Yazar "Aydin, Musa" seçeneğine göre listele

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    AUTOMATION OF ELECTRICAL TRANSMISSION LINES' ROUTE OPTIMIZATION AND PROJECT DRAWING
    (GAZI UNIV, FAC ENGINEERING ARCHITECTURE, 2015) Eroglu, Hasan; Aydin, Musa
    There is a need for new Energy transmission lines (ETL) in order to meet the energy demand that has been increasing from past to present. Finding the optimum route and drawing the project is a time consuming and a complex problem for engineers. There are many studies for optimization of ETL's routing in the literature. However it is seen that there is a need for an interface that will facilitate the ETL routing by bringing together all the processes for ETL routing and preparing the project of the ETL by drawing the profile of the route. In this study, an interface using the Geographical information systems (GIS) is designed for finding the optimum route of ETL's, a project drawing program that can draw the profile and make all the other project processes is written. Also, controlling the project on the real terrain model by the users is ensured by the visualization of the ETL's projects on three-dimensional terrain model and satellite image.
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    DESIGN AND APPLICATION OF A LABORATORY SCALE UNDERGROUND CABLE MODEL
    (GAZI UNIV, FAC ENGINEERING ARCHITECTURE, 2012) Anadol, Mehmet Ali; Aydin, Musa; Yalcinoz, Tankut
    In this study, design of a physical underground cable model provided by a cascade connection of lumped-parameter equivalent pi (pi) circuits for laboratory scale power system applications is presented. The validity of the model was confirmed by a power transmission system using an infinite bus bar constituted of a static synchronous compensator (STATCOM) and the physical cable model. STATCOM exhibits the structure of a three-phase, twelve-pulse voltage source converter that operates on the principle of microcontroller based reactive power control. In such type of a power system, the effects of powering an unloaded and loaded transmission line, as well as load shedding on the cable line were investigated through various experiments and simulation studies. The simulation models for the power and control systems were built by employing the PSCAD/EMTDC program's C-programming interface and the graphics based models in its model library. The experimental results are compared with the results obtained from the PSCAD/EMTDC simulation program.
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    Design and Implementation of a Laboratory-scale Microcontroller-based Multi-pulse STATCOM
    (IEEE, 2012) Anadol, Mehmet Ali; Aydin, Musa; Yalcinoz, Tankut
    In this study, the design and application of a laboratory-scale, multi-pulse Static Synchronous Compensator (STATCOM) are presented, which provides reactive power compensation at the point of common coupling (PCC) for the purpose of enhancing the performance of the AC transmission system. STATCOM consists of two units of three-phase, six-pulse Voltage Source Converter (VSC) bridges, where IGBT (insulated gate bipolar transistor) semi-conductor switches are used. Fundamental Frequency Modulation (FFM) technique is used for controlling the converter bridges. The control system has been implemented with low-cost 16-bit microcontrollers. The validity of the laboratory-scale prototype was examined via experiment and simulation studies performed on an energy transmission system with a busbar. The experimental results are compared with the results obtained from the PSCAD/EMTDC simulation program.
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    Finding optimum route of electrical energy transmission line using multi-criteria with Q-learning
    (PERGAMON-ELSEVIER SCIENCE LTD, 2011) Demircan, Semiye; Aydin, Musa; Durduran, S. Savas
    Due to an increasing energy requirement the consideration of route determination is becoming important. The aim of this project is to find an optimum result considering its important criteria. Finding an optimum route is a complex problem. It does not mean the shortest path to the problem. It is important to find the best way under the criterion that is determined by experts. Because of this we did not use the classical shortest path algorithm and we applied one of algorithms of the Artificial Intelligence. In this work, Geographic Information System (GIS)-based energy transmission route planning had been performed. In this optimization, using Multiagent Systems (MAS) which is a subdirectory of Distributed Artificial Intelligence the multi-criteria affecting energy transmission line (ETL) had been severally analyzed. The application had been actualized on the Selcuk University Campus Area. Therefore, the digital map of the campus area particularly had been composed containing of relevant criteria. Using Q- learning Algorithm of Multiagent System the optimum route had been determined. (C) 2010 Elsevier Ltd. All rights reserved.
