Дисертації з теми "Nuclear power unit"
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Wu, Zhi. "Transmission expansion planning and unit commitment with large-scale integration of wind power." Thesis, University of Birmingham, 2016. http://etheses.bham.ac.uk//id/eprint/6738/.
Повний текст джерелаBarner, Robert Buckner. "Power conversion unit studies for the next generation nuclear plant coupled to a high-temperature steam electrolysis facility." Texas A&M University, 2006. http://hdl.handle.net/1969.1/4835.
Повний текст джерелаЛукинова, Дарина Андреевна, Валерий Петрович Северин та Елена Николаевна Никулина. "Оптимизация показателей качества систем автоматического управления ядерным реактором ВВЭР-1000". Thesis, Національний університет біоресурсів і природокористування України, 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/33125.
Повний текст джерелаThe results of mathematical modeling of automatic control systems of power of the nuclear reactor WWER-1000 are presented. The technique of optimization of direct quality indexes of automatic regulation system of power of a nuclear reactor with various types of regulators is applied.
Северин, Валерій Петрович. "Синтез систем керування енергоблоку атомної електростанції методами векторної оптимізації". Thesis, Львівська політехніка, 2011. http://repository.kpi.kharkov.ua/handle/KhPI-Press/32716.
Повний текст джерелаProblems of synthesis of automatic control systems based on the methods of vector optimization of direct quality indices and improved integral quadratic estimate are presented. Mathematical models of control systems for power unit of nuclear electric station for normal modes are constructed. The results of synthesis of optimal PID and fuzzy controllers are presented.
Нікуліна, Олена Миколаївна, Валерій Петрович Северин та Ніна Вікторівна Трубчанова. "Математичні моделі систем управління парогенератором енергоблоку АЕС". Thesis, НТУ "ХПІ", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/33421.
Повний текст джерелаThe mathematical model of the system of automatic control of the efficiency of a steam generator, which is presented in the space of states with relative variables in the form of a system of differential equations, is developed. Problems of parameters identification of control systems models based on experimental data of processes in steam generator PGV-1000 were solved.
Северин, Валерий Петрович, Елена Николаевна Никулина та Дарина Андреевна Лукинова. "Многокритериальный синтез систем управления энергоблока АЭС с реактором ВВЭР-1000 для эксплуатации в маневренных режимах". Thesis, НТУ "ХПІ", 2017. http://repository.kpi.kharkov.ua/handle/KhPI-Press/33422.
Повний текст джерелаFor a multicriterion synthesis of nonlinear control systems, a simplified vector objective function is used that takes into account the limitations of the variable parameters, the limitations of overshoot and swing of the oscillations, and also the requirements for the minimum of the control time. As an example of the task of synthesizing the power unit control system during operation in maneuvering modes, the task of multi-criteria synthesis of the turbine control system with fuzzy regulators is considered.
Ludvík, Lubomír. "Náhřev a spouštění jaderného bloku Elektrárny Dukovany po odstávce." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2016. http://www.nusl.cz/ntk/nusl-242192.
Повний текст джерелаVeselý, Libor. "Obnova hřídele vzduchotechnického soustrojí." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2017. http://www.nusl.cz/ntk/nusl-318151.
Повний текст джерелаСеверин, Валерий Петрович. "Синтез систем управления энергоблока АЭС в лаборатории оптимизации OPTLAB". Thesis, ТЕС, 2015. http://repository.kpi.kharkov.ua/handle/KhPI-Press/43189.
Повний текст джерелаConsideration was given to the laboratory of optimization methods based on the principles of the modularity, simplicity and reliability. Optimal automatic control systems for the nuclear reactor, steam generator, steam turbine and automatic maintenance of the neutron power and the pressure before the turbine for normal operation modes were synthesized.
Северин, Валерий Петрович, Елена Николаевна Никулина та Дарина Андреевна Лютенко. "Анализ и синтез систем управления энергоблока АЭС для маневренных режимов эксплуатации". Thesis, Сумський державний університет, 2016. http://repository.kpi.kharkov.ua/handle/KhPI-Press/33429.
