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Smart Grids and Power Systems are becoming more computerized, intelligent and integrated with the cyber world very rapidly. Entering another realm, such as cyber space, poses new threats and issues for modern day power systems. In order to understand these threats, a cyber-power test bed was developed for testing cyber-attacks on an electric power grid system, along with its crucial components and...
The paper presents a general model for energy efficiency calculation, developed with the main purpose of being capable to deal with the fast changes our society faces nowadays. After any energy saving activity, either technological or even behavioral, the model will be able to estimate the energy, which would have been consumed under the supposition that the aforementioned activity was not implemented...
This paper presents brief overview of a program of retrofitting and control of Academic Buildings. The proposed system has the main objective of reduce the energy consumption of lighting systems and air conditioners (A/C), two of the most common loads found in office and/or classroom buildings. The proposed BACS implements a two network technologies, Ethernet to connect a central control unit with...
In this paper a historical perspective of wind energy is discussed. Then, Data from the World Wind Energy Association (WWEA) were used to discuss the technology trends in wind energy. The horizontal axis wind turbine structure, major components, and fundamental of operation of each block was briefly discussed. The tools and techniques used in design and control of large-scale wind turbine were also...
Indonesia is the fourth most populous country in the world with more than 250 million people, it encompasses more than 17,000 islands. Indonesia is geographically located close to the equator and the islands have an abundance of natural resources. Indonesia has become one of the World's biggest coal and natural gas exporters. However, Indonesia struggles to achieve a good balance between energy security,...
The rapid growth of renewable energy calls for large and efficient energy storage system. Storage of photovoltaic and wind electricity in batteries could solve the mismatch problem between the intermittent supply of these renewable resources and variable demand. Most type of battery on the market, known as Solid-electrode batteries maintain discharge at peak power for far too short time to fully regenerate...
Electric utilities in the United States are increasingly employing demand charges and/or real-time pricing. Such directive is bringing potential opportunities in deploying behind-the-meter energy storage (BMES) systems for various grid applications. This study quantifies the techno-economic benefits of BMES in reducing demand charge and smoothing load/generation intermittencies, and determines how...
Interconnection of micro-hydro power plants in isolated mini-grid system is an alternative solution to the electricity supply in the hilly region of Nepal. In the isolated mini-grids, the economic and social impacts due to loss of electricity are of primary concerns to the service provider and end users. This paper presents reliability assessment evaluation of an existing mini-grid in Nepal using...
Electric Vehicles have zero emissions and are hence green and environmentally friendly. A lot of research is being done considering such vehicles at the system level. One of the systems being worked on is CVT (Continuously Varying Transmission). In this paper, an attempt is made to incorporate a CVT system with an electric vehicle. This setup will allow the motor to operate in high-efficiency ranges...
This paper presents a demand response model for a hypothetical microgrid that integrates renewable resources and plug-in electric vehicle (PEV) charging systems. It is assumed that the microgrid has black start capability and that external generation is available for purchase while grid connected to satisfy additional demand. The microgrid is developed such that in addition to renewable, non-dispatchable...
Energy consumption during the process of automotive vehicle production has seen increasing attention with a current world focus on sustainability. Energy analysis helps researchers better understand life cycle energy consumption of vehicles, and assists manufacturers to set effective energy conservation goals. Previous studies have been focusing on the machine-level energy modeling and analysis, but...
There is a rapid growth in wireless communication devices, such as Wireless Sensor Nodes (WSN). While WSN has the abilities of sensing, processing and communication over distances, its abilities are limited by the capacity of its battery. To use the full functionalities of WSN, either the battery needs to replace or recharge in a periodically manner. However both solutions are not convenient for livestock...
We present a novel smart grid concept called Open Access Smart Grids (OASIS). In OASIS, we are developing an integrated framework that models the smart grid as a collection of interdependent electric and cloud services. These services can be dynamically combined and/or purchased, much like in a cloud computing platform, to establish service dependencies between energy producers and consumers. Moreover,...
According to current research, approximately one-third of the world's population is clinically anaemic. Timely screening and treatment can restore personal health and raise health standards nationally and internationally. This study describes the development and testing of non-invasive haemoglobin detection device, designed by Tech4Life Enterprises. The core concept behind the development of the device...
In this paper, a smart grid testbed for electric power distribution system is presented. The hardware system is developed and integrated with appropriate software to monitor various parameters for all connected loads and sources interconnected through communication networks. The real time capability of the system would provide operation and analysis with flexibility and accuracy in all investigations...
In this paper, the modeling of a Phasor Measurement based Wide Area Monitoring and Control System was developed and presented. The proposed system emphasizes the need for monitoring and control of transmission lines connected to Distributed Energy Resources. In this work, the modeling for a complete scenario of a Discrete Fourier Transform based Synchronized Phasor Measurement Unit is presented. The...
Over the years, many research projects have been performed and focused on finding out the effective ways to balance the power demands and supply on the utility grid. The causes of the imbalance could be the increasing demands from the end users, the loss of power generation (generators down), faults on the transmission lines, power tripped due to overload, and weather conditions, etc. An efficient...
Sustainability is one of the main issues of our time. It is a matter of satisfying the present needs without burdening future generations. This affects in particular the three fields of economy, ecology and society. An outstanding challenge is to handle the demographic change and the consequences of an aging society. A social goal is to enable persons with need of care to lead an independent life...
Power satellites may offer a reasonable cost solution to the carbon dioxide build up in the atmosphere linked to global warming. Cost, both for the power and for the startup are major considerations. Cost of power must undercut coal in third world countries to meet the goal of displacing fossil fuel. This leads to a required 100 to one transport cost reduction. We examine methods to reduce the cost...
The uncontrolled climate change is one of the most significant threats to the sustainable development of the human societies. Since the establishment of the Kyoto Protocol in 1997, several models have been proposed to limit the emission of Greenhouse Gases (GHGs) by trying to enforce abiding regulations to the participating countries. One of the successful implementations of such models is the Emission...
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