Дисертації з теми "Load schedule"
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Aula, Mercy, and Ken Silver. "Evaluation of Tomato Farmworker Ergonomics using Electromyography." Digital Commons @ East Tennessee State University, 2019. https://dc.etsu.edu/asrf/2019/schedule/150.
Повний текст джерелаЮнак, Р. М. "Реконструкція підстанції 330 кВ "Суми"". Master's thesis, Сумський державний університет, 2018. http://essuir.sumdu.edu.ua/handle/123456789/71371.
Повний текст джерелаСтанішевська, Діана Віталіївна. "Управління електричним навантаження промислових підприємств з використанням споживачів-регуляторів". Master's thesis, КПІ ім. Ігоря Сікорського, 2020. https://ela.kpi.ua/handle/123456789/38390.
Повний текст джерелаThe analysis of the current state of the electric load modes and the composition of the generating power of the UES is carried out. The ranking of methods of control of energy consumption regimes according to the degree of influence for the structural levels of the regional electric power system with the use of statistical research methods is performed. A method of discrete control of consumers using the method of network planning and management has been developed. The method of control of level of energy efficiency in the industry is offered.
Савицкий, Сергей Михайлович. "Усовершенствование энергоэффективности электрических сетей за счет управления электропотреблением для отопления в административных зданиях". Thesis, НТУ "ХПИ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/22729.
Повний текст джерелаThe dissertation for degree of technical sciences candidate by specialty 05.14.02 – power plants, networks and system. – National Technical University "Kharkіv Polytechnic Institute", Kharkіv 2016. The thesis is devoted to scientific substantiation and scientific problem solving for the creation and development of electric load management in electric heating systems for alignment of the LEG, as well as the synthesis of energy-saving automatic power management system of the consumer-regulator with the prediction. The thesis discussed the methods of synthesis of the automated energy management systems in administrative buildings with electrical heating to improve the energy efficiency of generation and consumption of electric energy processes by reducing the overall costs. The basis of the electrical load control method is based on the pulse input mode which shifts the spectrum of power consumption schedule at ultralow frequencies covered by nuclear power plants, as well as predicting the energy input and heat loss. The methods and algorithms for electrical load management controllers for consumers to compensate for their greater inertia by predicting the state of the control object and generate the compensating effects. A consumer-regulator control method using the control action of the form as a step function without taking into account the heat losses and taking into account the heat loss, as well as substantiated by consumers control method controls with distributed parameters with the use of pulse-width control. Studied and shown the method of determining the duration of the transient stability control systems and distributed systems. The paper has been sown the potential economic effect of leveling the schedule of electric load due to the introduction of load control system of the consumer-regulator in the form of heat in the administrative building.
Савицький, Сергій Михайлович. "Удосконалення енергоефективності електричних мереж за рахунок управління електроспоживанням для опалення в адміністративних будівлях". Thesis, НТУ "ХПІ", 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/22728.
Повний текст джерелаThe dissertation for degree of technical sciences candidate by specialty 05.14.02 – power plants, networks and system. – National Technical University "Kharkіv Polytechnic Institute", Kharkіv 2016. The thesis is devoted to scientific substantiation and scientific problem solving for the creation and development of electric load management in electric heating systems for alignment of the LEG, as well as the synthesis of energy-saving automatic power management system of the consumer-regulator with the prediction. The thesis discussed the methods of synthesis of the automated energy management systems in administrative buildings with electrical heating to improve the energy efficiency of generation and consumption of electric energy processes by reducing the overall costs. The basis of the electrical load control method is based on the pulse input mode which shifts the spectrum of power consumption schedule at ultralow frequencies covered by nuclear power plants, as well as predicting the energy input and heat loss. The methods and algorithms for electrical load management controllers for consumers to compensate for their greater inertia by predicting the state of the control object and generate the compensating effects. A consumer-regulator control method using the control action of the form as a step function without taking into account the heat losses and taking into account the heat loss, as well as substantiated by consumers control method controls with distributed parameters with the use of pulse-width control. Studied and shown the method of determining the duration of the transient stability control systems and distributed systems. The paper has been sown the potential economic effect of leveling the schedule of electric load due to the introduction of load control system of the consumer-regulator in the form of heat in the administrative building.
Савченко, Наталя Панасівна. "Регулювання графіка навантаження електричних мереж за допомогою споживача-регулятора з кінетичним енергонакопичувачем". Thesis, Донбаська національна академія будівництва і архітектури, 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/37646.
