Serwis Infona wykorzystuje pliki cookies (ciasteczka). Są to wartości tekstowe, zapamiętywane przez przeglądarkę na urządzeniu użytkownika. Nasz serwis ma dostęp do tych wartości oraz wykorzystuje je do zapamiętania danych dotyczących użytkownika, takich jak np. ustawienia (typu widok ekranu, wybór języka interfejsu), zapamiętanie zalogowania. Korzystanie z serwisu Infona oznacza zgodę na zapis informacji i ich wykorzystanie dla celów korzytania z serwisu. Więcej informacji można znaleźć w Polityce prywatności oraz Regulaminie serwisu. Zamknięcie tego okienka potwierdza zapoznanie się z informacją o plikach cookies, akceptację polityki prywatności i regulaminu oraz sposobu wykorzystywania plików cookies w serwisie. Możesz zmienić ustawienia obsługi cookies w swojej przeglądarce.
The key to realize the low-voltage ride-through (LVRT) of the permanent-magnet synchronous generator (PMSG) is to maintain the DC-link voltage within its acceptable range. By introducing the DC-link voltage to the outer-loop power control of the machine-side converter (MSC), the PMSG may actively adjust its active power output to reduce the DC-link voltage deviation. Given the comparatively slow response...
Doubly-fed induction generators (DFIG) are widely used in the wind farms. Many papers focus on their behavior connecting to an infinite bus and the influence on the power system stability ignoring the grid side converters. In this paper, the dynamic simulation of doubly-fed induction generators on multi-machine power system is studied. With the decoupled active and reactive power control scheme, compensated...
The static var compensators (SVCs) widely applied in power system have remarkable effect on fast voltage control and var compensation, and help to improve voltage stability and transmission capability. Their control function is decided by the reference voltage, the slope, and the time constant. Since there are possibly multiple SVCs closely located, the control parameters should be carefully set to...
Voltage control capability of SVCs is decided by their var reserves, regulation slopes and available margins. In this paper, a sensitivity model for var dispatch is proposed to restore the var reserve of SVC while keeping desirable voltage profile, and the control capability of SVCs is defined by the available control margin, the slopes, the reference voltage, the static voltage characteristic of...
Traditionally, voltage control capability of the SVCs is described by PV bus model with full capacity available. In this paper, based on the sensitivity model for var dispatch and voltage control for SVCs, contributing factors, e.g. the available control margin, slope, reference voltage, static voltage characteristic of the power system, are studied. The numerical results show that: 1) voltage control...
A voltage collapse is defined as the process by which voltage instability leads to a very low voltage profile in a significant part of the system. Under-voltage load-shedding is an efficient scheme to prevent voltage collapse. The paper analyses the mechanism of under-voltage load-shedding preventing voltage collapse, compares distributed load-shedding scheme with centralized scheme, introduces under-voltage...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.