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Instructors: Prof. Dr.-Ing. Volker Hinrichsen; Mohammad Hossein Nazemi
Event type:
Lecture
Org-unit: Dept. 18 - Electrical Engineering and Information Technology
Displayed in timetable as:
Überspannungsschutz
Subject:
Crediting for:
Hours per week:
2
Language of instruction:
Englisch
Min. | Max. participants:
- | -
Course Contents:
- Introduction, basics and overview
- Determination of representative overvoltages
- Origin and classification of overvoltages
- Normal distribution of overvoltage probability and derivated variables
- Operating voltage and temporary overvoltages
- Slow front overvoltages
- Fast front overvoltages
- Characteristics of overvoltage protective devices
- Operation and design of metal-oxide surge arresters
- Travelling wave effect and protective distance of surge arresters
- Representative voltage and overvoltages in the case of using surge arresters
- Determination of coordination withstand voltage
- Insulation strength for different voltage shapes and geometric configurations (gap factors)
- Performance criterion
- Insulation coordination procedure
- Determination of required withstand voltage
- General remarks
- Atmospheric correction
- Safety factor for internal and external insulations
- Standard withstand voltage and testing procedures
- General remarks
- Test conversion factors
- Determination and verification of insulation withstand by type tests
- Table of test voltages and required clearances
Literature:
The related IEC standard can be borrowed during the lecture time. Lecture notes (in English) and other helpful materials can be downloaded from HST homepage: www.hst.tu-darmstadt.de.
- "V. Hinrichsen", script notes
- IEC Std. 60071-1 & 2
- IEEE Std. 1313-1 & 2
- IEC 60099-Series
- CIGRE W.G. 33-01 & 02 & 06 & 07
- "A. R. Hileman", Insulation Coordination for Power Systems
- "V. Hinrichsen", Metal-Oxide Surge Arrester Fundamentals
- "R. Rudolph, B. Richter", Dimensioning, testing and application of metal oxide surge arresters in medium voltage networks
- "L. Thione", Insulation coordination in electrical power systems – theory and application
Preconditions:
High Voltage Technology I and II
Expected Number of Participants:
40
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