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Electricity grid interconnections have played a key role in the history of electric power systems for economic and optimum utilization of resources. Most national and regional power systems that exist today have begun many decades ago as isolated systems. In similar way, Indian grid has also evolved from state grid to regional grid and then their synchronization one after another. On 31st December...
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In this Paper, the feasibility of an unequal amplitude equal phase power splitter using a microstrip technology in the UHF band is proposed. Unequal splitter with 3-options is designed in the present work, these are conventional microstrip design, Power splitter with input transformer & arbitrary design impedance (A) is introduced to control high impedance values and Power splitter with general...
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This paper utilizes a recently developed novel biologically-inspired krill herd algorithm to solve combined heat and power economic emission dispatch optimization problem. Herding behavior of krill individuals is considered to formulate this algorithm. The objective function is defined by the distances of each individual krill from food and from highest density of the herd. The instantaneous position...
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Extreme Learning Adaptive Neuro Fuzzy Inference System (ELANFIS) is a new learning machine which combines the learning capabilities of neural networks and the explicit knowledge of the fuzzy systems as in the case of conventional adaptive neuro-fuzzy inference system (ANFIS). ELANFIS reduces the computational complexity of ANFIS by eliminating the hybrid learning algorithm and avoids the randomness...
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With the advancements in technology, the main factor which plays a crucial role in designing any circuit is power. Low power design has been the term being used by most of the researchers. Reversible logic is one of the solution which can be used to make the designs consume less power. Reversible logic circuits are also the basic building blocks of a quantum computer which will be a reality in the...
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Speech emotion recognition has an increasingly significant role in human — computer interfaces as well as in the communication among human beings. This paper presents the results of investigations in emotion recognition based on the prosodic features of 1050 segmental and 1400 supra segmental speech wave files in English. The investigations were done in neutral and six basic emotions collected from...
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Reliable and protected solar inverter is necessary for effective smart grid implementation. Grid fed hybrid singlestage single-phase solar inverter with incremental conductance MPPT (INC+regulator), closed loop current and voltage controller is implemented here. In normal condition inverter current T.H.D is under the limit as per IEEE-519. In this paper, Anti-islanding protection is achieved by using...
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Cloud computing is a service oriented paradigm that aims at sharing resources among a massive number of tenants and users. This sharing facility that it provides coupled with the sheer number of users make cloud environments susceptible to major security risks. Hence, security and auditing of cloud systems is of great relevance. Provenance is a meta-data history of objects which aid in verifiability,...
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This paper presents the operating principle and application of an active fault current limiter (FCL) to a single phase distribution system. It employs an AC voltage source in phase with system voltage and an air core ideal transformer. The primary winding of the transformer is in series with AC main circuit and the secondary winding is connected to the homophase AC voltage source. In normal operating...
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Crisis Management Plans are important for enhancing the resilience of the bulk electric power supply system. Fast restoration from a partial/total blackout can reduce the economic loss and customer discomfort from power supply interruptions. Black start mock drills are essential for testing the equipment capabilities in restorative mode. They are also an opportunity for operators in Generating Station,...
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In this paper, we have developed a new local descriptor based on Stockwell transform. The descriptor is made scale and affine normalized so that it is suitable for different types of applications. An experimental investigation has been conducted considering face recognition problem. The sparse representation based classification scheme is used for face classification. By extracting the facial features...
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Transformers are basically a static device with more than 95% efficiency. The major losses in transformers are copper loss and core loss. The minor losses are frictional and windage losses. But the formation of neutral current in the distribution transformers will create minor loss that will affect the efficiency of the transformer. There are many reasons for the formation of neutral current. In this...
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Orthogonal frequency division multiplexing (OFDM) is an attractive current technology to achieve high data rate in wireless communication systems. One of the main drawback associated with the OFDM is high peak to average power ratio (PAPR). It adversely affects the cost and complexity of high power amplifier (HPA), and other devices such as ADC and DAC in the OFDM system. Selective mapping (SLM) is...
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DC microgrids have sources such as solar power plants, battery storage systems, fuel cell power plants. DC-DC converters are used in each of these systems to interface them with DC bus of the microgrid. For economically optimized operation of microgrid, it is necessary to have a control system enabling desired load sharing between the DC-DC converters. The solution described here is incorporation...
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Security attacks through Internet have proliferated in recent years. An Intrusion Detection System in the general framework of a network catches the perpetrators before they do real damage to the resources. The performance of Intrusion Detection Systems usually depends on the false alarm rate and the detection rate, since true positive and false positive trade-off is always a major challenge in the...
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This paper presents a disturbance observer based adaptive sliding mode controller. The switching gain of the controller is adjusted based on the estimated value of the disturbances to avoid high amplitude chattering. The main idea here is to consider the unknown disturbances in sliding function dynamics which results in a simple linear observer. The proposed technique is then applied to a single machine...
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The detection and clearance of faults are important for safe and optimal operation of any HVDC system. A feasible method is required for protective control for secure operation of HVDC system during faults. This paper presents the identification and classification of different faults that can occur in a VSC-HVDC system with the help of a fuzzy logic method. Simulation studies of various ac side faults...
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The behavior of many physical and biological processes and systems can be described satisfactorily by fractional order models. A new method, termed fractional linear prediction (FLP) based on fractional calculus, is used to model ictal and seizure-free EEG signals. Through numerical simulations it is demonstrated that, the EEG signal can be modeled accurately, by using a few integrals of fractional...
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MWSN is an emerging area of research and most of the work in the field of MWSN is done at the simulation level as there is hardly any cost effective hardware platform(node/mote) available for MWSN applications. To handle mobility, the MWSN node should be much more efficient than the nodes in static WSN. Moreover, a MWSN node should be capable of handling real time mobility control, path planning and...
