Now showing items 21-30 of 72
Application of quantitative feedback theory to robust power system stabiliser design.
This thesis aims to verify the use of quantitative feedback theory (QFT) as a viable tool for designing power system stabilisers (PSS) for a single machine infinite bus system. The result of the QFT design is verified by ...
An in-depth study into the various factors contributing to the unexplained line faults on a large high voltage network.
The Eskom Transmission Network experiences an exceptionally high number of line faults, the cause of which, may not be correctly identified. This thesis analyses a number of all the possible factors responsible for causing ...
Safety of low voltage switchgear STAs in South Africa – Part 2.
(EE Publishers., 2005)
This article is Part 2 of a two part article. Part 1 was published in the October 2005 issue of ENERGIZE. A technical analysis was undertaken to investigate the safety implications of the introduction of the category ...
Suppression of transients across the tap windings of an auto-transformer.
(EE Publishers., 2005-06)
For the energy transfer between the various voltage levels of the Eskom national grid, auto-transformers are mainly installed. These auto-transformers are interfaced with the distribution network.
Life assessment and life extension of high voltage equipment in transmission substations.
In order to sustain transmission grid availability and reliability it is imperative that the condition of vital and costly high voltage equipment is ascertained on a continuous or regular basis. It is necessary to ...
A theoretical and experimental investigation into fire induced flashover of high voltage transmission lines.
This thesis documents a research study of High Voltage transmission line faults induced by fire. Conductor to conductor and conductor to ground flashovers have been experienced by electricity utilities around the world ...
Compound codes based on irregular graphs and their iterative decoding.
Low-density parity-check (LDPC) codes form a Shannon limit approaching class of linear block codes. With iterative decoding based on their Tanner graphs, they can achieve outstanding performance. Since their rediscovery ...
Modelling and analysis of inverter-based facts devices for power system dynamic studies.
Flexible AC Transmission Systems (FACTS) involves the incorporation of power-electronic controlled devices into ac power transmission systems in order to extend the power-transfer capability of these systems beyond their ...
An application specific low bit-rate video compression system geared towards vehicle tracking.
The ability to communicate over a low bit-rate transmission channel has become the order of the day. In the past, transmitted data over a low bit-rate transmission channel, such as a wireless link, has typically been ...
The detection of fires under high voltage transmission lines.
Fires generate heat and propel burning material into the air above and around the core of the fire. Fires under power lines reduce the breakdown strength of the air insulation due to the influence the heat and particles ...