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    Genetic Algorithm in Electrical Transmission Lines Path Finding Problems
    (IEEE, 2013) Eroglu, Hasan; Aydin, Musa
    Today, Geographic Information Systems (GIS) solutions have entered every corner of the engineering studies like Electrical Transmission Lines (ETL) route optimization, vehicle routing, power plant siting and so on. Raster-based maps generated by GIS are very useful solutions for this kind of route optimization problems. The weighted sum of all the data can be converted to raster-based maps and gathered consecutively in GIS for ETL route optimization. In this paper, Genetic Algorithm (GA) is applied to ETL route optimization problems in order to find the best route on raster-based maps.
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    Optimal Load Shedding Strategy for Selcuk University Power System with Distributed Generation
    (ELSEVIER SCIENCE BV, 2015) Cimen, Halil; Aydin, Musa
    Traditionally under frequency relays and PLCs (programmable logic controller) are used for load shedding. Recently, these methods have been combined with smart power management systems to shed load automatically. These combined systems are the best methods. However, shedding exact amount of load is almost impossible, because it usually ends up with excessive or inadequate load shedding at feeders where it becomes necessary to sustain system stability. Disconnecting a certain amount of loads at a feeder is defined as load shedding. In case of emergency, faster and optimal load relief can be obtained with an intelligent load shedding system. This paper demonstrates an intelligent load shedding strategy in electrical system of Selcuk University Medical Faculty consisting different type and size of loads and being supplied by a distributed generator. Generators which supply with Selcuk University Medical Faculty can't meet energy requirement when there is a disturbance in power system. In case of 1 MW Solar power plant to be building at University Campus supply to Medical Faculty, the difference between power generation and demand will decrease. In this case, load shedding becomes necessary to improve reliability of power supply and sustain system stability. Loads are sorted by importance priority and optimal load shedding method is applied. The fuzzy logic is employed for optimal load shedding solution. Strategy is applied on Medical Faculty loads which have different importance level. (C) 2015 The Authors. Published by Elsevier Ltd.
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    Optimization of electrical power transmission lines' routing using AHP, fuzzy AHP, and GIS
    (TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2015) Eroglu, Hasan; Aydin, Musa
    With the increase of people's need for energy, electrical energy transmission has become a very important issue as well as electrical power generation. One of the most important problems in energy transmission is finding the best route in a very complex study area. To date, many people from different disciplines have come together to find the best routes by manual methods like using paper maps and deciding which route is the least-cost path (LCP) to the destination point. Today it is known that, in engineering problems, and especially in path-finding or site-placing problems, the Geographic Information System (GIS) is the most powerful tool. On the other hand, as finding the best route is a very complicated problem and many criteria should be considered, including slope, landslide, road/railway/pipeline crossing, ice zones, distances to roads, national parks, archaeological areas, residential areas forests, and river crossings, multicriteria decision methods like the analytic hierarchy process (AHP) and fuzzy analytic hierarchy process (FAHP) should be used to make the most accurate decisions. In this study, the AHP and FAHP are used to weight criteria relevant to energy transmission line (ETL) routing. According to the criteria, digital maps of the sample study area are edited, weighted, converted to raster-based format, and gathered using the Environmental Systems Research Institute's ArcGIS Desktop 10 software. After generation of the weighted surface map, the LCP tool is used to find the best route. By selecting different start and end points in the sample study area, accuracy and performance of the best routes according to the LCP algorithm are assessed and some problems of the routes for ETL routing are presented. With this study, mistakes by manual methods will decrease in ETL routing and other routing problems.
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    A real-time extraction of active and reactive current using microcontrollers for a multipulse STATCOM
    (TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2013) Anadol, Mehmet Ali; Aydin, Musa; Yalcinoz, Tankut
    In power transmission and distribution systems, the design of a compensator that adjusts the power factor without causing additional power losses requires the determination of the reactive current components that are going to be supplied into the system. In this study, the determination of the active and reactive current components is achieved via the use of the nonactive power theory and a microcontroller-based control system. The control system has been implemented with low-cost 16-bit microcontrollers. This system was used to control a 3-phase, 12-pulse laboratory-size prototype of a static synchronous compensator (STATCOM) with the structure of a voltage source converter. Verification of the STATCOM and its control circuit were examined via experiments and simulation studies conducted on a single-machine infinite-bus power transmission system. The simulation models for the power and control systems were built by employing the PSCAD/EMTDC program's C programming interface and the graphics-based models in its model library. The experimental results are compared with the results obtained from the PSCAD/EMTDC simulation program.
