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.
Consensus based distributed robust adaptive finite-time secondary voltage control is designed for inverter-based islanded AC microgrids. The design combines decentralized local states information with the states of the neighboring distributed generators with directed communication topology. Robust control algorithms are used locally for each distributed generator to deal with uncertainty. Lyapunov...
As one of the basic insulating materials, polyimide films have been widely used in the insulation system in wind turbine generators. However, the pulse voltage from the converter often causes overvoltage and localized high electrical field in the insulation system. Surface charge could affect the dielectric property and cause the breakdown of insulation. Direct fluorination is a method to modify the...
The transient stability is an important factor to estimate the maximum transmission power of turbine generator and guarantee the safety and stable operation of power system [1]. It is the ability of power system to maintain synchronism in the first oscillation period after three-phase short circuit. A first swing stable system is considered stable if the system has adequate damping [2]. The rotor...
In this work, we propose internet-based remote measurement, protection, command and control system for future smart transmission grid applications. Algorithm proposed here comprises local and remote measurement signals to damp out local and interarea oscillation mode in order to ensure desired dynamic performance of the large scale power transmission grid. Using Lyapunov like energy functional, stability...
Firewalls are the mainstay of enterprise security and the most widely adopted technology for protecting private networks. As the quality of protection provided by a firewall directly depends on the quality of its policy (i.e., configuration), ensuring the correctness of firewall policies is important and yet difficult. To help ensure the correctness, we propose a systematic structural testing approach...
Concerns about climate change, rising fossil fuel prices and energy security have spurred interest in renewable energy generation and smart grid. Due to the dynamic power demands and intermittent renewable energy resources, optimal scheduling of power generation systems is important to minimize cost and green house gas emissions, and to avoid blackouts in smart grid. In this paper, we propose a distributed...
There is growing interest in renewable energy resources and smart grid. Since most renewable sources are highly intermittent, they can induce significan fluctuation on the supply side of the power grid. On the other hand, the use of smart meters and smart appliances in the smart grid can cause significan uncertainties on the demand side as well. Unit commitment scheduling of power generation systems...
This paper deals with the assessment of the vulnerability of the transmission grid under extreme contingencies, including a terrorist threat or an exceptional natural disaster. It proposes a two-step screening-and-ranking approach to find the dynamically most disruptive disturbances created by multiple-line outages. In the screening step, critical transmission lines are selected according to the sensitivities...
This paper presents a dispatch method considering the power output variations of wind turbines in power systems. Both analytic method and Monte Carlo simulation have been used to calculate the probability of real power outputs of wind turbines. For the reactive power, asynchronous wind turbine model is used to describe the relationship between the injected reactive power and the active power. In the...
In this paper, we summarize our research activities in Condition Based Maintenance (CBM) of critical power system components using Wireless Sensor Network (WSN). First, two testbeds were built: one for emulating electrical faults in motor windings and one for emulating mechanical faults in motors and generators. Second, appropriate sensors were installed on the testbeds and sensor data were collected...
Podaj zakres dat dla filtrowania wyświetlonych wyników. Możesz podać datę początkową, końcową lub obie daty. Daty możesz wpisać ręcznie lub wybrać za pomocą kalendarza.