Повний текст джерелаThesis for the degree of candidate of technical sciences in specialty 141 – electric power industry, electrical engineering and electromechanics – National Technical University "Kharkov Polytechnic Institute" of the Ministry of Education and Science of Ukraine, Kharkov, 2018. The thesis is devoted to regulation of electric load schedules with the help of regulator consumers to connect kinetic energy storages to their power supply system, which will lead to an increase in the efficiency of the functioning of electrical networks and power quality indicators. In the dissertation the methods of regulation of electronic loading schedules are investigated and the feasibility of using administrative buildings with storage devices connected to the power supply system, as consumers of regulators, is substantiated. The application of different types of accumulating devices in power supply systems has been investigated, and the use of a kinetic energy carrier for regulating load schedules of the consumer-regulator has been proposed. The analysis of risk assessment methods in energy with the purpose of their reduction, which will increase the reliability of the power supply system of the consumer-regulator, and the method of the hierarchy of T.Saati is used directly for the analysis of risks and their compensation when connected to the system of power supply of the kinetic energy accumulator. The design of the flywheel with a variable torque of inertia and imbalance loads, which differs from the existing presence of alternating moment of inertia and imbalance loads, which will reduce the energy consumption in the initial period of rotation of the flywheel and improve the smoothness of rotation in the working mode is developed, therefore, it has the best technical characteristics compared with analogues and can be used as a kinetic energy storage device. The method of balancing the load in the power supply system of an administrative building, based on the use of kinetic energy storage, has allowed to improve the quality of electricity due to the lack of switching in the power supply system. A model for energy exchange between the power supply system of the building and the kinetic energy storage device is developed, which differs from the current taking into account the design of the flywheel KES, which makes it possible to improve the accuracy of energy calculations. The possibility of regulating the electric load graphs of the consumer-regulator is shown when adjusting the parameters and characteristics of the kinetic energy storage, which will effectively regulate the load schedule of the electrical network as a whole. The influence of the design of the electric motor and the flywheel structure in the KEN on the accumulation of electric energy on the acceleration and loading characteristics of the drive for controlling the electric load schedule of the electric networks has been experimentally confirmed.
Савченко, Наталя Панасівна. "Регулювання графіка навантаження електричних мереж за допомогою споживача-регулятора з кінетичним енергонакопичувачем". Thesis, НТУ "ХПІ", 2018. http://repository.kpi.kharkov.ua/handle/KhPI-Press/37633.
Повний текст джерелаThe thesis is devoted to regulation of electric load schedules with the help of regulator consumers to connect kinetic energy storages to their power supply system, which will lead to an increase in the efficiency of the functioning of electrical networks and power quality indicators. In the dissertation the methods of regulation of electronic loading schedules are investigated and the feasibility of using administrative buildings with storage devices connected to the power supply system, as consumers of regulators, is substantiated. The application of different types of accumulating devices in power supply systems has been investigated, and the use of a kinetic energy carrier for regulating load schedules of the consumer-regulator has been proposed. The analysis of risk assessment methods in energy with the purpose of their reduction, which will increase the reliability of the power supply system of the consumer-regulator, and the method of the hierarchy of T.Saati is used directly for the analysis of risks and their compensation when connected to the system of power supply of the kinetic energy accumulator. The design of the flywheel with a variable torque of inertia and imbalance loads, which differs from the existing presence of alternating moment of inertia and imbalance loads, which will reduce the energy consumption in the initial period of rotation of the flywheel and improve the smoothness of rotation in the working mode is developed, therefore, it has the best technical characteristics compared with analogues and can be used as a kinetic energy storage device. The method of balancing the load in the power supply system of an administrative building, based on the use of kinetic energy storage, has allowed to improve the quality of electricity due to the lack of switching in the power supply system. A model for energy exchange between the power supply system of the building and the kinetic energy storage device is developed, which differs from the current taking into account the design of the flywheel KES, which makes it possible to improve the accuracy of energy calculations. The possibility of regulating the electric load graphs of the consumer-regulator is shown when adjusting the parameters and characteristics of the kinetic energy storage, which will effectively regulate the load schedule of the electrical network as a whole. The influence of the design of the electric motor and the flywheel structure in the KEN on the accumulation of electric energy on the acceleration and loading characteristics of the drive for controlling the electric load schedule of the electric networks has been experimentally confirmed.
