concern is developed. This approach allows to identify the nature of oscillation patterns and provides important information needed in the application of SVCs. Controllability and observability measures are then used to assess the impact of dynamic voltage support on system damping as well as to identify optimal locations for SVCs. The influence of system structure and load effect on the SVC performance is discussed. Detailed time-domain analyses are finally performed to check the validity of the analysis and to assess the impact of dynamic voltage support on system transient behaviour.