Course

HST - High Voltage Technology


PDF Course Catalog Deutsche Version: HST

Version: 2 | Last Change: 15.09.2019 21:05 | Draft: 0 | Status: vom verantwortlichen Dozent freigegeben

Long name High Voltage Technology
Approving CModule HST_BaET
Responsible
Prof. Dr. Christof Humpert
Professor Fakultät IME
Level Bachelor
Semester in the year winter semester
Duration Semester
Hours in self-study 60
ECTS 5
Professors
Prof. Dr. Christof Humpert
Professor Fakultät IME
Requirements Atomic model and energy-band model
Impedances in the AC circuit
Complex AC calculation
Three-phase system
Alternating electric field
Dielectric material properties
Language German
Separate final exam Yes
Literature
Küchler; Hochspannungstechnik (Springer)
Beyer, Boeck, Möller, Zaengle; Hochspannungstechnik (Springer)
Hasenpusch; Hochspannungstechnik - Einführung und Grundlagen (Franzis)
Hilgarth; Hochspannungstechnik (Teubner)
Kind, Feser; Hochspannungsversuchstechnik (Vieweg)
Final exam
Details
Written examination, in some cases also oral examination, with the following content:
- Free text answers to inquire about the necessary knowledge (e.g., typical breakdown voltages of insulating arrangements or types of high voltage equipment)
- Free-text answers and drawing diagrams to explain mechanisms of discharge development and discharge and arc extinction
- Text exercises for the calculation, dimensioning and analysis of insulation arrangements
Minimum standard
50% of the questions and tasks correctly solved
Exam Type
Written examination, in some cases also oral examination, with the following content:
- Free text answers to inquire about the necessary knowledge (e.g., typical breakdown voltages of insulating arrangements or types of high voltage equipment)
- Free-text answers and drawing diagrams to explain mechanisms of discharge development and discharge and arc extinction
- Text exercises for the calculation, dimensioning and analysis of insulation arrangements

Learning goals

Knowledge
High voltage grids, types, requirements, function
Electrical stress due to operational and overvoltages, types of overvoltages
High voltage insulating materials
- Gaseous insulating materials: discharge development, air and SF6, Paschen law, spark and arc discharge
- Solid insulating materials: Discharge development, layered arrangements, partial discharges, aging, discharges along insulating surfaces
- Liquid insulating materials: discharge development, oil-paper insulation, liquid nitrogen
- Vacuum insulation: Discharge development, influence of contact materials
Equipment of high voltage technology
- Requirements for equipment, in particular for switchgear and switching devices
- Switchgear: air-insulated switchgear, outdoor switchgear, SF6-insulated switchgear
- Circuit breakers: principles of arc quenching, SF6 circuit breakers, vacuum circuit breakers
- Other equipment: cables, transformers

Skills
Analyze discharge processes in gases, liquids and solids
- Explain and apply dependence on boundary conditions (pressure, material, electrode distance)
- Give reasons for the dependence on degree of inhomogeneity
- Determine the influence of the voltage shape
- Calculate ignition and breakdown voltages
Dimension and design insulating arrangements
- Uniform, weakly non-uniform and strongly non-uniform insulation arrangements in gases
- Arrangements of solids, transverse and longitudinal lamination
- Paper-oil insulation arrangements
Select and dimension switchgear and switchgear
- Select switching principle depending on the required functions
- Select a suitable arc extinguishing principle depending on the voltage shape and height
Expenditure classroom teaching
Type Attendance (h/Wk.)
Lecture 2
Exercises (whole course) 2
Exercises (shared course) 0
Tutorial (voluntary) 0
Special literature
keine/none
Special requirements
none
Accompanying material
Electronic presentation slides for the lecture
Detailed exercise task collection with solutions
Electronic tutorials for self-study, questionnaire and task help sheets
Software tool for simplified calculation of electric field distributions
Separate exam
none

Learning goals

Knowledge
Safety in the high voltage laboratory
- Compliance with safety distances
- Behavior in the test field
- Safety devices and systems
Basics of generation and measurement of high voltages
Discharge development in different gases in different electrode arrangements

Skills
Plan high voltage tests and perform them safely
- Analyze, modify and verify experimental setups
- Apply security rules
Use the electric field calculation tool and judge the accuracy of the results
Measure high voltages
- Apply and compare different measurement methods
- Calculate voltage ratio of measuring equipment
Measure ignition and breakdown voltages
- Record and evaluate test results
- Explain results with discharge models
- Justify and explain deviations from the theory
Manage complex tasks in a team
Summarize, evaluate and interpret results in written form
Expenditure classroom teaching
Type Attendance (h/Wk.)
Practical training 1
Tutorial (voluntary) 0
Special literature
keine/none
Special requirements
none
Accompanying material
Electronic tutorials and task collections for the lab exercises
Software tool for simplified calculation of electric field distributions
Separate exam
Exam Type
working on projects assignment with your team e.g. in a lab)
Details
Written test to control the preparation of the lab excercises
Evaluation of the preparatory documents (calculation results)
Evaluation of the discussion with the students and of the lab exercises on the basis of a structured protocol
Evaluation of detailed reports of the lab exercises of the team
Minimum standard
70 % of the written test correctly
80% of the prepared calculation results correct
80 % of the measurement results correct
80 % of the evaluation performed correctly
80 % of the discussion makes sense

© 2022 Technische Hochschule Köln