Драбик, Владислав Русланович, та Drabyk Vladyslav. "Проект енергоефективної системи електропостачання кормоцеху". Master's thesis, ЗМІСТ ВСТУП 7 1 АНАЛІТИЧНА ЧАСТИНА 9 1.1 Загальна характеристика господарства ТОВ «Агрокорм» 9 1.2 Аналіз і оцінка заходів електрозбереження та вирівнювання добового графіка електричних навантажень промислових підприємств 11 1.3 Оптимізація добового графіка електричного навантаження 16 2 НАУКОВО-ДОСЛІДНА ЧАСТИНА 20 2.1 Оптимізація показників добового графіка електричного навантаження кормоцеху 20 2.1 Оптимізація показників добового графіка електричного навантаження кормоцеху 25 3 ТЕХНОЛОГІЧНА ЧАСТИНА 29 3.1 Розрахунок електричних навантажень силової мережі кормоцеху 29 3.2 Розрахунок освітлювальної мережі 34 3.3 Розрахунок і вибір пускозахисної апаратури силових і освітлювальних мереж 39 3.3.1. Вибір пускозахисної апаратури для силового устаткування 39 3.3.2 Вибір пускозахисної апаратури для освітлювального обладнання. 41 3.3.3 Перевірка на узгодження струмів уставок ПЗА і тривало допустимих струмів провідників. 41 4 ПРОЕКТНО-КОНСТРУКТОРСЬКА ЧАСТИНА 45 4.1 Розробка системи електропостачання кормоцеху 45 4.1.1 Визначення розрахункової потужності на введенні. 45 4.1.2 Вибір коефіцієнта потужності. 50 4.1.3 Вибір трансформаторної підстанції 51 4.1.4 Вибір проводу і розрахунок мережі 0,4 кВ на падіння напруги. 52 4.2 Вибір лічильників для обліку електроенергії 53 6 4.2.1 Багатофункціональний лічильник електричної енергії серії SL7000 Smart 54 4.3 Заходи по компенсації реактивної потужності у кормоцеху 57 4.4 Перевірка вибраної пускозахисної апаратури кормоцеху на автоматичне спрацьовування і селективність роботи 59 4.4.1 Розрахунок струмів короткого замикання 59 4.4.2 Перевірка ПЗА на автоматичне спрацьовування і відключаючу здатність 62 5 СПЕЦІАЛЬНА ЧАСТИНА 65 5.1 Інтегрована модель графіка електричного навантаження кормоцеху з врахуванням споживачів-регуляторів 65 5.2 Дослідження графіка електричного навантаження кормоцеху 67 5.3 Порівняння показників графіка електричного навантаження кормоцеху до і після блоку оптимізації 71 6 ОБГРУНТУВАННЯ ЕКОНОМІЧНОЇ ЕФЕКТИВНОСТІ 74 Економічна ефективність роботи кормоцеху при різних тарифних системах (диференційованих по зонах доби) оплати електричної енергії 74 7 ОХОРОНА ПРАЦІ ТА БЕЗПЕКА В НАДЗВИЧАЙНИХ СИТУАЦІЯХ 82 7.1 Заходи безпеки при роботі кормоцеху ТОВ “Агрокорм” 82 7.2 Розрахунок захисного заземлення 85 7.3 Загальні положення з евакуації при виникненні надзвичайної ситуації 89 8 ЕКОЛОГІЯ 92 8.1 Аналіз впливу виробничих дій підприємства на довкілля 92 8.2 Заходи і засоби захисту довкілля від викидів підприємства 94 ЗАГАЛЬНІ ВИСНОВКИ ДО ДИПЛОМНОЇ РОБОТИ 96 ПЕРЕЛІК ПОСИЛАНЬ 98, 2019. http://elartu.tntu.edu.ua/handle/lib/29598.
Повний текст джерелаIn diploma work the project of the energy-efficient system of power supply to feeding room of industrial enterprise of LTD «Agrofeed» is carried out and events that is sent to electro-maintenance and smoothing of day's load-graph are considered. The decided basic questions are from a power supply and defence of power energy-efficient electrical equipment to feeding room. The onetransformer is chosen KTS 250-10/0.4 kV. Conducted calculation of the lighting loading on the base of modern light-emitting-diode industrial lamps of Highbay 200. Also, conducted calculation of currents of short circuit, a protective and interconnect apparatus is checked for a sensitiveness to the currents of short circuit, on an automatic wearing-out and disconnecting ability. Smoothing of unevenness of chart of the electric loading came true due to optimization of basic criteria of model of optimization: dispersion of chart of the electric loading diminished on 26,4%, a fillfactor increased and the coefficient of maximum diminished.
Yao, Enxin. "Optimization of energy consumption schedule of residential loads and electric vehicles." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/58302.
Повний текст джерелаApplied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate
Rahman, Imran. "Electrical Load Disaggregation and Demand Response in Commercial Buildings." Diss., Virginia Tech, 2020. http://hdl.handle.net/10919/96602.
Повний текст джерелаDoctor of Philosophy
Electrical power systems consist of a large number of power generators connected to consumers through a complex system of transmission and distribution lines. Within the electric grid, a continuous balance between generation and consumption of electricity must be maintained., ensuring stable operation of the grid. When electricity demand is high, Demand Response (DR) is a method that can be used to reduce user loads, restoring the balance between demand and supply of electricity. Based on data from the Energy Information Administration (EIA), half of all commercial buildings in the US measure 5,000 square feet or smaller in size, whereas the majority of the other half is made up of medium-sized commercial buildings measuring in at between 5,001 to 50,000 square feet. This makes these commercial buildings an ideal target for participating in DR. In this dissertation, two broad solutions for commercial building DR have been presented. The first is a load disaggregation technique, where power consumption and activity of individual HVACs can be obtained, using a single power meter. The second work focuses on a DR algorithm, that controls single floor HVAC and lighting loads in a commercial building, based on a user generated bid price for electricity, user preferences and load priorities, when electricity demand is at its peak.
Черкашина, Галина Ігорівна. "Підвищення енергоефективності системи електропостачання за рахунок управління електричним навантаженням у побутовому секторі". Thesis, НТУ "ХПІ", 2015. http://repository.kpi.kharkov.ua/handle/KhPI-Press/17133.
Повний текст джерелаThe dissertation for the degree of technical sciences candidate by specialty 05.14.02 – power plants, networks and systems. – NTU "KhPI". – Kharkiv, 2015. The dissertation is devoted to theoretical substantiation and scientific problem solution concerning designing techniques of residential consumers’ electric load management. The techniques are brought to the stage of practical application to result in electric load leveling and power supply mode balancing in the residential sector. To solve this problem, a new residential power supply scheme is worked out with the ability to control the load assigned. The type and the main characteristics of household consumers-regulators are specified to allow controlling them through the day. Household consumers’ motivation for rendering of the "regulation services" is based on a proposed payment methodology taking into account participation in the load management. The overall effect of the electric load leveling based on the developed load management techniques within the United Power System of Ukraine is assessed and compared with the introduced management system cost to show the economic expediency of its implementation.
