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Measurement of conducted electromagnetic noise generated by static var compensators
Thesis (MEng) -- Stellenbosch University, 1997.
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| Format: | Thesis |
| Language: | en_ZA |
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Stellenbosch : Stellenbosch University
2012
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| _version_ | 1867613880694341632 |
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| access_status_str | Open Access |
| author | Botha, Melanie |
| author2 | Cloete, J. H. |
| author_browse | Botha, Melanie Cloete, J. H. |
| author_facet | Cloete, J. H. Botha, Melanie |
| author_sort | Botha, Melanie |
| collection | Thesis |
| dc_rights_str_mv | Stellenbosch University |
| description | Thesis (MEng) -- Stellenbosch University, 1997. |
| format | Thesis |
| id | oai:scholar.sun.ac.za:10019.1/55584 |
| institution | Stellenbosch University (South Africa) |
| language | en_ZA |
| last_indexed | 2026-06-10T12:43:10.408Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from SUNScholar — Stellenbosch University Repository |
| publishDate | 2012 |
| publishDateRange | 2012 |
| publishDateSort | 2012 |
| publisher | Stellenbosch : Stellenbosch University |
| publisherStr | Stellenbosch : Stellenbosch University |
| record_format | dspace |
| source_str | SUNScholar — Stellenbosch University Repository |
| spelling | oai:scholar.sun.ac.za:10019.1/55584 Measurement of conducted electromagnetic noise generated by static var compensators Botha, Melanie Cloete, J. H. Enslin, J. H. R. Stellenbosch University. Faculty of Engineering. Dept. of Electrical and Electronic Engineering. Electromagnetic noise Power electronics Electronic circuits -- Noise Electromagnetic interference Capacitors, Synchronous UCTD Thesis (MEng) -- Stellenbosch University, 1997. ENGLISCH ABSTRACT: Conducted Electromagnetic Interference poses potentially serious problems to power line carrier equipment used by electric utilities. The interference found by Eskom during measurements at Perseus substation in 1985 provided the grounds for the study on which this thesis is based. At Perseus up to 30 dB of noise was added in the power line carrier frequency band, but fortunately the power line carrier and the noise lie at different frequencies and no disruptive interference resulted. ·when much less noise was measured at the Impala SVC in 1995, this study was initiated to determine the reasons for the differences. The generic noise characteristics of SVCs were investigated by building a scale model of the SVC at Impala substation. The influence of the different components of an SVC on its noise was studied, as well as various measurement techniques . When the study began in January 1996, a ll indications were that the SVC planned for Muldersvlei substation would be very similar to the Impala SVC. Because the Muldersvlei substation is less than 20 km from Stellenbosch, it was thought that the results obtained with the model could be compared with field measurements after commissioning of the new SVC in March 1997. Later it was found that the Muldersvlei SVC circuit was different, but these differences could not be implemented in the scale model at that stage . Noise measurements at the Muldersvlei SVC substation were nevertheless performed . The model and full-scale measurements were compared to assess the usefulness of such an SVC model to predict the EMI characteristics of a full-scale SVC install ation. This was complemented with some software simulations. It was found that the SVC scale model is a useful tool to demonstrate the operation of an SVC as we ll as predict the conducted el ectromagnetic noise generated by SVCs. AFRIKAANSE OPSOMMING: Daar bestaan 'n moontlikheid van geleide Elektromagnetiese Interferensie met die kraglyn kommunikasie toerusting van Eskom. Hierdie moontlikheid is bevestig deur metings in die kraglyn draer (power line carrier) frekwensieband by die Statiese Var Kompenseerder ( Static Var Compensator) by Perseus substasie. Tot 30 dB ruis is bygevoeg deur die SVC . Die ruis en die kraglyn draer frekwensies verskil egter in so 'n mate dat die interferensie nie skadelik is nie. Toe laer ruisvlakke gemeet is by die Impala substasie SVC in 1995 , is hierdie ondersoek geloods om die verskille te ondersoek. Hierdie tesis is 'n ondersoek na die generiese ruis karakteristieke van SVCs. Met hierdie doel voor oe, is 'n fisiese skaalmodel van die Impala SVC gebou. Die invloed van die onderskeie komponente van 'n SVC kon met behulp van hierdie model bepaal word asook verskeie meetmetodes. Di e oorspronklike aanduidings in Januarie 1996 toe die navorsingsprojek begin is , was dat di e Muldersvlei SVC dieselfde as die I mpala SVC sou wees en daarom is die model ' n geskaleerde weergawe van die Impala SVC. Aangesien die Muldersvlei substasie ongeveer 20 km bui te Stellenbosch is, is besluit dat die model metings maklik met veld metings by die betrokke SVC verge lyk kan word. Teen die tyd dat die verskille tussen die twee SVCs bekend geword het, kon die model ni e meer verander word nie . Metings by die Muldersvlei s ubstasie is wel onderneem. Vergelykings tussen die model en vo lskaal metings is ook gedoen om die bruikbaarheid van sulk e skaalmodell e in die voorspelling van vo lskaa l SVCs se ruiskarakteristieke te bepaal. Sagteware simulasies is gedoen om hierdie r es ult ate te ondersteun. Daar is gevind dat die skaalmodel SVC 'n nuttige komponent is om die werking van ' n SVC te demonstreer sowel as om die geleide geraas van SVCs te voorspe l. Masters 2012-08-27T11:37:07Z 2012-08-27T11:37:07Z 1997-12 Thesis http://hdl.handle.net/10019.1/55584 en_ZA Stellenbosch University ix, 114 pages : illustrations (some color) application/pdf Stellenbosch : Stellenbosch University |
| spellingShingle | Electromagnetic noise Power electronics Electronic circuits -- Noise Electromagnetic interference Capacitors, Synchronous UCTD Botha, Melanie Measurement of conducted electromagnetic noise generated by static var compensators |
| title | Measurement of conducted electromagnetic noise generated by static var compensators |
| title_full | Measurement of conducted electromagnetic noise generated by static var compensators |
| title_fullStr | Measurement of conducted electromagnetic noise generated by static var compensators |
| title_full_unstemmed | Measurement of conducted electromagnetic noise generated by static var compensators |
| title_short | Measurement of conducted electromagnetic noise generated by static var compensators |
| title_sort | measurement of conducted electromagnetic noise generated by static var compensators |
| topic | Electromagnetic noise Power electronics Electronic circuits -- Noise Electromagnetic interference Capacitors, Synchronous UCTD |
| url | http://hdl.handle.net/10019.1/55584 |
| work_keys_str_mv | AT bothamelanie measurementofconductedelectromagneticnoisegeneratedbystaticvarcompensators |