Повний текст джерелаModels and methods for analysis and synthesis of automatic control systems of power units of nuclear power plants were improved on the basis of optimization methods. Nonlinear mathematical models of control systems of power unit were built and synthesis of optimal controllers was carried out for maneuvering modes of operation.
Myslíková, Veronika. "Rizika spojená se zapojením jednotek sboru dobrovolných hasičů obcí do monitorování radiační situace." Master's thesis, Vysoké učení technické v Brně. Ústav soudního inženýrství, 2020. http://www.nusl.cz/ntk/nusl-414185.
Повний текст джерелаGreyvenstein, Renée. "Techno-economic comparison of power conversion units for the next generation nuclear plant / R. Greyvenstein." Thesis, North-West University, 2005. http://hdl.handle.net/10394/4481.
Повний текст джерелаНікуліна, Олена Миколаївна. "Методи, моделі та інформаційна технологія оптимізації управління складними динамічними системами (на прикладі енергоблоку АЕС)". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2019. http://repository.kpi.kharkov.ua/handle/KhPI-Press/44914.
Повний текст джерелаThesis for scientific degree of Doctor of Technical Sciences in specialty 05.13.06 “Information Technologies” (12 – Information Technologies). – National Technical University “Kharkіv Polytechnic Institute”, Ministry of education and science of Ukraine, Kharkіv, 2019. The object of research is the processes of control of complex dynamic systems. The subject of research is the methods, models and information technology of optimization of control of complex dynamic systems. The doctoral dissertation is a completed research work which contains the solution of an important scientific and applied problem of development of methods, models and information technology of optimization of control of complex dynamic systems characterized by high order of models and a large number of parameters and nonlinearities on the basis of combining program blocks of systems models and optimization methods, system criteria, information on dynamic and optimization processes, modules of integration methods and data structures as an example of optimizing the control of NPPs with WWER-1000. The introduction validates the relevance of the subject of the dissertation, formulates the purpose and objectives of the research, outlines the scientific novelty and practical value of the results obtained, the personal contribution of the applicant to the development of the subject of the dissertation. The data of the implementation of the results of the dissertation research, their validation and publications are provided. The first section contains the analysis of the problems of information technology control of complex dynamic systems, substantiation of the direction of research. The research analyzes modern information technologies of control and optimization with the purpose of their use for optimization of processes of complex dynamic systems control. As an example of a complex dynamic system the NPP unit with the WWER-1000 nuclear reactor is considered. The thesis analyzes methods of process modeling in complex dynamic systems and information control systems, quality indicators of information and control systems and possibilities of their application to the processes of control of complex dynamic systems, existing approaches and methods of synthesis of information control systems, computational optimization methods and possibilities of their use for optimization of quality indicators of information and control systems. The second section is devoted to the development of information technology elements of optimization of control of complex dynamic systems. The scientific and methodological foundations of creation and application of information technology for control of complex dynamic systems are developed which includes six basic functional elements, namely a block of systems models, a module of methods of integration, a block of calculation of criteria of quality of systems, a block of methods of optimization, a block of presentation of information and a module of data structures with the formation of data structures of tasks and processes of optimization and a functional model of process of optimization of control of complex dynamic systems that allows filing data structures with the ability to continue the process of optimizing the complex dynamic system and presenting the results in text and graphical forms. The third section summarizes the principles of dynamic systems modeling and develops specific models of dynamic systems for information technology control optimization, using the example of a B-320 series WWER-1000 reactor. General models of dynamic systems with relative state changes are proposed, on the basis of which nonlinear mathematical models for the control units of NPP units as complex dynamic systems are constructed. Based on the neutron kinetics of the reactor, gradual heat dissipation, thermal processes in the fuel, shells and coolant, changes in xenon and boron concentrations, concentrated and vertically distributed models of the WWER-1000 nuclear reactor of the B-320 series have been developed. According to the equations of heat transfer, material and thermal balance of steam generation, circulation, the main steam collector, the drive of steam turbine valve and the actuator of regulating feed