EE4-53 High Voltage Technology and HVDC Transmission
Lecturer(s): Dr Balarko ChaudhuriAims:
Use of high voltages is the key to efficient transmission and distribution of electrical power. Insulation, separating such high voltages from ground, play a vital role in ensuring safe and secure operation of the system especially under over voltage conditions. The objective of this course is to provide an overview about different forms of insulation and their behaviour, over voltage conditions and protection of equipments. Special emphasis would be given on linking the theoretical concepts with the practical applications.
High voltage direct current (HVDC) is often a preferred technology for overhead power transmission over long distances and under-ground cables for relatively shorter distances. A bulk of the new offshore transmission infrastructure in the UK and worldwide is envisaged to be employing HVDC. In this context, the second part of the course would give an introduction to the HVDC technology; its advantages (and disadvantage) over conventional AC transmission; operation and control of HVDC and it’s interaction with the existing AC transmission network. Emerging technologies through use of voltage source converters would be covered.
Learning Outcomes:
The module on ‘High Voltage Technology’ would facilitate a basic understanding about high voltage insulators, cables, bushings, occurrence of over voltages and protection of HV equipments from failure due to over voltage. The second half of the course on ‘HVDC Transmission’ would outline the benefits of using DC transmission, how the terminal converters are operated and controlled, interaction of the HVDC system with the AC systems and voltage source converter (VSC) based HVDC technology.
Syllabus:
1) High Voltage Technology: Introductions, HV Insulators, HV Cables, Corona, HV Bushings, Over voltage phenomena, Surge Arresters and Insulation Coordination
2)HVDC Transmission: Introduction - AC vs DC, HVDC schemes, Converter Operation, Converter Control, Harmonics, Interaction with AC systems, Voltage Source Converter (VSC) based HVDC systems
Assessment:
Coursework contribution: 0%
Term: Autumn
Closed or Open Book (end of year exam): Closed
Coursework Requirement
nil
Oral Exam Required (as final assessment): N/A
Prerequisite: EE3-13 - Electrical Energy Systems and EE3-14 - Power Electronics
Course Homepage: http://learn.imperial.ac.uk
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