Task 2: In the HV Course you have learnt about conduction and breakdown mechanisms in gas, liquid and solid insulation. Discuss how the different insulation technologies can be used in the design and construction optimization of each of the following types of HV sources: (1) cascaded transformers (HVAC). (1) cascaded Cockcroft-Walton (HVDC) source and (11) Multistage impulse voltage generator. Remember that in every case, it is about the need to keep electrons in their rightful place! N.B. This is a somewhat open-ended question testing your competencies in the application of high voltage engineering knowledge to creatively design different high voltage sources. In that regard you are expected to demonstrate knowledge of the typical component arrangement and construction in each type of high voltage source. Also be cognisant of typical challenges with insulation requirements and the corresponding mitigations through appropriate selection and application of insulation material. [50 marks] Notes: In order to effectively tackle this exam equivalent assignment, you need to have built up knowledge using the resources available in the HV Course. Text books are available in the University information resources database. The rest of the material, some of which are listed below, are available at the Course website on Ulwazi. SANS 60060-1; High Voltage Test Techniques Part 1: General Definitions and Test Requirements, 1989. IEEE Std 4-1995; IEEE Standard Techniques for High-Voltage Testing. 1995. URL link for downloading the FEMM installation file . Task 2: In the HV Course you have learnt about conduction and breakdown mechanisms in gas, liquid and solid insulation. Discuss how the different insulation technologies can be used in the design and construction optimization of each of the following types of HV sources: (1) cascaded transformers (HVAC). (1) cascaded Cockcroft-Walton (HVDC) source and (11) Multistage impulse voltage generator. Remember that in every case, it is about the need to keep electrons in their rightful place! N.B. This is a somewhat open-ended question testing your competencies in the application of high voltage engineering knowledge to creatively design different high voltage sources. In that regard you are expected to demonstrate knowledge of the typical component arrangement and construction in each type of high voltage source. Also be cognisant of typical challenges with insulation requirements and the corresponding mitigations through appropriate selection and application of insulation material. [50 marks] Notes: In order to effectively tackle this exam equivalent assignment, you need to have built up knowledge using the resources available in the HV Course. Text books are available in the University information resources database. The rest of the material, some of which are listed below, are available at the Course website on Ulwazi. SANS 60060-1; High Voltage Test Techniques Part 1: General Definitions and Test Requirements, 1989. IEEE Std 4-1995; IEEE Standard Techniques for High-Voltage Testing. 1995. URL link for downloading the FEMM installation file