valve, the model of PGV-1000 steam generator has been built. The K-1000-60 / 1500-2 steam turbine model is built based on the pressure equations in constant volumes of a steam turbine which include steam flow, the rotor speed equation using the turbine variable power. The fourth section is devoted to the generalization of methods of analysis of complex dynamic systems and analysis of processes in WWER-1000 reactor of B-320series, PGV-1000steam generator, K-1000-60 / 1500-2 steam turbine on the basis of nonlinear mathematical models of these objects of control. Methods of analysis of mathematical models of dynamic systems are improved with the use of matrix methods of integration of systems of differential equations that is the method of the matrix exponent and its integral for integration of linear systems, system methods of the first, second and third degrees for integration of nonlinear systems, which ensures the improvement of accuracy processes compared to other methods. The analysis of transients in nonlinear concentrated and vertically distributed models of the WWER-1000 reactor of the B-320 series, the model of the PGV-1000 steam generator and the K-1000-60 / 1500-2 steam turbine has been made. For the vertically distributed reactor model, the axial offset is calculated. In the fifth section models of information control systems for complex dynamic objects are developed, for example, information control systems of a power unit with WWER-1000 reactor. Models of information control systems for identification of parameters of information control systems and for optimization of parameters of regulators have been generalized. The thesis develops models of information control systems of NPP unit, namely the models of Neutron power of nuclear reactor, the model of water level in steam generator, the model of rotation speed of steam turbine rotor, the model of a whole power unit to maintain neural power of the reactor and to maintain the pressure in the main steam collector in the form of differential equations, systems of differential equations, variable and permanent parameters, external actions included in the block of models of systems of information technology. The sixth section is devoted to the generalization of models of information control systems for identification of their parameters and use of information technology for identification of parameters of dynamic systems exemplified by information control system of the PGV-1000 steam generator and information control systems of other elements of the second circuit of the NPP unit. Criteria and methods for the identification of dynamic systems have been developed, a vector target identification function has been formed, a method for its calculation has been developed, and methods for unconditional optimization of scalar functions with the restart of the comparison operation have been implemented for its optimization. Mathematical models of control systems with PI regulators to identify the parameters of control objects have been generalized. The task of identifying the parameters of the model of the water level control system in the PGV-1000 steam generator according to the experimental data has been done. The thesis carries out the identification of parameters for deaerators, condensers, main steam collectors, auxiliary collectors, turbo-feed pumps, separators of superheaters, low and high heaters according to the results of adjustment tests of control systems of the second circuit of NPP units with WWER-1000 reactors. The analysis of the degree of stability and the boundaries of the area of stability for these control systems substantiates their stability The seventh section is devoted to the generalization of the quality criteria for information control systems, namely, direct quality indicators and improved integral estimates, the formation of vector target functions and methods of their optimization based on them, as well as examples of use of information technology to optimize the control of complex dynamic systems. Methods of calculation of direct quality indicators of dynamic systems and improved integral quadratic estimations are developed, problems of optimization of parameters of dynamic systems are reduced to optimization of vector target functions that take into account the requirements of implementation of the system, its stability, improvement of quality indicators. One-way search optimization methods are provided to optimize vector target functions. Using information technology to optimize the control of complex dynamic systems based on models of information control systems of the WWER-1000 nuclear reactor of the B-320 series, the PGV-1000 steam generator, the K-1000-60 / 1500-2 steam turbine, the systems of the second circuit of the power unit, the entire NPP unit with the WWER-1000 reactor under normal operating conditions with partial load reduction, the parameters of the regulators have been optimized according to the direct quality indicators. The above feasibility study of the obtained results of the use of information technology optimization control of complex dynamic systems confirms that it has significant technical advantages, and its use allows reducing the time, hardware, software and human resources in the development and improvement of complex dynamic systems by increasing the level of automation of these processes.
