Aspects of conversion of the Nelson River bipole 2 HVDC converters from 12-pulse to 6-pulse operation
In the early months of 1979, Manitoba Hydro was confronted with a serious problem involving the converter transformers for the bipole 2 operation of the Nelson River HVDC transmission system. The transformer problem left the negative pole of bipole 2, pole 3, without a converter transformer at each...
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Format: | Master Thesis |
Language: | English |
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1981
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ftunivmanitoba:oai:mspace.lib.umanitoba.ca:1993/6629 2023-06-18T03:41:45+02:00 Aspects of conversion of the Nelson River bipole 2 HVDC converters from 12-pulse to 6-pulse operation Kolt, Robert A. 1981 vi, 40 leaves : application/pdf http://hdl.handle.net/1993/6629 eng eng ocm72783631 http://hdl.handle.net/1993/6629 open access master thesis 1981 ftunivmanitoba 2023-06-04T17:38:31Z In the early months of 1979, Manitoba Hydro was confronted with a serious problem involving the converter transformers for the bipole 2 operation of the Nelson River HVDC transmission system. The transformer problem left the negative pole of bipole 2, pole 3, without a converter transformer at each converter station. Since the transformer outage was forseen to be a lengthy one, the system had a reduced transmission capability firstly due to the direct loss of the negative pole and secondly due to the necessity to operate the positive pole continuously in a monopolar mode which affects adversely the lifetime of the earth electrode. Studies were therefore undertaken by Manitoba Hydro to investigate the feasibility of making the equipment, designed for 12-pulse, perform in a 6-pulse mode. The results of the studies proved favourable and with the approval of the HVDC Working Group, who are the dc equipment suppliers, the negative pole of the bipole 2 was operated in a 6-pulse configuration successfully for a year. The cost of the studies and modifications to the equipment were minimal and both Manitoba Hydro and the Working Group benefited greatly from this engineering exercise. Master Thesis Nelson River MSpace at the University of Manitoba |
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Open Polar |
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MSpace at the University of Manitoba |
op_collection_id |
ftunivmanitoba |
language |
English |
description |
In the early months of 1979, Manitoba Hydro was confronted with a serious problem involving the converter transformers for the bipole 2 operation of the Nelson River HVDC transmission system. The transformer problem left the negative pole of bipole 2, pole 3, without a converter transformer at each converter station. Since the transformer outage was forseen to be a lengthy one, the system had a reduced transmission capability firstly due to the direct loss of the negative pole and secondly due to the necessity to operate the positive pole continuously in a monopolar mode which affects adversely the lifetime of the earth electrode. Studies were therefore undertaken by Manitoba Hydro to investigate the feasibility of making the equipment, designed for 12-pulse, perform in a 6-pulse mode. The results of the studies proved favourable and with the approval of the HVDC Working Group, who are the dc equipment suppliers, the negative pole of the bipole 2 was operated in a 6-pulse configuration successfully for a year. The cost of the studies and modifications to the equipment were minimal and both Manitoba Hydro and the Working Group benefited greatly from this engineering exercise. |
format |
Master Thesis |
author |
Kolt, Robert A. |
spellingShingle |
Kolt, Robert A. Aspects of conversion of the Nelson River bipole 2 HVDC converters from 12-pulse to 6-pulse operation |
author_facet |
Kolt, Robert A. |
author_sort |
Kolt, Robert A. |
title |
Aspects of conversion of the Nelson River bipole 2 HVDC converters from 12-pulse to 6-pulse operation |
title_short |
Aspects of conversion of the Nelson River bipole 2 HVDC converters from 12-pulse to 6-pulse operation |
title_full |
Aspects of conversion of the Nelson River bipole 2 HVDC converters from 12-pulse to 6-pulse operation |
title_fullStr |
Aspects of conversion of the Nelson River bipole 2 HVDC converters from 12-pulse to 6-pulse operation |
title_full_unstemmed |
Aspects of conversion of the Nelson River bipole 2 HVDC converters from 12-pulse to 6-pulse operation |
title_sort |
aspects of conversion of the nelson river bipole 2 hvdc converters from 12-pulse to 6-pulse operation |
publishDate |
1981 |
url |
http://hdl.handle.net/1993/6629 |
genre |
Nelson River |
genre_facet |
Nelson River |
op_relation |
ocm72783631 http://hdl.handle.net/1993/6629 |
op_rights |
open access |
_version_ |
1769007410779783168 |