De, Palma Giuseppe. "Serverless Computing Platforms with Customizable Load Balancers." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/20752/.
Повний текст джерелаЧеркашина, Галина Ігорівна. "Підвищення енергоефективності системи електропостачання за рахунок управління електричним навантаженням у побутовому секторі". Thesis, НТУ "ХПІ", 2015. http://repository.kpi.kharkov.ua/handle/KhPI-Press/17119.
Повний текст джерелаThe dissertation for the degree of technical sciences candidate by specialty 05.14.02 – power plants, networks and systems. – NTU "KhPI". – Kharkiv, 2015. The dissertation is devoted to theoretical substantiation and scientific problem solution concerning designing techniques of residential consumers’ electric load management. The techniques are brought to the stage of practical application to result in electric load leveling and power supply mode balancing in the residential sector. To solve this problem, a new residential power supply scheme is worked out with the ability to control the load assigned. The type and the main characteristics of household consumers-regulators are specified to allow controlling them through the day. Household consumers’ motivation for rendering of the "regulation services" is based on a proposed payment methodology taking into account participation in the load management. The overall effect of the electric load leveling based on the developed load management techniques within the United Power System of Ukraine is assessed and compared with the introduced management system cost to show the economic expediency of its implementation.
Dunn, Michael S. "Asymmetric Non-Uniform Proportional Share Scheduling." Ohio University / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1282313314.
Повний текст джерелаKalaichelvan, Niranjanan. "Distributed Traffic Load Scheduler based on TITANSim for System Test of a Home Subscriber Server (HSS)." Thesis, KTH, Skolan för informations- och kommunikationsteknik (ICT), 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-50066.
Повний текст джерелаSystemet test är mycket betydelsefullt i utvecklingen livscykeln för ett telenät nod.Verktyg som TITANSim används för att utveckla testet ram på vilken ett belastningsprov program skapas. Dessa verktyg måste vara mycket effektiv och optimerad för att minska kostnaderna för systemet testet. Detta examensarbete skapat ett program belastningsprov bygger på distribuerad schemaläggning arkitektur TITANSim, där flera användare kan simuleras med hjälp av ett enda test komponent. Det nya distribuerade schemaläggning systemet minskar kraftigt antalet operativsystem inblandade system processer, vilket minskar minnesförbrukning av lasten testprogram, därav högre belastningar kan enkelt simuleras med begränsade hårdvara resurser. Lasten testa program som används för systemtest av HSS är baserad på den centrala schemaläggning arkitektur TITANSim. Den centrala schemaläggning arkitektur är ett funktionstest koncept, där varje användare simuleras med ett enda test komponent. I systemet testa flera tusen användare är simulerade av testsystemet.Därför använder belastningen program baserat på centrala schemaläggning arkitektur tusentals testa komponenter leder till hög minnesförbrukning i testsystemet.I denna arkitektur är schemaläggning av test komponenter centraliserad vilket resulterar i en mycket kommunikation overhead inom testsystem, som tusentals testa komponenter kommunicerar med en mästare schemaläggning komponent under testexekvering. Å andra sidan, i den distribuerade schemaläggning arkitekturen schemaläggning uppgiften utförs lokalt av varje test komponent. Det finns ingen kommunikation overhead i testsystemet. Därför är testsystemet mycket effektiv. I distribuerad schemaläggning arkitekturen trafikflödet av simulerade användare beskrivs med Finite State Machines (FSMs). Den FSMs anges i konfigurationsfiler som används av testsystemet vid körning. Därför genomföra trafiken fall med distribuerad schemaläggning arkitektur blir enklare och snabbare eftersom det inte finns någon (TTCN-3) kodning / sammanställning. HSS är den enda nod (inom Ericsson) vars system test utförs med hjälp av den centrala schemaläggningen arkitektur TITANSim. Den andra användare (noder) i TITANSim använder distribuerad schemaläggning arkitektur för sina uppenbara fördelar. Under denna omständighet, förutsätter detta examensarbete betydelse för HSS. När ett beslut att anpassa distribuerad schemaläggning arkitektur är gjord för systemet test av HSS, kan belastningen program som skapats i detta examensarbete kan användas som en modell, eller förlängas för migration av testet moduler för HSS från den centrala schemaläggningen arkitektur för distribuerade schemaläggning arkitektur. Genom att skapa denna belastning ansökan har vi fått stor kunskap om TITANSim ramen, viktigast av allt, de nödvändiga ändringar av TITANSim ramverk som krävs för att skapa en distribuerad schemaläggning arkitektur baserad belastning ansökan för HSS. Lasten program som skapats för detta projekt har använts för att (system) testa HSS genom att generera last använda riktiga maskinvarusystem test. Resultaten analytiskt jämfört med provresultaten från den befintliga belastningen ansökan (som är baserad på den centrala schemaläggning arkitektur). Analysen visade att belastningen ansökan baseras på distribuerad schemaläggning arkitektur är effektiv, använder mindre resurser testsystem, och kan skala upp kapaciteten last generation
Anuebunwa, Ugonna R. "Behavioural Demand Response for Future Smart Homes: Investigation of Demand Response Strategies for Future Smart Homes that Account for Consumer Comfort, Behaviour and Cybersecurity." Thesis, University of Bradford, 2018. http://hdl.handle.net/10454/17359.
