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This paper proposes a Modified Multiple Triangular Inequality Elimination (MMTIE) to further reduce the search number of candidate codevectors. The MMTIE adopts the same original search space as the MTIE scheme with the initial best-matched codevector selected by the Initial Index Code Assignment (IICA), and integrates the intersection rule of the Candidate Codevectors Group (CCG) scheme to further...
In this paper, a validity index method VDOGK, a variation of the index method VDO, for estimating the optimal number of clusters in datasets with concave-/elongated-shaped clusters is presented. The new index uses Gustafson-Kessel FCM to partition the dataset so that geometric-shape-sensitivity problem of FCM can be reduced. It is based on both dispersion and overlap measures, where the dispersion...
This letter proposes a concept of the downside risk (DR) for the study of probabilistic optimal power flow (POPF) with wind power integrated. It aims to obtain optimal dispatch solutions with the minimal expectation of generation cost and the minimal downside risk. This risk is manifested by semi-variance (semi-deviation) of generation cost in a uncertain environment of wind power. The downside risk...
This paper presents a novel fault diagnosis model for oil-immersed power transformers based on dissolved gas analysis. The model is rooted on the theories of rough set and support vector machine. A fitness function based on attribute dependence is developed to identify fault features to improve classification accuracy of transformer fault samples by using Genetic Algorithm. To get improved classification...
This paper proposes a novel scheme to detect the saturation of current transformers (CTs) for protection blocking. The scheme modifies the morphological skeleton method and applies it to analyze the shape information of CT secondary current. Afterwards, two indices are introduced to determine the existence of saturation. Simulation studies under a variety of fault conditions have been conducted using...
The courses on communication theory, system and technology are very important and indispensable fundamental courses in communication, electronic and information related field. For communication theory and system class teaching, three kinds of coursed design are introduced in this paper, where the fundamental concepts and theories for undergraduate students, the deep understanding and system concept...
This paper records a successful application of linear parameter-varying (LPV) technique to energy management upon DC electric scooters (ES). Postulating Dynamic Duality, we identify the ES dynamics into a LPV plant that captures the nonlinearity, whereof the steady and transient responses perfectly match with the measured data. Incorporation of this LPV plant with per-distance performances upon energy...
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