...assessment of isolated and interconnected generating systems Chowdhury, N.; Billinton, R.; Power Syst. Res. Group, Saskatchewan Univ., Saskatoon, Sask. This paper appears in: Generation, Transmission and Distribution, IEE Proceedings C Issue Date: Mar 1990 Volume: 137 Issue:2 On page(s): 159 - 167 ISSN: 0143-7046 INSPEC Accession Number: 3606872 Date of Current Version: 06 å «æ 2002 Abstract The authors present a technique which includes interruptible loads in the probabilistic assessment of the operating reserve in isolated and interconnected generating systems. This technique is then used to evaluate the magnitude and corresponding maximum allowable time delay of load interruption required to reduce the unit commitment risk in the absence of other capacity adjustments. They also present a probabilistic technique which can be used to evaluate the inherent interruptible load carrying capability of an isolated and interconnected generating system which exists without having to commit any extra units other than those required to carry the firm load. The study provides an insight into load interruption and its effect on the system risk. The techniques developed are illustrated by numerical examples. These techniques can be used in short and medium term operational planning Electric Power Systems Research Volume 18, Issue 2, March 1990, Pages 99–103 Microprocessor based on-line assessment of the operational reliability of a longitudinal power supply...
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...to develop commercially feasible multiphase drive systems. Since the three-phase supply is available from the grid, there is a need to develop a static phase transformation system to obtain a multiphase supply from the available three-phase supply. Thus, this paper proposes a novel transformer connection scheme to convert the threephase grid supply to a five-phase fixed voltage and fixed frequency supply. The proposed transformer connection outputs five phases and, thus, can be used in applications requiring a five-phase supply. Currently, the five-phase motor drive is a commercially viable solution. The five-phase transmission system can be investigated further as an efficient solution for bulk power transfer. The connection scheme is elaborated by using the simulation and experimental approach to prove the viability of the implementation. The geometry of the fabricated transformer is elaborated in this paper. Index Terms—Five phase, multiphase, three phase, transformer, turn ratio. I. INTRODUCTION ULTIPHASE (more than three phase) systems are the focus of research recently due to their inherent advantages compared to their three-phase counterparts. The applicability of multiphase systems is explored in electric power generation [2]–[8], transmission [9]–[15], and utilization [16]–[33]. The research on six-phase transmission system was initiated due to...
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...M13/4/PHYSI/HPM/ENG/TZ1/XX 22136507 Physics higher level PaPer 1 Monday 6 May 2013 (morning) 1 hour INSTRUCTIONS TO CANDIDATES • Do not open this examination paper until instructed to do so. • Answer all the questions. • For each question, choose the answer you consider to be the best and indicate your choice • A clean copy of the Physics Data Booklet is required for this paper. • The maximum mark for this examination paper is [40 marks]. on the answer sheet provided. 2213-6507 18 pages © International Baccalaureate Organization 2013 – 2 – 1. M13/4/PHYSI/HPM/ENG/TZ1/XX The mass of an elephant is 104 kg. The mass of a mouse is 10–2 kg. What is the ratio mass of the elephant ? mass of the mouse A. B. C. D. 10–8 10–6 106 108 2. Two identical balls are dropped from a tall building, one a few seconds after the other. Air resistance is not negligible. As the balls fall, the distance between the balls will A. B. C. D. decrease. increase. increase then remain constant. remain constant. 3. Which of the following is always true for an object moving in a straight line at constant speed? A. B. C. D. No forces act on the object. No resultant force acts on the object. The momentum of the object is zero. No work is being done on the object. 2213-6507 – 3 – 4. M13/4/PHYSI/HPM/ENG/TZ1/XX Object A of mass m is lifted through a height h. Object B of mass 2m is lifted through a height 4h. The gravitational field is constant...
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...Kyle Butler ENG 122 Professor Pushkin March 30th, 2014 Man versus Nature Mankind is steadily depleting the world’s natural resources, which is disastrous for humans and nature. Who wins in the war between man and nature? The answer is no one. However, man cannot survive without using natural resources; therefore, co-existence with nature requires balance. It is man’s primary responsibility to utilize natural resources safely and efficiently. Renewable natural resources such as trees, water, sun and wind ought to be the primary sources of energy. Secondary sources of energy should be non-renewable resources such as oil and natural gas. The government should be required to make use of renewable resources, implement conservation plans and minimize the environmental impact that results from extracting, processing and using natural resources. The first step in co-existing with nature is making use of renewable resources. The federal government should require the state to implement strategies to use renewable energy such as, wind power. Wind power has been used for centuries through the use of windmills, which can pump water, ground grain, and provide electricity for home-use, etc. As stated on Energy.gov, “…small wind electric systems are one of the most cost-effective home-based renewable energy systems – with zero emissions and pollution” (“Small Wind Electric Systems”). Today, wind turbines are used to capture wind, convert it into energy, and then create electricity...