Повний текст джерелаHradečný, Štěpán. "Stavebně technologický projekt polyfunkčního domu, Staré Brno." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2018. http://www.nusl.cz/ntk/nusl-372235.
Повний текст джерелаReeves, Ashleigh, Christopher Gregg, Michael K. Lindell, Timothy A. Joyner, and Bruce Houghton. "Resident stakeholder perceptions of lava flow hazard diversion strategies and protective measures for infrastructure and commercial and private property on Kīlauea and Mauna Loa volcanoes, Hawai‘i." Digital Commons @ East Tennessee State University, 2018. https://dc.etsu.edu/asrf/2018/schedule/25.
Повний текст джерелаVaristeas, Georgios. "Effective cooperative scheduling of task-parallel applications on multiprogrammed parallel architectures." Doctoral thesis, KTH, Programvaruteknik och Datorsystem, SCS, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-175461.
Повний текст джерелаQC 20151016
Růžička, Radek. "Příprava realizace bytového domu v Brně - Modřicích." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2019. http://www.nusl.cz/ntk/nusl-391883.
Повний текст джерелаMartinez, John Brett. "Credit card credit scoring and risk based lending at XYZ Credit Union." CSUSB ScholarWorks, 2000. https://scholarworks.lib.csusb.edu/etd-project/1752.
Повний текст джерелаFagerblom, Albin, and Patryk Kulak. "Tidplanering – En fallstudie som jämför traditionella metoder och BIM-baserade metoder." Thesis, Tekniska Högskolan, Jönköping University, JTH, Byggnadsteknik och belysningsvetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-50178.
Повний текст джерелаPurpose: Today there is big room for improvements in the work with logistics and scheduling on construction sites. Increased complexity has led to increased demands on planning. However, studies have shown that construction is one of the least digitalised industries today, in spite of all tools available. The purpose of the study is to study the advantages of using BIM in the work with logistics and scheduling compared to the traditional methods available, and in that way see how this increase efficiency. Method: The research methods that was chosen to answer our issue are case studies and literature studies. Those methods are the best suited for these types of studies that are going to be done. Collection of data has been made through qualitative interviews with employees at Gärahovs Bygg AB. Findings: The study has shown that the interviewees believe that communication between different participants in the project can be improved using the BIM-based method. They also believe that it will be easier to see that everything is included in the planning phase. The benefit of using BIM: • The BIM method can provide a visual advantage in the communication between contractors and subcontractors. • The BIM method can give a clearer picture of how the work will proceed through visual simulations. • The BIM method can make it easier to see if all the planned activities are included in the planning phase. • The BIM method can make it easier to make reconciliations against the schedule during the project. Limitations: The study is limited to only make a production schedule over one typeapartment in a project, and to only make comparisons with this. The study has only been made together with one company. For a more reliable result, more companies would have to be included in the study. A simulation of a larger model could have given an even clearer picture of what advantages and disadvantages that comes with the BIM-based method.
Pohl, Lukáš. "Robustní řízení elektrických pohonů." Doctoral thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2015. http://www.nusl.cz/ntk/nusl-233684.
Повний текст джерелаKondáš, Ondřej. "Polyfunkční dům Brno, Černovice - stavebně technologický projekt." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2017. http://www.nusl.cz/ntk/nusl-265233.
Повний текст джерелаЧекамова, Вікторія Вікторівна. "Керування режимами споживання електричної потужності в електроенергетичній системі". Master's thesis, КПІ ім. Ігоря Сікорського, 2018. https://ela.kpi.ua/handle/123456789/28988.
