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Integration of large-scale photovoltaic power plants is increasing significantly in many develop and developing countries. Although photovoltaic (PV) plants are renewable and environmental friendly, they can bring negative impact in the form of low frequency oscillation due to the uncertainty of power output and negligible inertia. Hence, battery energy storage systems (BESSs) are becoming an inevitable...
The interest on electric vehicles growing as a sustainable alternative to fossil fuel driven vehicles. Even though there are a number of grid impact studies, only a scant attention has been paid to study the impact of EV charging on system stability. Electrification of transportation brings significant load integration to the grid. This could profoundly influence stability of the grid. Hence, it is...
This paper presents the contingency ranking methodology of large interconnected power system for low frequency oscillatory instability problems. The oscillatory instability leading to blackout is often triggered by contingencies, such as line outage. In literatures, so far there is no such methodology presented for contingency ranking related to low frequency oscillatory instability. Two methodologies,...
Low-frequency inter-area oscillations are threat to secure operation of power systems. Power system stabilizer and Power oscillation damping controllers are used to provide damping to oscillatory modes. Such oscillatory modes, inter-area modes in particular, are significantly affected by change in operating conditions and load characteristics. In this paper, influence of load characteristics on performance...
Integration of renewable energy resources has introduced a number of dynamic stability issues in distribution systems. One of the major issues is the dynamic loadability limit, which is caused by a pair of eigenvalues crossing the imaginary axis of a complex plane. Due to the influx of distributed generators and controllers, a possible negative interaction can limit the dynamic loadability of emerging...
The integration of large-scale distributed generation (DG) and energy storage significantly affect the dynamic behaviors of distribution systems. Distributed systems are facing new challenges in terms of their dynamic behaviors due to the addition of large-scale DG into low-voltage distribution systems. This paper analyses the important effects of the penetration of large-scale wind, solar and energy...
Power system low frequency oscillations influence dynamic behaviour of a complex power system and threaten its security. The dynamic performance of power system can be improved by damping low frequency oscillation with the help of supplementary controllers. This paper presents the design of supplementary controller for Static Var Compensator (SVC) to damp low frequency, in particular inter-area oscillations...
Low frequency oscillations with growing amplitude can be a threat to secure operation of power system. Such oscillatory behaviour can be dealt with proper design of supplementary controller with the best input signal. This paper presents a design of supplementary controller for static Var compensator (SVC) using H∞ loop-shaping technique to damp low frequency, in particular inter-area oscillations...
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