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SCHOOL |
OF ENGINEERING |
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ACADEMIC UNIT |
DEPARTMENT OF ELECTRICAL AND COMPUTER ENGINEERING |
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LEVEL OF STUDIES |
7 |
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COURSE CODE |
ECE_ΒΚ702 |
SEMESTER |
7th |
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COURSE TITLE |
High Voltages |
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INDEPENDENT TEACHING ACTIVITIES |
WEEKLY TEACHING HOURS |
CREDITS |
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LECTURES |
3 |
3 |
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LABORATORY |
3 |
2 |
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Add rows if necessary. The organisation of teaching and the teaching methods used are described in detail at (d). |
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COURSE TYPE general background, |
SPECIALISE GENERAL KNOWLEDGE |
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PREREQUISITE COURSES:
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Basic knowledge on electrical systems |
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LANGUAGE OF INSTRUCTION and EXAMINATIONS: |
Greek. Instructions and examinations may be given in English in case foreign students attended the course. |
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IS THE COURSE OFFERED TO ERASMUS STUDENTS |
YES |
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COURSE WEBSITE (URL) |
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Learning outcomes |
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The course learning outcomes, specific knowledge, skills and competences of an appropriate level, which the students will acquire with the successful completion of the course are described. Consult Appendix A · Description of the level of learning outcomes for each qualifications cycle, according to the Qualifications Framework of the European Higher Education Area · Descriptors for Levels 6, 7 & 8 of the European Qualifications Framework for Lifelong Learning and Appendix B · Guidelines for writing Learning Outcomes |
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At the end of this course the student should have the basic knowledge on the technology of high voltages and their application on transmission, distribution and industrial networks and facilities: ü Basics on the behavior of solid, liquid and gaseous dielectrics ü High Voltage Electric fields, Generation of overvoltages. ü High Voltage network behavior under lightning and switching overvoltages. ü Overvoltage propagation on High Voltage Transmission Lines. ü Regulations and standards for high voltage electrical equipment. ü Insulation coordination in electric power systems ü Electromagnetic interference caused by high voltage power systems. ü High voltage insulating materials and the applied electric fields. ü Risk of failure and reliability of High Voltage equipment. ü Condition monitoring and life assessment of High Voltage equipment. Supervision, stock and maintenance of equipment. ü Laboratory work on the behavior of solid, liquid and gaseous dielectrics, insulation coordination, electromagnetic interference. |
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General Competences |
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Taking into consideration the general competences that the degree-holder must acquire (as these appear in the Diploma Supplement and appear below), at which of the following does the course aim? |
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Search for, analysis and synthesis of data and information, with the use of the necessary technology Adapting to new situations Decision-making Working independently Team work Working in an international environment Working in an interdisciplinary environment Production of new research ideas |
Project planning and management Respect for difference and multiculturalism Respect for the natural environment Showing social, professional and ethical responsibility and sensitivity to gender issues Criticism and self-criticism Production of free, creative and inductive thinking …… Others… ……. |
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LECTURES This course provides the basic knowledge on the technology of high voltages and their application on transmission, distribution and industrial networks and facilities, by teaching the following subjects: The necessity of using High Voltages. The evolution of High Voltage networks in Greece, Europe and worldwide. Basics on the behavior of solid, liquid and gaseous dielectrics. High Voltage Electric fields. High voltage networks and substations. Generation of overvoltages. Low frequency dynamic and transient overvoltages. High Voltage network behavior under lightning and switching overvoltages. Overvoltage propagation on High Voltage Transmission Lines. Regulations and standards for high voltage electrical equipment. The behavior of air and SF6 gaps in different forms of high voltages. Study and design of dielectric insulation of transmission lines and substations. Insulation coordination in electric power systems. Phenomenon Corona in High Voltage Transmission Lines. Electromagnetic interference caused by high voltage power systems. Applications of high voltages in bioengineering and electrostatic precipitators and other industrial operations. High voltage insulating materials and the applied electric fields. Electrical, thermal, mechanical and environmental stresses on electrical insulation. Dielectric strength, aging and breakdown in dielectrics. Technical breakdown in dielectrics. Technical construction characteristics of insulators, cables power and instrument transformers, power capacitors, arresters, fuses, disconnectors and auxiliary equipment, circuit breakers of high voltage networks and substations. Partial discharges and power factor (tanδ). Dielectric layers and interfacial phenomena. Risk of failure and reliability of High Voltage equipment. Condition monitoring and life assessment of High Voltage equipment. Supervision, stock and maintenance of equipment. |
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LABORATORY Practical exercises on High Voltage Laboratory, working with small groups of students (5-6 persons each team), and final report on exercises. This Course provides the fundamental knowledge on the technology of High Voltage and their applications. Among others topics, the Course explicates the standards and regulations for high voltage tests and equipments, dielectrics tests and measurements, different waveforms dielectric tests, Corona discharge, Electromagnetic interference and compatibility (EMC). Furthermore, the essential understanding of the High Voltage equipment (generation of High Voltage and measurement) is provided along with ageing and discharge on electrical insulations and diagnosing the condition of high voltage insulating systems. The installed equipment: • Apparatus of AC Voltage 80kV, DC voltage 400kV and Impulse Voltage 400kV • Apparatus of AC Voltage tests at 100kV intended for High Voltage equipment tests • Equipment for Electric Field tests of insulator strings under AC high Voltage • Apparatus of AC Voltage Breakdown tests of liquid dielectrics • Setup for environmental conditions measurement • Grounding Resistance equipment • Equipment for large scale Resistance (Megger) • Fuel cell • Custom Apparatus for Light emission, Voltage and Current measurement The laboratory Course is consisted of at least the following subjects: 1. Impulse Breakdown test in air 2. Determination of the Voltage distribution along the insulator strings 3. Grounding resistance and ground resistivity measurement. 4. Dielectric Liquids – dielectric strength. 6. Fuel Cell 7. Standardized tests of equipments with Impulse High Voltage |
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DELIVERY |
Face-to face. |
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USE OF INFORMATION AND COMMUNICATIONS TECHNOLOGY |
Lectures and tutorials for the solution of representative problems to clarify the special issues of the theory. All presentations are accessible by the students in the e-class platform together with solved problems. Laboratory education |
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TEACHING METHODS The manner and methods of teaching are described in detail. Lectures, seminars, laboratory practice, fieldwork, study and analysis of bibliography, tutorials, placements, clinical practice, art workshop, interactive teaching, educational visits, project, essay writing, artistic creativity, etc.
The student's study hours for each learning activity are given as well as the hours of non-directed study according to the principles of the ECTS |
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STUDENT PERFORMANCE EVALUATION Description of the evaluation procedure
Language of evaluation, methods of evaluation, summative or conclusive, multiple choice questionnaires, short-answer questions, open-ended questions, problem solving, written work, essay/report, oral examination, public presentation, laboratory work, clinical examination of patient, art interpretation, other
Specifically-defined evaluation criteria are given, and if and where they are accessible to students. |
Greek language is used in the examination procedure. Examinations may be given in English in case of foreign students attended the course. Lectures Exams (LE) are written and includes problems to solve. (minimum passing grade 5 out of 10) Laboratory Reports(LR) (minimum passing grade 5 out of 10) Final grade = 60%(LE) +40%(LR) |
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