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Demand side management (DSM) can help reduce demand of the system, resulting in less generating capacity and less total production cost in the future. Generally, each DSM activity, e.g., replacing old with new higher efficiency equipment, has its own cost. Its worth in the system may be used as one of the decision components. Therefore, the methodology in evaluating the DSM worth under the framework...
At present, the solar energy is a highly potential alternative for solving the energy crisis and improving system quality. On the other hand, the penetration of PVGS may cause an islanding problem. This paper derives Non Detection Zone (NDZ) of Over/Under voltage and Over/Under frequency method in order to increase accuracy for islanding prevention. In addition to safety issue, this paper proposes...
Electrical insulators of the Provincial Electricity Authority (PEA) of medium system are mostly porcelain insulator types that consists of suspension, pin type, line post, and pin post insulators. The distribution lines will be polluted by industrial contaminants, salt fog or natural dust. Experience shows that pollution flashover is one of the main natural calamities harming and affecting the voltage...
Optical flow is a technique for identifying the density velocity or motion vector (MV) in each pixel for motion estimation of image sequences. Under the real situation, many undesired conditions usually generate noises over the sequences and therefore this situation is corrupts the performance in reliability of optical flow. In order to increase the reliability of the density velocity, this paper...
In 2011, India has approximately 171 GW of installed capacity using fossil fuels. The fossil energy sources in Maharashtra state India has been depleting and short fall in centralized energy generation is growing day by day with increasing demand and Maharashtra State Electricity Distribution Company Ltd (MSEDCL) has to carry out heavy forced load shedding. Renewable energy sector growth in India...
This paper proposes a new multi-rate H.264 scalable video multicast in lossy network using network coding. We first prioritize video layer based on its effect to the end-to-end video quality. Each video layer is routed via the path obtained from the optimization framework under the constraints on QoS guarantees. Different destinations may receive different number of video layers depended on their...
Nowadays, a wireless mesh network can be inexpensively deployed to provide the Internet access. One key challenge in the deployment is how to maintain high transfer throughput. As the network size grows, the transfer throughput falls rapidly due to MAC interference. Caching has been proposed in previous works to solve this problem. The common caching technique is on-path caching, whereby the caching...
This paper presents an improved dual output full-bridge series resonant inverter with asymmetrical voltage-cancellation (AVC) control for cooking appliance. The important advantage of the proposed control is that the output power can be adjustable independently while achieving the zero-voltage switching (ZVS) operation. The power loss analysis on the insulated gate bipolar transistor (IGBT) and an...
In this paper, the impact of renewable energy penetration to Thailand generation system is investigated from 2010 to 2030 by using scenario based analysis. Energy accounting model based on probabilistic method is used to calculate system indices and handle the balance of energy demand and supply. The baseline scenario is developed from Thailand Power Development Plan 2010 (PDP2010), whereas other...
This paper analyzes the impacts of Distributed Generation (DG) disconnecting time on utility and DG, especially the impact on utility reclosing time. The reclosing time is a temporary interval that a utility protective device is opened after a fault occurrence. Generally, DG must be disconnected before the end of this reclosing time. Mostly, DG may be requested to be disconnected after a fault occurrence...
This paper presents the method to evaluate the reliability and interrupted energy rate for the high reliable electrical system. The evaluated system is the petrochemical plant system designed based on Tier classification that is a criterion to address a reliability level of electrical and mechanical infrastructure of the data center. This paper modifies the system to the different infrastructure for...
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