Повний текст джерелаActuality of theme. To date, consumer demand for electricity is uneven. This leads to a decrease in the reliability and efficiency of the functioning of the grid, as well as the deterioration of the quality of electric energy. In connection with this, there is a need to regulate the demand of consumers for electric power. The necessity of the periodic application of administrative constraints on consumer demand for electricity was the fact that the energy sector of Ukraine was scarce at different times. This is explained by the fact that, on the one hand, there is insufficient amount of fuel at power plants, and on the other hand - physical deterioration of a significant amount of generating equipment of the power plant, as well as electric networks. The unfavorable structure of generating capacities was caused by the fact that in the united system of Ukraine there is a serious shortage of electric power. It is understood that Ukraine's energy system is insufficiently equipped with the required number of maneuvering blocks, which, in turn, can quickly enter the operating mode of hot or cold reserves, and also change the amount of electric power produced in a wide range. Therefore, the quality of electric energy, as well as the reliability of ensuring the demand of consumers for electric power, becomes an increasingly complex task for the Ukrainian energy sector. It is known that there are different methods and methods for controlling demand for electric power, the main of which are methods of structural and technological management, administrative and legal methods, economic and organizational. If we consider structural and technological methods, then we are talking about the unloading of the power system in emergency situations or the dipole of electric power. For this purpose, it would be advisable to increase the number of maneuvering capacities in the UES of Ukraine, namely the construction of new hydroelectric power stations, the construction and use of steam and gas turbine generating units, as well as the modernization of the existing equipment of the hydroelectric power station. But, unfortunately, this path requires significant financial and material costs, as well as a sufficiently long time. Therefore, it is necessary to apply such methods of controlling the demand of consumers for electric power, which provide the least amount of time and expenses, while remaining effective. It's about the economic management methods. Thus, one of such means of economic management of consumer demand is the tariff system of the country, namely tariffs differentiated by zones of the day. Differentiated tariffs in Ukraine have been in force since 1995. At that time, the use of such tariffs had a strong stimulating effect on consumers, with what each year their number became more and more. But, over time, the needs of consumers for electric energy have changed, with that, differentiated by zones of the day, namely, the coefficients of each zone, for a long time remained unchanged. In this regard, many scientists analyze the effect of differentiated tariffs on the equalization of daily charts, but at the same time, this problem remains relevant, because zone tariffs have lost their stimulating effects to attract new consumers, and at the same time, their number is even less. Accordingly, a new method of address management of consumer demand for electric power was proposed. The purpose and tasks of the study. The aim of the work is to improve the mechanism of address management of consumer demand for electric power. To achieve this goal, the following tasks were solved: • analysis of the current state of the Ukrainian energy sector; • estimation of the use of tariff-differentiated zones; • determination of the nature and degree of influence of groups of consumers on the formation of a daily schedule of electric load of the power system; • Comparison of the existing boundaries of the tariff zones of the day with the modern needs of consumers; • The concept and methodical bases of the construction and use of the mechanism of address control of electric power consumption modes have been improved; • The calculation of the participation coefficient and the distribution coefficient has been improved. Object of study. Processes of control of modes of consumption of electric power in the power system. Subject of study. Methods and methods for controlling the demand of electric power consumers in the energy system. Research methods. Methods of correlation and dispersion analysis, as well as mathematical statistics, are used to determine the nature and extent of the impact of major consumer groups on the unevenness of the schedules of the electric load of the power system; the study of the nature and degree of counteraction of the load of consumers, which use differentiated by the zones of the day tariffs in accordance with the change in demand for the power of consumers who do not use these tariffs; Estimating the potential of energy saving in electricity generation for electricity production, which can be obtained as a result of equalizing the unevenness of its loading schedule. Methods for establishing confidence intervals and clustering of hourly loads using Student's criterion are used to identify the actual days of the day with a statistically different level of electrical load of the power system and consumer groups. Methods of generalization and logical approach, methods of modeling electric power schedules, methods of optimal programming are used for the use of address management tools for power consumption in the grid. Scientific novelty of the obtained results. The method of determining the duration and limits of actual days of the day with a statistically different level of electric load, based on the grouping of hourly values of the load of the power system and consumers of electricity, has been improved. The indicator, which allows to assess the degree of counteraction to the electric load of "diffariffic" and "non-dipharmary" consumers, is improved. The quantitative indicators, namely, the coefficient of participation and the distribution coefficient, which allow estimating the participation of each of the participants in the proposed mechanism of address management of consumer demand in the alignment of the unevenness of the schedule of the electric load of the grid. The practical value of the results. For the effective stimulation of consumers to equalize the uneven schedule of electric loading of the UES of Ukraine, the proposed concept and methodical bases can be applied. Also, it has a new direction in developing market-based methods for controlling electricity consumption regimes in the grid.
Oosthuizen, Nicolas Laurens. "Optimum water distribution between pumping stations of multiple mine shafts / Nicolas Laurens Oosthuizen." Thesis, North-West University, 2012. http://hdl.handle.net/10394/9189.
Повний текст джерелаThesis (MIng (Electrical and Electronic Engineering))--North-West University, Potchefstroom Campus, 2013.
Калашников, Костянтин Олексійович, Константин Алексеевич Калашников та Konstantin A. Kalashnikov. "Зменшення втрат електроенергії в тяговій мережі постійного струму шляхом вибору раціональної дислокації тягових навантажень". Thesis, Видавництво Дніпропетровського національного університету залізничного транспорту імені академіка В. Лазаряна, 2014. http://eadnurt.diit.edu.ua:82/jspui/handle/123456789/2010.
Повний текст джерелаUK: АНОТАЦІЯ Дисертація присвячена вирішенню актуальної науково-технічної задачі зменшення втрат електроенергії в тяговій мережі постійного струму шляхом вибору раціональної дислокації тягових навантажень. На основі аналізу існуючих методів зменшення втрат електроенергії в тяговій мережі встановлено, що існують додаткові резерви зменшення втрат шляхом вибору раціональної дислокації тягових навантажень, послідовності відправлення поїздів різних категорій, інтервалів між поїздами. Сформульовано принцип зменшення втрат електроенергії в тяговій мережі на основі методу деформованого багатогранника, який дозволяє розраховувати оптимальні відстані між тяговими навантаженнями для побудови енергоефективних ГРП. Розглянуто ситуації для різної кількості поїздів між ТП. Запропоновано принцип зменшення втрат електроенергії в тяговій мережі на основі евристичного алгоритму пошуку мінімуму функції списку шляхом вибору оптимальної послідовності відправлення та інтервалів між поїздами. При цьому послідовність поїздів різних категорій представляється як список, а кожній послідовності відправлення поїздів різних категорій відповідає певне значення втрат електроенергії в тяговій мережі. Розроблено програмний комплекс для складання енергоефективних ГРП. Проведено експериментальну перевірку теоретичних положень дисертації з використанням програмного комплексу «Поток». Чистий дисконтований дохід для електрифікованих ділянок Придніпровської залізниці за 1 рік становить 1,4 млн грн.
