HIGH VOLTAGE TECHNOLOGIES AND CONDITION ASSESSMENT

SHE Level 4
SCQF Credit Points 20.00
ECTS Credit Points 10.00
Module Code MHH625270
Module Leader Chengke Zhou
School School of Computing, Engineering and Built Environment
Subject Electrical Power Engineering
Trimester
  • A (September start)

Pre-Requisite Knowledge

Electrical Machines and Power Distribution Systems (or equivalent) and Power Electronic Systems 3 (or equivalent)

Summary of Content

This module examines: Electric field theory, and application in power equipment design; The formation of HV power systems, including the components of generators, transformers, switchgears, cables and overhead lines; The range of insulation materials and systems applied in HV systems and insulation coordination; High voltage safety, commissioning and testing of high voltage (HV) equipment; HVDC systems configuration and adoption; Methods used to monitor and assess insulation in HV equipment; Methods for Chemical and physical diagnosis of insulations; The methods for assessment of High Voltage Equipment (cables, overhead transmission lines, motors, transformers, bushing, etc); The type of sensors to be used in condition monitoring of HV equipment. The student will analyse equipment to determine the likely stresses prevalent, the consequences and design features incorporated to alleviate the problems. The student will apply the knowledge gained to evaluate when, if financially justified, a condition monitoring policy should be adopted and how this should be realized. Analysis of equipment design and ability to explain and justify appropriate condition monitoring methods is embedded in the module. The need for professional engineers to be aware of their impact on profitability of an organization and the ethical impact of the decisions made is inherent to the module. The module activities provide an opportunity for an individual to further develop and demonstrate professional and transferable skills that will prepare them for a career in engineering.

Syllabus

HV Systems: Overview of electric field theory, AC and DC HV plant, insulation systems HV plant items and Insulation materials: generators, transformers, switchgears, cables, insulators etc Stresses in HV equipment: In-service stresses in equipment and systems, i.e. electrical, mechanical, thermal and environmental stresses in motors, generators, transformers, cables, outdoor insulators and circuit breakers. HV system design: insulation system coordination, HV testing/commissioning: the design, commissioning and testing of HV systems HVDC: HVDC system configuration and configuration, applications Basic methods for insulation assessment (Generation and measurement of HV, non-destructive measurements: Insulation resistance, Dielectric dissipation factor, Partial Discharge, Dielectric response) Physical and chemical diagnostic methods (condition of oil-paper system, analysis of SF6, Surface deterioration of composite insulators, water treeing, ultrasonic methods, etc.) Assessment method for overhead line and substation insulators, bushings, Assessment method for cables, power transformers, motors, instrument transformers, switchgear Sensors for insulation condition monitoring (UHF sensors, Optical-fibre: temperature or PD, directional sensors) Online insulation condition monitoring

Learning Outcomes

On completion of this module students should be able to:" Understand the electric field theory and application in HV system design" Understand the concepts of insulation strength, stress and HV design considerations" Evaluate/design the insulation coordination of a given HV system" Evaluate, for a given condition, the likely/possible stresses on a given item of plant or system and application of outcome to the design of power plant components and sub-systems." Understand the process of design, commissioning and testing of HV plant and the mechanisms which stress power plant and systems under typical in-service conditions." For defined equipment and situations, outline the measurable phenomena appropriate to condition monitoring and assessment." For defined equipment and situations, outline advantages and disadvantages of adopting a condition monitoring technique." Evaluate, for a given situation, the specific instrumentation to be used and the measurement strategy..

Teaching / Learning Strategy

The main teaching method will be lecture/seminars with industrial visits or guest lectures to relate theoretical concepts to practical experience. The materials presented will, in addition to using pertinent information from books and journals, draw upon experience and resources available to staff through relevant EPSRC funded work and industrial collaboration carried out by staff. Students will be expected to undertake directed reading and self-learning exercises on topics related to High Voltage Technologies and Condition Assessment prior to lectures and as the basis for coursework. Tutorials and laboratory demonstrations will be used to reinforce the module material and to discuss issues raised by the directed reading. Students are provided with feedback on coursework within 3 working weeks of submission. Feedback is also provided via a variety of mechanisms, including during the meeting with their group mentor/supervisor.

Indicative Reading

Condition Assessment of High Voltage Insulation in Power System Equipment, R.E. James and Q.Su, IET, 2008. High Voltage Engineering: fundamentals, E. Kuffel, Elsvier,, 2000, GCU library ebook. High Voltage Engineering Practice and Theory, Dr JP Holtzhausen/Dr WL Vosloo, Wiley, 2011, ISBN: 978 - 0 - 620 - 3767 - 7, Transmission and distribution electrical engineering: Bayliss & Hardy: 2011 Condition Monitoring of Rotating Electrical Machines: Tavner, Ran, Penman & Sedding: 2008 Advances in High Voltage Engineering: Haddad & Warne: 2004 High Voltage engineering and testing: Ryan: 2001 Electrical Degradation & Breakdown in Polymers: Dissado & Fothergill, Peter Peregrinus: 1992 Appropriate current research journals, e.g. IEEE Transactions, CIGRE Electra

Transferrable Skills

Specialist knowledge and application - gained through lecture/seminars, tutorials and independent learning. Critical thinking and problem solving - demonstrated through coursework and examination. Critical analysis - demonstrated through coursework. Communication skills, written, oral and listening - demonstrated through coursework report writing. Numeracy - demonstrated through examination. Effective Information retrieval and research skills - demonstrated through coursework. Computer literacy - demonstrated through use of appropriate software for retrieving information and analyzing data. Self confidence, self discipline & self reliance (independent working). Knowledge of international affairs - through awareness of developments in, and need for compatibility of, HV technologies being applied across the globe and the interaction of HV systems. Appreciating and desiring the need for continuing professional development - through being asked to consider future of technologies which are being applied. Reliability, integrity, honesty and ethical awareness - gained through lecture/seminars and independent learning. Ability to prioritise tasks and time management (organising and planning work) - balancing module needs with other module requirements and external activities. Presentation skills - gained through report writing for coursework. Commercial awareness - gained through lecture/seminars and independent learning

Module Structure

Activity Total Hours
Lectures (PT) 24.00
Assessment (PT) 20.00
Lectures (FT) 24.00
Independent Learning (FT) 120.00
Laboratory Workshops 12.00
Tutorials (FT) 24.00
Laboratory Workshops 6.00
Tutorials (PT) 12.00
Independent Learning (PT) 138.00
Assessment (FT) 20.00

Assessment Methods

Component Duration Weighting Threshold Description
Exam (Exams Office) 3.00 70.00 35% Invigilated, closed book examination of the module materialsAggregate pass mark: 40%
Coursework 1 n/a 30.00 35% Report on design or operation of HV component or system