Нікуліна, Олена Миколаївна. "Методи, моделі та інформаційна технологія оптимізації управління складними динамічними системами (на прикладі енергоблоку АЕС)". Thesis, Національний технічний університет "Харківський політехнічний інститут", 2020. http://repository.kpi.kharkov.ua/handle/KhPI-Press/44889.
Повний текст джерелаThesis for scientific degree of Doctor of Technical Sciences in specialty 05.13.06 – Information Technologies. – National Technical University "Kharkіv Polytechnic Institute", Ministry of education and science of Ukraine, Kharkіv, 2019. The dissertation is devoted to the development and justification of methods, models and information technology for optimizing control of complex dynamic systems and their study using the example of information and control systems of a nuclear power unit. The research analyzes modern information technologies of control and optimization with the purpose of their use for optimization of processes of complex dynamic systems control. As an example of a complex dynamic system the NPP unit with the WWER-1000 nuclear reactor is considered. The thesis analyzes methods of process modeling in complex dynamic systems and information control systems, quality indicators of information and control systems and possibilities of their application to the processes of control of complex dynamic systems, existing approaches and methods of synthesis of information control systems, computational optimization methods and possibilities of their use for optimization of quality indicators of information and control systems. The scientific and methodological foundations of creation and application of information technology for control of complex dynamic systems are developed which includes six basic functional elements, namely a block of systems models, a module of methods of integration, a block of calculation of criteria of quality of systems, a block of methods of optimization, a block of presentation of information and a module of data structures with the formation of data structures of tasks and processes of optimization and a functional model of process of optimization of control of complex dynamic systems that allows filing data structures with the ability to continue the process of optimizing the complex dynamic system and presenting the results in text and graphical forms. General models of dynamic systems with relative state changes are proposed, on the basis of which nonlinear mathematical models for the control units of NPP units as complex dynamic systems are constructed. Based on the neutron kinetics of the reactor, gradual heat dissipation, thermal processes in the fuel, shells and coolant, changes in xenon and boron concentrations, concentrated and vertically distributed models of the WWER-1000 nuclear reactor have been developed. According to the equations of heat transfer, material and thermal balance of steam generation, circulation, the main steam collector, the drive of steam turbine valve and the actuator of regulating feed valve, the model of PGV-1000 steam generator has been built. The K-1000-60/1500-2 steam turbine model is built based on the pressure equations in constant volumes of a steam turbine which include steam flow, the rotor speed equation using the turbine variable power. Methods of analysis of mathematical models of dynamic systems are improved with the use of matrix methods of integration of systems of differential equations that is the method of the matrix exponent and its integral for integration of linear systems, system methods of the first, second and third degrees for integration of nonlinear systems, which ensures the improvement of accuracy processes compared to other methods. The analysis of transients in nonlinear concentrated and vertically distributed models of the WWER-1000 reactor, the model of the PGV-1000 steam generator and the K-1000-60/1500-2 steam turbine has been made. For the vertically distributed reactor model, the axial offset is calculated. Models of information control systems for identification of parameters of information control systems and for optimization of parameters of regulators have been generalized. The thesis develops models of information control systems of NPP unit, namely the models of Neutron power of nuclear reactor, the model of water level in steam generator, the model of rotation speed of steam turbine rotor, the model of a whole power unit to maintain neural power of the reactor and to maintain the pressure in the main steam collector in the form of differential equations, systems of differential equations, variable and permanent parameters, external actions included in the block of models of systems of information technology. Criteria and methods for the identification of dynamic systems have been developed, a vector target identification function has been formed, a method for its calculation has been developed, and methods for unconditional optimization of scalar functions with the restart of the comparison operation have been implemented for its optimization. Mathematical models of control systems with PI regulators to identify the parameters of control objects have been generalized. The task of identifying the parameters of the model of the water level control system in the PGV-1000 steam generator according to the experimental data has been done. The thesis carries out the identification of parameters for deaerators, condensers, main steam collectors, auxiliary collectors, turbo-feed pumps, separators of superheaters, low and high heaters according to the results of adjustment tests of control systems of the second circuit of NPP units with WWER-1000 reactors. The analysis of the degree of stability and the boundaries of the area of stability for these control systems substantiates their stability. Methods of calculation of direct quality indicators of dynamic systems and improved integral quadratic estimations are developed, problems of optimization of parameters of dynamic systems are reduced to optimization of vector target functions that take into account the requirements of implementation of the system, its stability, improvement of quality indicators. One-way search optimization methods are provided to optimize vector target functions. Using information technology to optimize the control of complex dynamic systems based on models of information control systems of the WWER-1000 nuclear reactor, the PGV-1000 steam generator, the K-1000-60/1500-2 steam turbine, the systems of the second circuit of the power unit, the entire NPP unit with the WWER-1000 reactor under normal operating conditions with partial load reduction, the parameters of the regulators have been optimized according to the direct quality indicators.