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...power systems are frequently operating under highly stressed and unpredictable conditions because of not only the market-oriented reform of power systems but also the integration of various renewable energy sources. The uncertain factors resulting from the market constraints and the inherent randomness of renewable energy set higher requirements on the reliability of electric networks. This paper presents the reliability assessment of Bangladesh Power System (BPS). Reliability index, loss of load probability (LOLP) of BPS is evaluated using cumulant method. The rationale for using the cumulant method is to take advantage of its computational efficiency. BPS has sixty one generators and a total installed capacity of 5275 MW. The maximum demand of BPS is about 5000 MW. The relevant data of the generators and hourly load profiles are collected from the National Load Dispatch Center (NLDC) of Bangladesh and reliability index ‘LOLP’ is assessed. The simulation results show that the LOLP of BPS is 2.06%. Keywords—cumulant method, convolution, LOLP, forced outage rate, Gram-Charlier series Introduction An electric utility’s main concern is to plan, design, operate and maintain its power supply to provide an acceptable level of reliability to its users. This clearly requires that standards of reliability be specified and used in all three sectors of the power system, i.e., generation, transmission and distribution....
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...ELECTRIC JACQUARDS: THE FIRST HUNDRED YEARS K. Hepworth Department of Textile Industries University of Leeds Leeds LS2 9JT 1 Introduction. The recent widespread use of computers and colour monitors in the representation and development of weave structures and in the simulation of colour-and-weave effects has encouraged loom manufacturers to complete the chain of automation of fabric production by developing computer-controllable shedding mechanisms. These mostly take the form of electromagnetically actuated dobbies, although some jacquards are also available. Although activity in this field has accelerated during the past twenty years or so there is a history of over a hundred and thirty years of development of electric jacquards for weaving. It is apparent that almost as soon as the jacquard was established there was a desire to reduce the bulk and weight of the punched cards used for programming it and the expense of punching, linking and storing them. By 1833 a two-stage mechanism had been described that enabled a continuous band of paper to be substituted for the cards but punching was still needed. By the middle of the century an electrically conductive program, on which areas could be obscured by insulating paint, was being proposed in conjunction with electromagnetic methods of hook selection and at least one demonstrably operable machine resulted. By the end of the century photographically prepared programs of a similar kind were being proposed albeit with a somewhat...
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...Saqlain Saleem Ernest Tix Eng 1301 CRN 12653 14 October 2012 Muscle Building Bars Being a full time student and having a full time job can be tough on the body, with all the long shifts and extensive lectures, it can become very difficult to stay away from junk food and instead eat healthy food. Building some muscle can be even tougher of a task, because it requires eating a surplus amount of calories burnt, in 5 to 6 meals a day. Sitting down with the family six times a day and having a fresh cooked meal isn’t realistic, for which I made my own homemade protein bars, perfect for anytime when hungry or in need of a meal. First thing needed is for you to do, is make a list of all the ingredients needed for the recipe, if anything is missing you would need to go to the grocery store or the supplement store to buy, these will most likely be items like 70% dark chocolate, Whey protein powder, everything else you should be able to find in the food pantry. Starting off grab a large bowl for the dry ingredients inside which place: two cups of natural whole grain oats, one cup of 100% Whey protein powder, a third cup of dry raisins or cranberries, a forth cup of slivered almonds and a teaspoon of cinnamon powder. Then mix all the ingredients with a spatula. Next grab a smaller bowl inside which place: half a cup of natural peanut butter, a fourth cup of agave nectar or honey, half a cup of almond milk, a fourth cup of 70% dark chocolate and a teaspoon of vanilla extract. ...
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...Alfred J Haines Eng 215 Dr. Melissa Olt Research Paper Dec. 18, 2011 Abstract The Man Machine Love-Hate relationship is examined and the eventual blending of the two to create an augmented form of reality. The problems with such a task are not only with the hardware but with the Human sense of spiritual bonding to the past. A past imbued with fear, pain and hardship, a meta-ethnic past that some long for and believe to have been a simpler time. The Personal Computer will someday become an invisible extension of our minds with no peripherals nor external hardware to obstruct the users from achieving their creative goals. From its beginning mechanical computers have frightened Humans who believed that they would be replaced by these thinking machines. The human beings mechanical mobility has evolved out of our spirits need to interact with the universe and the next step, the one that frees mankind from physical limitations will be the use of machines that will be ubiquitous, in effect, working as natural extensions of the body. The continuous innovations in electronics are making more and more components ubiquitous. The convergence of man and machine requires that computers become an integral part of the human body. The hurdles are many and those in opposition of such a world are afraid that these changes can only come about with the sacrifice of the soul. The last huddle that will stand in mans way of a true Man-Machine interface may well be one of posed by the...
