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This course focuses on two aspects. The first topic is the design of electrical machines from first principles including transformers, rotating machines, and electroheaters. The second topic covers industry-standard high-voltage testing of generators, power transformers and cables.
Firstly, students will learn about the principles and practice of Earth grid design.Secondly, students will learn about applications of Power Electronics in Power Systems. This includes grid-supporting reactive power compensation circuits, and the system stability challenges of Inverter based Resources. Inverter control structures and their effects on the power supply network are examined in a rotating reference frame.Thirdly, students will learn about high-voltage electric fields and how to make measurements required for the condition assessment of electric machines in the electric power industry. We will cover industry-standard high-voltage testing necessary when buying new equipment, upgrading existing equipment, or performing investigations. These tests are applicable to generators, motors, cables, and transformers.• Earth grid design, earth grid voltage rise, management of step and touch potentials.• Power Electronic Static Vars Compensator and STATCOM circuits. Inverter Based Resource control structures and their properties. Park’s transformation and Phase Locked Loops. Grid Following and Grid Forming inverters.• Electric Fields, Stress and Breakdown: Basic field theory, Maxwell’s equations, Electric field mapping, Discharges in gases, liquids and solids, Statistical treatment of high voltage testing.• High Voltage Engineering: High voltage measurement systems, Estimation of uncertainty, Partial discharge causes, models and measurements, AC withstand testing, Impulse testing.• Electrical Machine Testing: Electrical testing of power transformers, Generator stator and rotor testing, Insulation oils, oil quality and dissolved gas analysis.
At the conclusion of this course you should be able to:• LO1: Understand, design and analyse Electric Power System Earth grid systems (WA1, WA2, WA3, WA5)• LO2: Understand the reasons for, and the different types of controlled reactive compensation (WA1, WA2, WA3, WA4, WA5)• LO3: Understand the grid support functions of Inverter Based Resources in an Electric Power System, understand the common control strategies and their implications for stability.• LO4: Demonstrate theoretical and practical knowledge of insulation systems and test equipment used in high-voltage engineering. (WA1, WA4, WA5, WA9)• LO5: Apply industry-standard condition monitoring, assessment and testing techniques for electrical machines, accounting for quality and safety (WA1, WA2, WA3, WA4, WA5, WA6, WA12)• LO6: Communicate the design of complex electrical machine systems in written form (WA10)
This course will provide students with an opportunity to develop the Graduate Attributes specified below:
Critically competent in a core academic discipline of their award
Students know and can critically evaluate and, where applicable, apply this knowledge to topics/issues within their majoring subject.
Employable, innovative and enterprising
Students will develop key skills and attributes sought by employers that can be used in a range of applications.
ENEL382
Students must attend one activity from each section.
Andrew Lapthorn
Alan Wood
Carlsson, A., Wegscheider, F., Schemel, G. and Fuhr, J; Testing of power transformers and shunt reactors ; 2nd Edition; ABB Ltd, 2010.
Hauschild, W. and Lemki, E; High-Voltage Test and Measuring Techniques ; Springer-Verlag Berlin, 2014.
Artificial Intelligence ToolsThe use of Artificial Intelligence (AI) tools for the assessment in ENEL481 is summarised in the Table below. No AI use is allowed in the test and exam because these are closed-book invigilated assessments. Students are always responsible for the accuracy of the submitted works, regardless of which tools are used.Assessment Item and Permitted use of AI.Assignment: Generative AI tools are permitted for certain parts of this assessment.Tests: Generative AI tools cannot be used for this assessment.Exam: Generative AI tools cannot be used for this assessment.Generative AI Tools Are Permitted for Certain Parts of This Assessment:In these assessments (Assignment), you are permitted to use generative artificial intelligence (AI) for the purpose of proof reading and editing the document, and for gathering and summarising knowledge. No other use of generative AI is permitted. To assist with maintaining academic integrity, you must appropriately acknowledge any use of generative AI in your work. Please include a Statement of AI use (if no AI tool has been used, then this must also be stated) and a listing of all prompts provided to the AI tool, clearly indicating which AI tools wereand how they contributed to your assessment.
The examiners will award a failing grade to students who score less than 40% for the Tests and Exam combined. More formally, (Test1Percent * 0.5 + ExamPercent * 0.3) / 0.8 must be greater than or equal to 40 for a pass mark to be awarded. This note is put in place to ensure that each student has adequately shown to the examiners they have gained some mastery of the topic.In order to maintain consistency across courses and fairness for students, scaling of raw marks occurs. In the Faculty of Engineering, target course GPAs are calculated based on the performance of the cohort of students in their courses in the previous year. Scaling of the raw total course marks is normally performed so that when converted to grades (using UC Grade Scale) the outgoing GPA is in line with the target GPA for a course. Scaling up or down can occur.The Grading Scale for the University:https://www.canterbury.ac.nz/study/study-support-info/study-related-topics/grading-scale
Lateness PenaltiesFor the Lab Test Plan and Assignment Report, a lateness penalty of 10% (in absolute terms) per day or part day late will be deducted from the original mark. For example, an assignment with a nominal mark of 83% submitted 0-24 hours late will receive a mark of 73%, and submitted 24-48 hours late will receive 63%.
Contact HoursLectures: 36 hoursTutorials: 0 hoursWorkshops: 0 hoursLaboratories: 3 hours Independent studyReview of lectures: 30 hoursTest and exam preparation: 31 hoursAssignments: 40 hours Laboratory Calculations: 10Total 150 hours
Domestic fee $1,344.00
International fee $6,488.00
* All fees are inclusive of NZ GST or any equivalent overseas tax, and do not include any programme level discount or additional course-related expenses.
For further information see Electrical and Computer Engineering .