Serim, Ayse Esra. "The Iranian factor in the context of Turkish-US relations." Thesis, Aix-Marseille, 2020. http://www.theses.fr/2020AIXM0055.
Повний текст джерелаThe objective of this dissertation is to study the Iranian factor in the context of the US-Turkish relationship. Since the beginnings of the 1990s, coupled with regional and international developments, Iran began to play an important role at the center of US-Turkish relations. Since then, both US policies and military interventions within the Middle East paved the way for Iran to arise as a challengeable actor within the region. The study aims to address how American and Turkish policymakers have responded to issues in the region with regard to Iran. A central focus of the dissertation is Iran’s nuclear question and Iran’s increasing power, which were simultaneously of particular concern to Washington, Ankara, and Tehran. Therefore, this dissertation demonstrates how these three actors handled the nuclear issue within the framework of their concerns/interests and political legitimacy and credibility. The fact that the Iranian regime has sought to increase its sphere of influence throughout the region has led the two allies to adopt common strategies from time to time. In fact, the Iranian factor has triggered important debates and developments between Washington and Ankara, in direct proportion to the positions of Turkey and Iran on different sides, particularly with the onset of the Arab Spring and Washington’s changing approach to Iran
Monnet, Rodolphe. "La politique extérieure de l'Inde en Afrique." Thesis, Sorbonne Paris Cité, 2018. http://www.theses.fr/2018USPCB025.
Повний текст джерелаSince 2001 and the reshuffling of the balance of power, India has become one of the influential actors in an increasingly multipolar international context. The current groundswells are reshuffling powers between Nations in shaping new alliances and new power games. India is, more than ever, involved in this trend since the current Prime Minister, Narendra Modi, came to power in 2014. He conducts an ambitious foreign policy as a means to make his country a global and respected power. The context of the issue detailed in this document is: to what extent does Africa's place in India's foreign policy enables India to reach this status of power? This thesis investigates the following three themes: Firstly, the Indian Ocean's place in the Indo-African relationship should reflect Africa's role in India's will to make the Indian Ocean region a peaceful and secured space in which India is a decisive player in front of powerful and heterogeneous political actors. Secondly, this thesis focuses on assessing Africa's role in India's initiatives to be an influential player on politics on the international agenda through international bodies, its bilateral relations with African states and the Indian diaspora settled down in these countries. Thirdly, India's search for that particular status goes through the economic area and the assessment of India's economic footprint in Africa to better establish its influence on that Continent. This study tries to shed the light on India's foreign policy while the United States are reassessing their involvement in the Indian Ocean, and while China is setting up its "One Belt, One Road" and India and Japan have just come together to propose a new partnership to Africa
Ou, Yan-Zhen, and 歐彥蓁. "A Study of Packing Problems for the Decommissioning Nuclear Power Plant Unit." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/42v9q4.
