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Traditional energy shortage leads to the rapid development of wind power. And the integration technology of wind farm into the large grid is now becoming a major concern. In this paper, two different types of integration technology, which are HVAC (high voltage alternating current) and HVDC (high voltage direct current), are compared both in the theoretical and practical analysis. Besides, a simplified...
A new COI-based backstepping sliding-mode method for emergency frequency control of interconnected AC/DC power systems is proposed in this paper. It aims to provide inter-area power support to the disturbed control area(s) through the intact interconnecting structure under emergency conditions, when the normal Automatic Generation Control (AGC) is suspended to avoid worsening frequency stability....
To improve the transient angle stability of an two- area interconnected ac/dc power system, robust controllers are suggested in this note both for excitation systems of generators and dc power modulation, based on the COI (center of inertia) dynamic information of the system. In the control strategy, the rotor angles and frequencies of all generators track the angle and frequency of the dynamic COI...
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