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This paper proposes a network reconfiguration methodology for the three-phase unbalanced distribution system under both the normal operating and post-fault conditions. In normal operating condition, network reconfiguration is performed for real power loss minimization whereas, in the post-fault condition, reconfiguration is performed for faulty line isolation considering maximum demand should be met...
A CO2 lidar double-pulse two-micron high-energy transmitter, tuned to on- and off-line absorption wavelengths, has been developed. Transmitter operation and performance has been verified on ground and airborne platform.
Volatility of load demand and electricity price has set a challenging task In the operational planning and controls of modem power system. Therefore, power utilities face challenge to serve the load demand at minimum operating cost by performing a proper scheduling of the generating units. To perform such a task, unit commitment plays a vital role and significant amount cost is saved per year. In...
This paper presents an L1 adaptive control system for the attitude stabilization of a spacecraft with flexible appendages. The spacecraft model includes uncertain parameters as well as external disturbance torques. The modified Rodrigues parameters are used here to describe the orientation of the spacecraft. The objective is to control the three attitude angle trajectories to the origin, using control...
Cities consume high energy per unit area as a result of rising concentration of population and therefore can play an increasingly crucial role in driving global sustainability. Though integrating energy efficiency and sustainability can prove challenging, the fusion of both objectives is a critical step towards a green future. This paper focuses on building and transportation sectors which have the...
In this paper, a Hopfield Neural Network based reconfiguration algorithm is proposed for power distribution network, in order to reduce losses in the network and increase reliability at the load points. A suitably constructed energy function is minimized to approach the optimal solution of the reconfiguration problem. The proposed approach is tested successfully on IEEE 33 bus distribution test system.
Demand Side Management (DSM) is to be handled in a better coordinated way with the increase in the intermittency of the renewable energy sources (RES) into the power sector. With the implementation of centralized control having its own drawbacks, Microgrids are emerging as a potential entity for managing it efficiently. In this paper, an agent based approach for the implementation of the supply and...
Respiratory rate can be a vital indicator of illness; however, tracking this is a non-trivial process. Phase-based Eulerian Video Magnification (EVM) is an exciting spatiotemporal video processing approach able to reveal subtle breathing motions within video sequences; however, its results are variant to large motions and camera blur. In the case of camera motion, a compensation strategy of stabilizing...
This paper briefly presents a case for a global wind pathfinder mission using the proven coherent DWL technology as a component in a global wind observing strategy that also includes CMV/AMV, OVW, CYGNSS, near-future small sats, etc. The proposed lower energy per pulse/high PRF coherent DWL addresses the challenge of making precise measurements in the presence of clouds.
The societal benefits of understanding climate change through identification of global carbon dioxide sources and sinks led to the desired NASA's active sensing of carbon dioxide emissions over nights, days, and seasons (ASCENDS) space-based missions of global carbon dioxide measurements. For more than 15 years, NASA Langley Research Center (LaRC) have developed several carbon dioxide active remote...
We have discuss in the paper the stability results of tangent & inverse tangent functions using Jungck Ishikawa Iterative scheme. In previous year there have been research papers in which only mathematical explanation for trigonometric functions is discuss but in this paper we have generated Mandelbrot and Julia sets and discuss their characteristics using this iterative scheme.
This paper proposes a new demand-side management (DSM) scheme for autonomous DC microgrid for the future building. The DC distribution system is considered as a prospective system due to the increase of DC loads and DC power sources such as photovoltaic (PV), and battery bank (BB). The BB responds to the changes in power imbalance between PV generation and demand within an autonomous DC microgrid...
This paper presents the concept of the prediction of phasor measurement unit (PMU) data, which are unavailable due to one reason or another at the central control room, using the 3-layered feedforward back-propagation neural network (BPNN). BPNN are used to determine hidden pattern in a process, using the historical data of that process. Work presented in this paper shows that, change in the voltage...
In this paper, a new approach based on an ac power flow method has been developed for congestion management with the help of Flexible AC Transmission System (FACTS) devices in the power system. In this work, Unified Power Flow Controller (UPFC) has been used for study as it is most versatile device in FACTS family. It has been assumed that UPFC was optimally placed based on some existing method. The...
Due to increasing penetration of wind power generation, new challenges are originating from the intermittent nature of wind. Some of the challenges are maintaining frequency stability and output power smoothening. These will necessitate the control of wind turbines in order to maintain the stability rather than extracting the maximum power. This paper proposes a new control scheme for the output power...
Smart distribution grids will be a combination of existing electrical networks controlled by distributed software applications communicating via communication networks. This means that not only the reliability of individual technologies are crucial, but the interoperability is also pivotal for the robustness of the smart distribution network. These individual research areas (electrical network, distributed...
Due to increasing energy demand and introduction of competition in the electricity sectors, the Unit Commitment (UC) has become a challenging task in the power system. In the operational planning of the modern power system UC plays an important role and saves significant amount of the cost per year. In this paper, optimal loading of the generating units is obtained using particle swarm optimization...
Research into the kinematic training of elite divers shows a demand for diver training using biomechanical feedback. With suitable inertial data and tactile feedback, divers and their coaches could better understand their dives and failure modes. This would help improve technique and reduce fatigue during both training and competition, resulting in higher quality dives. We developed the Diving Coach...
This paper presents a compressive introduction to the development of a simulation platform for smart multi-terminal DC micro-grid (sMTdc), this tool will facilitate the development of DC network to support a low-carbon sustainable electricity supply system. The simulation platform uses a compressive set of high-resolution (1-min) sub-models: generation (photovoltaic, wind power), demand (individual...
The paper evaluates new power quality (PQ) indices proposed for economic loss calculation due to poor PQ, for a rural power distribution company. For calculation of economic loss, data is needed from supply side and consumer side as well. In general, accurate data is not available at both sides. And for economic loss calculation due to poor PQ, it becomes necessary to do assumptions of some data....
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