Повний текст джерела國立臺北科技大學
經營管理系碩士班
106
This study mainly investigates the three-dimensional packaging problem for the decommissioning nuclear power plant unit. The constraints include active conditions and weight limitations of the given containers. The objective is to minimize the number of given containers to reduce the storage space and costs. To ensure the safety and smoothness of decommissioning work of nuclear facilities and to find out the optimal spatial configuration, this study explores the heuristic algorithms and deterministic algorithms for placing dismantling units to improve space utilization rate. The proposed method can effectively solve the problem to reduce the packing cost. Several numerical examples are presented to illustrate the effectiveness and efficiency of the proposed method.
Li, Wei Ting, and 李煒婷. "Analysis of Unit 3 Fukushima Nuclear Power Plant Accident Using MELCOR 1.8.5 Code." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/57551607601920012295.
Повний текст джерела國立清華大學
核子工程與科學研究所
102
On 2011 March 11, a strong earthquake induced several large waves of tsunami hit the east coast of Japan. The tsunami caused extensive damage to the site of Fukushima Daiich Nuclear Power Plant (NPP). Fukushima Daiichi NPP employed BRW4 reactor with MARK I containment, which is identical to the design of Chinshan NPP of Taiwan Power Company. In the present study, an input deck of MELCOR based on the design of Chinshan NPP is construct to simulate the Fukushima Daiichi Unit 3 accident. In the simulation, the timings of water injection, depressurization, and containment venting are set as specified in the official Japanese government report about the accident. The results of simulation demonstrate that the hydrogen burns observed during the accident are not predicted by the code. The the reactor pressure vessel and the containment are remain intact throughout the accident. As predicted in the MELCOR simulation, there is 67 kilogram of hydrogen leak into the reactor building. Nevertheless, the concentration of hydrogen is still too low to induce hydrogen burn. There is no radionuclide release to environment in the base case simulation due to that the reactor building is kept intact up to the end of the simulation. In a sensitivity study, it is assumed that the reactor building breaches at the time specified in the official government report, The results show that 1.3% of Xe is released to the environment. The releases of other radionuclides are very minor. The results of MELCORE simulation of the accident are compared with the results of MAAP5 simulation. The differences are very significant. The results of MAAP5 simulation indicated that the reactor building breached due to the pressure spike predicted at 68.2 hours after scram, which was caused by the relocation of molten core from core region into vessel lower plenum.
Guo, Hong-yang, and 郭浤洋. "A Study on the Pumped Storage Unit Dispatching and Power System Stability after Commercial Operation of the Lungmen Nuclear Power Plant." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/dpt9yx.
Повний текст джерела國立臺灣科技大學
電機工程系
99
As far as power system operation is concerned, it is very important to set up enough spinning reserve to avoid an unexpected generator breakdown and the lack of electricity which comes from load forecast error. Therefore, the power company must establish a set of planning principles to make sure that the power system is capable of running safely, supplying sufficient power, maintaining superior power quality and reducing the cost of electricity. Taiwan Power Company is expected to start commercial operation for the first unit of Lungmen nuclear power plant in 2012 and the second unit will start in 2013. The largest generator in the system will be Lungmen nuclear power plant whose rated capacity is 1350MW in place of Kuosheng nuclear power plant whose rated capacity is 985MW and the capacity will be increased nearly 40%. However, if Lungmen nuclear power plant has a power outage, it is possible to have under-frequency load shedding considered in a low load in winter during a year. This thesis uses the load-frequency sensitivity factor which was provided by Taiwan Power Company to calculate the lowest frequency of each period in winter when Lungmen nuclear power plant has a breakdown and to estimate whether there is the possibility of having under-frequency load shedding or not. If it does, pumped storage units will be taken as instantaneous reserve therefore the reliability of power system can improve dramatically during this period. As a result, systems can reduce the arrangement of frequency regulating reserve and save the cost of electricity. This thesis also uses PSS/E simulation software to analyze the change of power flow after Lungmen nuclear power plant is incorporated into Taiwan Power System. When Lungmen nuclear power plant break down, firstly, the software will simulate the shift of system frequency and check whether the frequency regulating reserve is sufficient or not. Secondly, the change of power flow is analyzed after generators have been increased capacity. Finally, the reasonable unit commitment is suggested.