RU: АННОТАЦИЯ Диссертация посвящена решению актуальной научно-технической задачи уменьшения потерь электроэнергии в тяговой сети постоянного тока путем выбора рациональной дислокации тягових нагрузок. На основе анализа существующих методов уменьшения потерь электроэнергии в тяговой сети установлено, что существуют дополнительные резервы снижения потерь путем выбора рациональной дислокации тяговых нагрузок, последовательности отправления поездов различных категорий, интервалов между поездами. Выделены факторы, которые влияют на величину потерь электроэнергии в тяговой сети постоянного тока: параметры СТЭ – схемы питания контактной сети, длина фидерной зоны, мощность и напряжение на шинах ТП; параметры пути – сопротивление движению, уклоны; технические данные ЭПС – максимальная скорость, масса, мощность, потребляемый ток; параметры транспортного потока – дислокация поездов между ТП, размеры движения, интервалы между поездами, последовательность отправления поездов различных категорий; прочие факторы – квалификация машинистов, погодные условия. Установлен потенциал уменьшения потерь электроэнергии в тяговой сети путем уменьшения неравномерности транспортного потока: для схемы двухстороннего питания величина потерь изменяется на 18,9 %; для узловой схемы питания – на 11,1 %. Разработаны модели СТЭ и транспортного потока, в которых ж.д. станция представлена как трансформатор транспортного потока с возможностью учета влияния показателей транспортного потока на величину потерь электроэнергии в тяговой сети. Установлены предельные показатели транспортного потока по условиям работы СТЭ для электрифицированного участка Приднепровской ж.д.: максимальная интенсивность транспортного потока – , максимальная плотность транспортного потока – . Разработана математическая модель энергооптимальной дислокации тяговых нагрузок между ТП, позволяющая выбирать схемы расположения тяговых нагрузок между ТП на каждом шаге времени, при которых потери электроэнергии в тяговой сети минимальны. Предложен подход, при котором расстояния между тяговыми нагрузками представлены как ребра многогранника. Ограничения по безопасности движения поездов учитываются следующим образом: минимальная длина ребра должна быть не меньше длины блок-участка устройств СЦБ, максимальная – не более длины рассматриваемого участка. Сформулирован принцип уменьшения потерь электроэнергии в тяговой сети на основе метода деформируемого многогранника, который позволяет рассчитывать оптимальные расстояния между тяговыми нагрузками для построения энергоэффективных ГДП. Рассмотрены ситуации для различного количества поездов между ТП. Предложен принцип уменьшения потерь электроэнергии в тяговой сети на основе эвристического алгоритма поиска минимума функции списка путем выбора оптимальной последовательности отправления и интервалов между поездами. При этом последовательность поездов различных категорий представляется как список, а каждой последовательности отправления поездов различных категорий поставлено в соответствие определенное значение потерь электроэнергии в тяговой сети. Разработан программный комплекс для составления энергоэффективных ГДП. Проведена экспериментальная проверка теоретических положений диссертации с использованием программного комплекса «Поток» путем имитационного моделирования. Установлены пределы изменения величины потерь электроэнергии в зависимости от: последовательности отправления поездов для различных схем питания – 20-23 % (двухсторонняя – 20 %, узловая и параллельная – 23 %); дислокации и интервалов между тяговыми нагрузками – 23–27 % (двухсторонняя – 23 %, узловая и параллельная – 27 %). Проведены технико-экономические расчеты, подтверждающие эффективность применения методов уменьшения потерь электроэнергии в тяговой сети путем выбора рациональной дислокации тяговых нагрузок. Чистый дисконтированный доход для электрифицированных участков Приднепровской ж.д. за 1 год составляет 1,4 млн грн.
EN: ABSTRACT The dissertation is devoted to the solution of the important scientific and technical tasks - decreasing energy losses in traction line by choosing a rational dislocation traction loads. Based on the analysis of existing methods of reducing electricity losses in traction lines it’s established that there are additional reserves of decreasing losses by choosing a rational dislocation of the traction loads, sequence of departure of trains with different categories, intervals between trains. It’s formulated the principles of reducing electric power losses in traction lines based on the method of strain of the polytope, which allows to calculate the optimal distance between traction loads for building energy-efficient schedule of trains. The author proposed the principle of reduction of electricity losses in traction line on the basis of the heuristic algorithm for finding the minimum of the function list by selecting the optimal sequence of departure and intervals between trains. The sequence of trains with various categories is represented as a list, and each sequence of trains with different categories corresponds to a certain value of electricity losses in traction lines. It’s developed a software package designed to compute energy-efficient train schedule. An experimental verification of theoretical propositions in dissertation using software complex «Potok» on the basis of simulation showed a positive economice effect.The net product value for electrified sections of Pridneprovskaya railway for 1 year is 1.4 million UAH.
