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This paper introduces uni-grounded low-voltage (LV) AC microgrid configurations. A generalised fault protection structure is proposed for all different uni-grounded LVAC microgrids. This protection structure consists of six individual protection zones in a uni-grounded LVAC microgrid. They are protection zones of distributed generators (DGs) and energy storage devices (ESSs), transformers, power converters,...
This paper proposes possible fault protection solutions for an ungrounded AC microgrid (MG) based on a review on existing microgrid protection solutions in recent years. A generalized fault protection system of ungrounded low-voltage (LV) AC microgrids is divided into six individual protection zones including: (i) protection of distributed generators (DGs) and energy storage devices; (ii) protection...
Modern power system is a hybrid power system, which contains renewable power plants. In those power plants, wind farm has shown the world's fastest rate of growth. The reported researches about decentralized coordinated control of power system are all based on synchronous generator (SG). It is not suitable that applying this decentralized-coordinated method to a hybrid power system for that the wind-generated...
Applications of single Flywheel Energy Storage System (FESS) to suppress power system multi-mode oscillations is presented in the paper. Based on independent active power and reactive power control loops and damping torque analysis, the feasibility of damping power system multi-mode oscillations using single FESS is studied. Based on modal analysis, the effective control loops are determined to install...
To make the intelligent virtual agent become more natural and believable, giving her emotion ability is very important. According to Basic Emotion Theory and Cognitive Evaluation Theory in Psychology, it proposes an emotion model based on Fuzzy Rules. Firstly, emotion factor is generated according to the emotion elicited rules based on Fuzzy IF-THEN rules. Then a nonlinear function restricted by personality,...
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