Applying an Exponentially Weighted Moving Average control chart using flow history and assured energy levels to small hydroelectric power plants
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | RBRH (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312020000100239 |
Resumo: | ABSTRACT Small hydroelectric power plants make up 6 GW of installed capacity in Brazil. However, electricity generation at the plants has been below their expected Assured Energy Levels (AELs) recently. This paper analyzes the flow history of 24 plants using exponential moving average control charts in an attempt to verify whether climate change or land use and occupation could have changed the average annual flow available in the basin over time. The graphs showed neither a decreasing or increasing trend in average flows, but rather showed a recurring number of out-of-control points, which proves the sensitivity of assured energy to hydrological variations and the need to evaluate the use of daily average flow rates for calculating and analyzing the energy generated by small power plants. |
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Applying an Exponentially Weighted Moving Average control chart using flow history and assured energy levels to small hydroelectric power plantsEWMAAssured energySmall hydroelectric power plantsFlow historyABSTRACT Small hydroelectric power plants make up 6 GW of installed capacity in Brazil. However, electricity generation at the plants has been below their expected Assured Energy Levels (AELs) recently. This paper analyzes the flow history of 24 plants using exponential moving average control charts in an attempt to verify whether climate change or land use and occupation could have changed the average annual flow available in the basin over time. The graphs showed neither a decreasing or increasing trend in average flows, but rather showed a recurring number of out-of-control points, which proves the sensitivity of assured energy to hydrological variations and the need to evaluate the use of daily average flow rates for calculating and analyzing the energy generated by small power plants.Associação Brasileira de Recursos Hídricos2020-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312020000100239RBRH v.25 2020reponame:RBRH (Online)instname:Associação Brasileira de Recursos Hídricos (ABRH)instacron:ABRH10.1590/2318-0331.252020190159info:eu-repo/semantics/openAccessVasconcellos,Bruna Tayla Cabral deTiago Filho,Geraldo LúcioBonatto,Benedito DonizetiSouza Junior,Oswaldo Honorato deeng2020-10-20T00:00:00Zoai:scielo:S2318-03312020000100239Revistahttps://www.scielo.br/j/rbrh/https://old.scielo.br/oai/scielo-oai.php||rbrh@abrh.org.br2318-03311414-381Xopendoar:2020-10-20T00:00RBRH (Online) - Associação Brasileira de Recursos Hídricos (ABRH)false |
dc.title.none.fl_str_mv |
Applying an Exponentially Weighted Moving Average control chart using flow history and assured energy levels to small hydroelectric power plants |
title |
Applying an Exponentially Weighted Moving Average control chart using flow history and assured energy levels to small hydroelectric power plants |
spellingShingle |
Applying an Exponentially Weighted Moving Average control chart using flow history and assured energy levels to small hydroelectric power plants Vasconcellos,Bruna Tayla Cabral de EWMA Assured energy Small hydroelectric power plants Flow history |
title_short |
Applying an Exponentially Weighted Moving Average control chart using flow history and assured energy levels to small hydroelectric power plants |
title_full |
Applying an Exponentially Weighted Moving Average control chart using flow history and assured energy levels to small hydroelectric power plants |
title_fullStr |
Applying an Exponentially Weighted Moving Average control chart using flow history and assured energy levels to small hydroelectric power plants |
title_full_unstemmed |
Applying an Exponentially Weighted Moving Average control chart using flow history and assured energy levels to small hydroelectric power plants |
title_sort |
Applying an Exponentially Weighted Moving Average control chart using flow history and assured energy levels to small hydroelectric power plants |
author |
Vasconcellos,Bruna Tayla Cabral de |
author_facet |
Vasconcellos,Bruna Tayla Cabral de Tiago Filho,Geraldo Lúcio Bonatto,Benedito Donizeti Souza Junior,Oswaldo Honorato de |
author_role |
author |
author2 |
Tiago Filho,Geraldo Lúcio Bonatto,Benedito Donizeti Souza Junior,Oswaldo Honorato de |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Vasconcellos,Bruna Tayla Cabral de Tiago Filho,Geraldo Lúcio Bonatto,Benedito Donizeti Souza Junior,Oswaldo Honorato de |
dc.subject.por.fl_str_mv |
EWMA Assured energy Small hydroelectric power plants Flow history |
topic |
EWMA Assured energy Small hydroelectric power plants Flow history |
description |
ABSTRACT Small hydroelectric power plants make up 6 GW of installed capacity in Brazil. However, electricity generation at the plants has been below their expected Assured Energy Levels (AELs) recently. This paper analyzes the flow history of 24 plants using exponential moving average control charts in an attempt to verify whether climate change or land use and occupation could have changed the average annual flow available in the basin over time. The graphs showed neither a decreasing or increasing trend in average flows, but rather showed a recurring number of out-of-control points, which proves the sensitivity of assured energy to hydrological variations and the need to evaluate the use of daily average flow rates for calculating and analyzing the energy generated by small power plants. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312020000100239 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S2318-03312020000100239 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/2318-0331.252020190159 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Recursos Hídricos |
publisher.none.fl_str_mv |
Associação Brasileira de Recursos Hídricos |
dc.source.none.fl_str_mv |
RBRH v.25 2020 reponame:RBRH (Online) instname:Associação Brasileira de Recursos Hídricos (ABRH) instacron:ABRH |
instname_str |
Associação Brasileira de Recursos Hídricos (ABRH) |
instacron_str |
ABRH |
institution |
ABRH |
reponame_str |
RBRH (Online) |
collection |
RBRH (Online) |
repository.name.fl_str_mv |
RBRH (Online) - Associação Brasileira de Recursos Hídricos (ABRH) |
repository.mail.fl_str_mv |
||rbrh@abrh.org.br |
_version_ |
1754734701998768128 |