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...Hamilton Sundstrand Organizational Change Project Leadership and Organizational Behavior Joseph Plumley 12/13/2010 Hamilton Sundstrand is a global corporation that designs, manufactures and supports aerospace and industrial products for worldwide markets. It is a subsidiary of United Technologies Corporation headquartered in Windsor Locks, Connecticut, US. UTC provides a broad range of high-technology products and support services to the building systems and aerospace industries. Recently, the corporation has been ranked number one in the Aerospace and Defense industry rankings on Forbes Most admired companies list. Among other business units of UTC are Carrier Corporation, Otis Elevator Company, Pratt & Whitney, Sikorsky Aircraft, UTC Fire & Security and UTC Power. Hamilton Sundstrand roots all the way back to 1905. From the early days, the company's legacy product includes machine tools for manufacturing, early aircrafts parts and a unique 10-key adding machine before calculator was available. The company provided propellers for United States and the allies in World War II with rapid production to meet the department of defense needs. The company has about 16, 400 employees located at 150 facilities in 20 countries around the world with key focus on expanding their operation in emerging nations. To maintain their comparative and absolute advantage in vast aerospace technological field the company spends nearly $1 billion a year on engineering and development...
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...The Legacy of Dr. Kaoru Total Quality Management Instructor: Marsha Boyle 5/15/2010 The Legacy of Dr. Kaoru Ishikawa Dr. Kaoru Ishikawa was a Japanese consultant and father of the scientific analysis of causes/ problems in industrial processes. The purpose of this paper is to recognize the life works and address the impacts of Dr. Kaoru Ishikawa’s works on the world. The focus will help the reader understand his background, key ideas, influence on quality practices, and the correlation to total quality management (TQM). Dr. Kaoru Ishikawa was born in 1915 and died in 1989 (Lindsay & Evans, 2007). He was born in Tokyo and was the eldest of eight sons by Ichiro Ishikawa (Business and Companies). In 1943 Ishikawa graduated from the Engineering department at the University of Tokyo with a major in applied chemistry (De La Salle University, 2002). According to Business and Companies, “His first job was as a naval technical officer (1939-1941) then moved on to work at the Nissan Liquid Fuel Company until 1947. Later that year he was made assistant professor at his Alma Mater. He later received his Doctorate of Engineering and was promoted to professor and worked at the university for many years (De La Salle University, 2002). Ishikawa was also on the editorial review board for the Japanese journal: Quality Control for Foremen (Lindsay & Evans, 2007). The quality guru also presented some key ideas which had a major impact on Quality Control. Two of his...
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...A PAPER ON “SMART MATERIALS:A NEW TREND IN TECHNOLOGY” PRESENTED BY, SAHIL G. GOVINDWAR. . govindwar.sahil@gmail.com Contact No: 7709575108. BABASAHEB NAIK COLLEGE OF ENGINEERING, CIVIL ENGINEERING DEPARTMENT. PUSAD. . CONTENTS . Sr. No. | Title | Page No. | 1 | Abstract | 1 | 2 | Introduction | 1 | 3 | Classification | 2 | 4 | Advantages and Disadvantages | 4 | 5 | Applications | 5 | 6 | The future | 5 | 7 | Conclusion | 6 | ABSTRACT P.V.P Siddhartha instate of technology ramesh_612@yahoo.c ABSTRACT This paper will provide an overview of the smart materials. The various types of smart material are also presented in this paper. To get the clear idea about the smart materials, its definition and types are explained briefly. Some of the types of these include piezoelectric materials, magneto-rheostatic materials, electro-rheostatic materials, and shape memory alloys piezoelectric, Varieties of smart materials already exist, and research is being carried out extensively to derive new materials. Applications of various types...
