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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ftcanadathes:oai:collectionscanada.gc.ca:MWU.1993/6629 2023-05-15T17:14:23+02:00 Aspects of conversion of the Nelson River bipole 2 HVDC converters from 12-pulse to 6-pulse operation Kolt, Robert A. 2012-05-18T19:10:32Z http://hdl.handle.net/1993/6629 unknown http://hdl.handle.net/1993/6629 2012 ftcanadathes 2014-03-30T00:51:21Z 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. Other/Unknown Material Nelson River Theses Canada/Thèses Canada (Library and Archives Canada) |
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Open Polar |
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Theses Canada/Thèses Canada (Library and Archives Canada) |
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unknown |
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. |
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 |
2012 |
url |
http://hdl.handle.net/1993/6629 |
genre |
Nelson River |
genre_facet |
Nelson River |
op_relation |
http://hdl.handle.net/1993/6629 |
_version_ |
1766071760392814592 |