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    Route Optimization with Q-learning
    (WORLD SCIENTIFIC AND ENGINEERING ACAD AND SOC, 2008) Demircan, Semiye; Aydin, Musa; Durduran, S. Savas
    Due to increasing energy requirement the consideration of route determination is becoming important. The aim of this project is to find optimum result considering its important criteria. In this work, Geographic Information System (GIS) based energy transmission route optimization had been performed. In this optimization, using Multiagent Systems which is subdirectory of Distributed Artificial Intelligence the criteria affecting energy transmission line had been severally analyzed. The application had been actualized on the Selcuk University Campus Area. Therefore the digital map of the campus area particularly had been composed containing of relevant criteria. Using Q-learning Algorithm of Multiagent System the optimum route had been determined.
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    Sample Criteria for Integration of Solar Plant Systems to Electrical Distribution Network
    (IEEE, 2015) Kopacak, Nazmiye; Aydin, Musa
    In the last decades distributed generation became very popular in consequence of its low investment costs and easy installations. Nonetheless distributed generation and its requirements is not a literally well-known topic by the electricity regulators, distribution system operators and supply companies in Turkey. The aim of this paper is to be develop a criterion for connection of solar power plant systems to electrical distribution network and defining technical boundaries as a regard to national procedures and standards. This report provides a schematic overview of the connection conclusions. The connection steps were applied as a result of the current legislations and policies in national electricity regulations. Solutions were also presents an overview of solar plant integration and analyze the impacts of them using load-flow and short-circuit analysis methods. As a result of the methodology some unexpected problems or damages in the network could be prevented.
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    Simulation of a large electric distribution system having intensive harmonics in the industrial zone of Konya
    (TUBITAK SCIENTIFIC & TECHNICAL RESEARCH COUNCIL TURKEY, 2013) Eroglu, Hasan; Aydin, Musa
    In this study, measurements were taken at different points of a sample distribution system in order to analyze the levels of harmonics that appear as a day-to-day increasing problem in electrical distribution systems. According to the measurement values, the dominant harmonics have been determined and an electrical model of the system has been prepared using the SimPowerSystems toolbox from MATLAB and Simulink. The accuracy of the electrical model has been verified by the measurement and simulation values. In addition, the transformer connection types' and impedances' simulations have been presented to understand and solve the harmonic problems in electrical distribution systems. With the help of this study, advanced analysis can be performed in the electrical distribution system for power quality analyses and this study can be a background for similar kinds of simulation studies.
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    Solving power transmission line routing problem using improved genetic and artificial bee colony algorithms
    (SPRINGER, 2018) Eroglu, Hasan; Aydin, Musa
    In engineering studies, finding the best route from a start point to an end point on pixel-based weighted maps is a big problem for researchers. For this problem many methods and algorithms have been developed until now. The "cost distance" (CD) and "cost path" (CP) tools that are used by a modified Dijkstra's algorithm and used by Environmental Systems Research Institute's (ESRI) ArcGIS Desktop 10 software are very fast and most preferred solutions for route optimization problems. Despite the advantages of these tools, they have the disadvantage of making a lot of curves with big angles. Especially in some engineering studies like power transmission lines' routing, the angle of the curves of the lines should not have big values. For overcoming this problem both genetic algorithm (GA) and artificial bee colony (ABC) algorithm that have been improved and adapted for the problem were used as powerful optimizers to find the best routes with fewer curves in those kinds of optimum route problems. New functions like smart direction sensing and improved random functions were developed for application of GA and ABC algorithms in power transmission lines routing studies. This study showed that the ABC algorithm's performance is better than GA. The accuracy of the algorithms was proven by comparing the results with the CD-CP tools' results. The experimental results showed that the improved algorithms gave better performance than Dijkstra's algorithm.