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...MBA LEARN MORE, DO MORE, BECOME MORE 90 exceptional people who will shape the future of business The IMD MBA Class of 2011 Developing your future global leaders The IMD difference Why recruit at IMD? Find truly global experienced leaders able to address your company’s challenges in today’s complex environment 90 talented pre-screened participants Besides strong academic ability, we assess the leadership potential with a focus on real management capacity in a multi-cultural and complex environment. In total we spend at least 10 manhours per candidate to make sure each one is right for the program. The admission process consists of: - an online application with 12 essays - letters of recommendations - a full day assessment center Once accepted, each candidate goes through a full background check conducted by an independent agency. International and experienced In a class of 90, you will find 40+ different nationalities and 90% of the participants will have spent at least 6 months outside their home country. With a minimum of 3 years of work experience, our participants have on average 7 years of experience prior to IMD. Trained to become truly global hand-on leaders Besides strong academic business fundamentals, our intensive one-year program is designed to constantly push our MBAs beyond their comfort zone. A diversity of hands-on projects takes them through various settings: - a 6-week startup project - a 9-week international consulting project with medium to...
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...New Technology in the Trucking Industry Sheila Hanson Southern New Hampshire University English Composition II (Eng.123) Professor McIntyre December 15, 2014 New Technology in the Trucking Industry Drivers who travel the interstate have shared the road with an 18 – wheeler, which incorporates a large portion of the transportation service industry (also known as the trucking industry), and have witnessed firsthand new technology working not only to protect the driver but you as well. New technology is defined as the specific methods, materials, and devices used to solve practical problems. Research has shown that new technology has been both helpful and harmful in changing the trucking industry, but was needed. The electronic log, an electronic clearance system (also called PrePass), and the on-board computer (also called EOBRs which stands for Electric On-Board Recorder) are some of the new technologies implemented by the trucking industry that are designed to improve safety, productivity, and help the trucking industry keep up with the changes of the manufacturing and distribution industry's choice to keep a lower level of inventory on hand by using the just-in-time business practice. The following table illustrates the major changes to the trucking industry by Congress that required new technology, in order for the trucking industry to comply with the new regulation. Table 1-History of Changes in the Trucking Industry Date | Event | 1935 | Congress passed the...
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...Instructor Wenrich Eng. 121 7 June 2015 Research Narrative “Okay, so I get to wake up today and have another day he doesn’t.”- Dave Grohl, band member of Nirvana What would music have been like in the 1990s without Kurt Cobain? Or maybe the question to ask is, “What would music be like today if Kurt Cobain was alive?” The grunge movement was brought to life by the front man of the band Nirvana, Kurt Cobain (Kurt and Courtney).He was what most believed to be an iconic man in the 1990s for the music genre known as alternative rock/grunge. Kurt Cobain passed away on April 5th, 1994, in his home, when he was only 27 years old (“April 05”). He recently started a family with his wife Courtney Love, who was also a musician in a band called Hole (Kurt and Courtney). Kurt was in and out of rehabilitation centers for his drug addiction, and soon before his death had, what people considered at the time, an accidental overdose in Rome. The day his corpse was found an electrician reports his findings. The police and fire department arrive. Pictures are taken of the scene, and then handed to detectives to enhance the report of the incident that took place on the street of Lake Washington Boulevard. As news spreads of the musician’s tragedy fans gather at his house and a memorial service is performed in his honor (Kurt and Courtney). I now tell you the story of how and when Kurt Donald Cobain’s body was found. An electrician, Gary Smith, from the company Veca Electric arrives at the...
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...International Journal of Chemical Sciences and Applications ISSN 0976-2590. Vol 3, Issue 1, 2012, pp 232-240 http://www.bipublication.com SIMULATION OF BIOMASS GASIFICATION REACTOR FOR FUEL IN GAS TURBINE Ratnadip R Joshi1, B D Kulkarni2 1 Dept. of Petrochemical Engineering, MAEER's Maharashtra Institute of Technology, Paud Road, Pune. PIN 411038 Maharashtra, India. 2 Distinguished Scientist, National Chemical Laboratory, Pune, India. 1 Corresponding author: Email: ratnadip.joshi@mitpune.edu.in, Tel: +91-9423332754; ABSTRACT Energy produced from biofuels or there conversion products represent an important part among today’s energy sources. As biofuels are renewable, abundant and has domestic usage, the sources of biofuels can help the world reduce its dependence on petroleum products and natural gas. Biofuels can be converted into liquid, solid and gaseous fuels with the help of some physical, chemical and biological conversion processes. The conversion of biofuel material has a precise objective to transform a carbonaceous solid material, which is originally difficult to handle, bulky and of low energy concentration, into fuels having physico-chemical characteristics that permit economic storage and transferability through pumping systems. The use of biofuel products provides substantial benefits as far as the environment is concerned. A simulation study has been carried out to arrive at the power output under limiting conditions as well as perform...
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