Visagie, Herman. "Evaluation and verification of an architecture suitable for a multi-unit control room of a pebble bed high temperature reactor nuclear power plant / Herman Visagie." Thesis, 2015. http://hdl.handle.net/10394/15761.
Повний текст джерелаMIng (Nuclear Engineering), North-West University, Potchefstroom Campus, 2015
郭惠煌. "The effects of power system dynamics on nuclear power generating units." Thesis, 1988. http://ndltd.ncl.edu.tw/handle/89257130756827755072.
Повний текст джерелаJhu, Jhan-Cing, and 朱展慶. "Application of Genetic Algorithms in Nuclear and Fossil Power Generator Units Maintenance Scheduling." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/z768e8.
Повний текст джерела國立臺北科技大學
自動化科技研究所
98
In recent years, due to the rapid economic growth in Taiwan, the consumption of electric energy has increased year by year. Apart from the period of 2008 to 2009, affected by the global financial tsunami, the peak load showed a decline in consumption of all time. For the rest of other years, consumption has increased steadily. According to the Taiwan Power Research Institute, the average load growth rate is 3.6%. Therefore, the supply of stable and reliable power is the prerequisite to the competition of power companies after the liberalization of the power industry. However, under the circumstances of the focus of the environmental consideration, and the difficulty in building new power plants, how to adjust existing generators to produce the energy with the greatest efficiency, proper maintenance schedule planning is essential. This article uses genetic algorithms, with objective function of levelized spinning reserve, and consider the maintenance manpower, continuous maintenance period, repair starting time, system loads, spinning reserve constraints, etc. Testing of 32 nuclear and fossil power generators unit maintenance scheduling is conducted to obtain the optimal solution. The analysis results showed that this method can obtain multiple sets of generator maintenance scheduling in a short period of time, that can help the program staff to develop the generator maintenance plan.
沈仲晃. "The model of pressurized water reactor nuclear units in the dynamic simulation of power systems." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/96772689024509538970.
Повний текст джерелаČernoch, Jakub. "Jaderná elektrárna Temelín a česko-rakouské vztahy." Master's thesis, 2013. http://www.nusl.cz/ntk/nusl-324649.
Повний текст джерелаHuard, Christine. "The DPRK in China's post-cold war foreign policy - a neoclassical realist analysis." Thèse, 2012. http://hdl.handle.net/1866/10000.
Повний текст джерелаSince the bilateral negotiations between the United States and the Democratic People’s Republic of Korea (DPRK) on the denuclearization of the Korean peninsula failed to produce any effective outcome in the 1990s, China was brought to the table and agreed to play its part as a mediator in the Four Party Talks (1997-1998) between both Koreas and the United States, as well as in the Six-Party Talks (2003-2007), with the addition of Russia and Japan as negotiators. While the American policies toward the DPRK have taken a tough and inflexible turn with former President George W. Bush declaring, at the end of January 2002, that North Korea, Iran, and Iraq “constitute an axis of evil arming to threaten the peace of the world”, China’s DPRK policy, however, reflects long-lasting terms of friendship and collaboration between the two countries. With concerns mounting over the aggressive policies of the North Korean regime and its determination to keep its nuclear arsenal, the question is: why does China insist on preserving its good ties with its neighbour, even when those policies are said to hinder its political and economical interests? To address this question, the theoretical framework of neoclassical realism will be tested within a three-level – systemic, state, and individual level – analysis, with consideration of the propositions that the relative distribution of power shapes China’s North Korea policy, and intervening variables at the state and individual levels are filtering the systemic pressures and thus, shaping decisions related to North Korea. These variables include: a) leadership’s perception of power; b) regime type and ideology, and; c) type of foreign policy decision-making unit. This in-depth analysis will then provide grounds in defining China’s core interests in backing up the secluded regime.