Tai-Yuan, Su, and 蘇泰源. "Design of Windows' Load Analysis Schedule and Relevant Dtatbase in Distribution System." Thesis, 1996. http://ndltd.ncl.edu.tw/handle/80283198148873883437.
Повний текст джерела國立臺灣科技大學
電機工程研究所
84
The purpose of this thesis is to develop a windows-based load analysis program for branch circuits lay-out in a industrial power distribution system design. A basic database required has been built as well. Recently, great improvement has been obtained in the computer techniques, especially the Graphic User Interface (GUI) techniques. Based upon the superior GUI techniques, the huge and complicated distribution analysis information can be efficiently synthesized by a personal computer. The techniques has been successively applied to the design of a practice distribution system. This thesis applies the recently developed GUI techniques to develop a distribution load analysis program and build a related database to analyze and design branch circuits in a industrial distribution system design. The developed system can improve the traditional human- made process and avoid unintentional mistakes. It is of value to the design engineers and consultants of a industrial power distribution system.
Lin, Cheng-Han, and 林政翰. "Application of Genetic Programming to Fuzzy Modeling and the Schedule of Direct Load Control." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/72juw6.
Повний текст джерела國立臺北科技大學
電機工程系研究所
95
Based on a good searching ability of structure, Genetic Programming is designed to search the structural solution and to utilize crossover mechanism of tree structure to get the better structure. In this thesis, we will use the performance of Genetic Programming to solve two optimal questions. (1).Application of Genetic Programming to fuzzy modeling: This study is concerned with a general methodology of identification of fuzzy models. Unlike other numeric models, fuzzy models operate at a level of information granules (fuzzy sets), and this aspect brings up an important requirement of design on about the transparency of the model. (2).Application of Genetic Programming to the schedule of direct load control: Based on the searching ability of Genetic Programming, we can find an optimal control strategy to reduce the peak load.
Chen, Chen-Yu, and 陳振宇. "Self-Stabilizing Scheduler for Load-Balancing Distributed Systems." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/52807215836831160948.
Повний текст джерела國立台灣工業技術學院
管理技術研究所
85
This thesis proposed a new self-stabilizing task dispatching algorithm fordynamically load-balancing systems. The algorithm involves a leader election algorithm, a minimal height spanning tree algorithm, a diffusioncomputation, and a task migration algorithm. It simply send a new comingtask to the least loaded node on the global system, where the decision ismade distributed and with fault tolerant. A previous work was shown by Flatebo, Datta and Bourgon which enhanced the fault-tolerance by self- stabilizing paradigm. However, due to the property of self- stabilization,their algorithm do not fast enough to work for a bursty system. A self-stabilization algorithm can tolerate state-transient fault and communication link fault in a non- masking manner. But the main disadvantageis that it costs more message overhead and an obvious slowdown than a non-self- stabilizing one. Our algorithm improved the time of service by overlapping the location scheme and the task migration scheme. The simulation comparison with the previous work is presented. We also implemented a scheduler based upon our algorithm on a network of Unix workstations with TCP/IP and UCP/IP facility. The result evidence that thealgorithm is practical and efficient in real environment, and it is suitablefor constructing both kernel- or user-level support load-balancing systems.
You, Hsin-Han, and 尤信翰. "A Load-Aware Scheduler for MapReduce Framework in Heterogeneous Environments." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/30478140785981334531.
Повний текст джерела國立交通大學
資訊科學與工程研究所
99
MapReduce is becoming a trendy programming model for large-scale data processing such as data mining, log processing, web indexing and scientific research. MapReduce framework is a batch distributed data processing framework that disassembles a job into smaller map tasks and reduce tasks. In MapReduce framework, master node distributes tasks to worker nodes to complete the whole job. Hadoop MapReduce is the most popular open-source implementation of MapReduce framework. Hadoop MapReduce comes with a pluggable task scheduler interface and a default FIFO job scheduler. Performance of MapReduce jobs and overall cluster utilization rely on how the tasks being assigned and processed. In practice, there are some issues such as dynamic loading, heterogeneity of nodes, multiple job scheduling needs to be taken into account. We find that current Hadoop scheduler suffers from performance degradation due to the above problems. We propose a new scheduler named Load-Aware Scheduler to address these issues, and improve the overall performance and utilization. Experimental results show that we could improve 10 to 20 of utilization on average by avoid unnecessary speculative tasks.
Yesuratnam, G. "Development Of Algorithms For Security Oriented Power System Operation." Thesis, 2007. http://hdl.handle.net/2005/573.
Повний текст джерелаHoon, Ilandi. "Beware the bogeyman : capital gains tax and loan accounts / Ilandi Hoon." Thesis, 2014. http://hdl.handle.net/10394/11039.
Повний текст джерелаLLM (Estate Law), North-West University, Potchefstroom Campus, 2014
Pundir, Jagdish Kumar. "Lead banks and the traditional moneylending institutions in the rural setting-A sociological study of scheduled castes beneficiaries of loan facilities in a North Indian village." Thesis, 1989. http://hdl.handle.net/2009/4577.
Повний текст джерела