PLT 403 Introduction to High Voltage Technology Mardianaliza

PLT 403 Introduction to High Voltage Technology Mardianaliza Othman

What is High Voltage? Based on International Electrotechnical Commission (IEC Standard, 1983), the term high voltage can be defined as any work or test conducted at a voltage level at/or greater than 1000 V AC (1 k. V) or at/or greater than 1200 V DC (1. 2 k. V). IEC –International Electrotechnical Commission

Voltage classification- In general

Elements of High Voltage technologies encompassed involvement in various elements/fields of engineering and science studies, e. g. : – energy transmissions, (power station transmission line consumer – circuit analysis, (aircraft) – transient recording, (switching) – testing materials, – physic and chemical, – phenomenon governing electrical properties of insulating materials and etc.

History of High Voltage Engineering High voltage history began with the induction coils constructed in 1836 by Nicholas Callan (Maynooth College, Dublin England). The ‘Callans Great Coils’ induced voltage above 100 k. V but it was only used for academic purposes. In 1886, Karoly Zipenowski and friends, engineers from Ganz in Hungary patented the first transformer. The transformer invention was a key to open the door leading to efficient and effective power system. Then high voltage power system were installed throughout the world.

• In the UK, the 132 k. V ac system was install in 1920 s, following with 275 k. V in 1950 s and 400 k. V in 1960 s. • Higher voltage were introduced overseas at 750 k. V in 1960 s and 1100 k. V in the 1970 s. • Transmission line in Malaysia mostly for HVAC transmission, with a short portion HVDC to Thailand. The transmission system ac voltage are 132 k. V, 275 k. V and 500 k. V.

Electrical Power System in Malaysia

Typical Substation

Instrument Transformers (Current/Potential transformer)

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