EECon - 2016

Permanent URI for this collectionhttp://192.248.9.226/handle/123/17337

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Browsing EECon - 2016 by Author "Aravinthan, V"

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    Local detection of distribution level faults in a distributed sensor monitoring network using HMM
    (Institute of Electrical and Electronics Engineers, Inc., 2016-12) Balachandran, T; Aravinthan, V; Thiruvaran, T; Rajapakse, A; Prasad, WD
    The Smart distribution system initiative requires an increased usage of the distribution feeder-level communication infrastructure to improve automation. Using a distributed sensor network for monitoring the distribution system is proposed by various researchers. Such distributed sensor communication architecture requires information to be received within an allowable delay and a minimum processing time at the control center. Increasing the number of sensors in the network also increases the data flow in the communication medium. Therefore, to reduce the burden in the communication medium, an event driven communication protocol could be utilized. This communication architecture assumed that the sensors used a local fault detection system to detect the abnormal event before communicating with the control center. This work focusses on local detection of faults in a distributed sensor network using a Hidden Markov Model considering a minimum processing time.
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    Sub-system based reliability assessment for distribution transformer
    (Institute of Electrical and Electronics Engineers, Inc., 2016-12) Rahman, MRU; Aravinthan, V; Rajapakse, A; Prasad, WD
    Implementation of Smart Grid into the power system has made our grid more robust and reliable. Due to integration of two-way, real time communication it is possible to monitor equipment through sensors. Continuous monitoring will help to predict the state of the equipment. Due to this fact and also to ensure the system performance, time based maintenance can be replaced by condition or reliability based maintenance. Contribution of this work is to identify the appropriate standards for to be used for the transformer subcomponents and develop appropriate Weibull distribution parameters for each subcomponent for a modified series-parallel topology of distribution transformer. This modification is done based on the available measurements and standards. Using the developed reliability model, Monte Carlo simulation was performed to evaluate the behavior of these parameters.