Hydraulic Performance of a Downstream Controlled Irrigation Canal equipped with Difeerent Offtake Types
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/5192 |
Resumo: | Regarding canal management modernization, water savings and water delivery quality, the study presents two automatic canal control approaches of the PI (Proportional and Integral) type: the distant and the local downstream control modes. The two PI controllers are defined, tuned and tested using a hydraulic unsteady flow simulation model, particularly suitable for canal control studies. The PI control parameters are tuned using optimization tools. The simulations are done for a Portuguese prototype canal and the PI controllers are analyzed and compared considering a demand-oriented-canal operation. The paper presents and analyzes the two control modes answers for five different offtake types – gate controlled weir, gate controlled orifice, weir with or without adjustable height and automatic flow adjustable offtake. The simulation results are compared using water volumes performance indicators (considering the demanded, supplied and the effective water volumes) and a time indicator, defined taking into account the time during which the demand discharges are effective discharges. Regarding water savings, the simulation results for the five offtake types prove that the local downstream control gives the best results (no water operational losses) and that the distant downstream control presents worse results in connection with the automatic flow adjustable offtakes. Considering the water volumes and time performance indicators, the best results are obtained for the automatic flow adjustable offtakes and the worst for the gate controlled orifices, followed by the weir with adjustable height. |
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Hydraulic Performance of a Downstream Controlled Irrigation Canal equipped with Difeerent Offtake Typesirrigation canalPI controllerdownstream controlirrigation offtakewater savingperformance indicatorsRegarding canal management modernization, water savings and water delivery quality, the study presents two automatic canal control approaches of the PI (Proportional and Integral) type: the distant and the local downstream control modes. The two PI controllers are defined, tuned and tested using a hydraulic unsteady flow simulation model, particularly suitable for canal control studies. The PI control parameters are tuned using optimization tools. The simulations are done for a Portuguese prototype canal and the PI controllers are analyzed and compared considering a demand-oriented-canal operation. The paper presents and analyzes the two control modes answers for five different offtake types – gate controlled weir, gate controlled orifice, weir with or without adjustable height and automatic flow adjustable offtake. The simulation results are compared using water volumes performance indicators (considering the demanded, supplied and the effective water volumes) and a time indicator, defined taking into account the time during which the demand discharges are effective discharges. Regarding water savings, the simulation results for the five offtake types prove that the local downstream control gives the best results (no water operational losses) and that the distant downstream control presents worse results in connection with the automatic flow adjustable offtakes. Considering the water volumes and time performance indicators, the best results are obtained for the automatic flow adjustable offtakes and the worst for the gate controlled orifices, followed by the weir with adjustable height.CIGR-International Commission of Agricultural and Biosystems engineering2012-07-13T15:12:09Z2012-07-132005-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10174/5192http://hdl.handle.net/10174/5192engManuscript LW 040141682-1130http://www.cigrjournal.org/index.php/Ejournal/issue/view/267Agricultural Engineering International CIGR Ejournalrijo@uevora.ptnd469Rijo, ManuelArranja, Carinainfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-03T18:43:23Zoai:dspace.uevora.pt:10174/5192Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:00:06.802742Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Hydraulic Performance of a Downstream Controlled Irrigation Canal equipped with Difeerent Offtake Types |
title |
Hydraulic Performance of a Downstream Controlled Irrigation Canal equipped with Difeerent Offtake Types |
spellingShingle |
Hydraulic Performance of a Downstream Controlled Irrigation Canal equipped with Difeerent Offtake Types Rijo, Manuel irrigation canal PI controller downstream control irrigation offtake water saving performance indicators |
title_short |
Hydraulic Performance of a Downstream Controlled Irrigation Canal equipped with Difeerent Offtake Types |
title_full |
Hydraulic Performance of a Downstream Controlled Irrigation Canal equipped with Difeerent Offtake Types |
title_fullStr |
Hydraulic Performance of a Downstream Controlled Irrigation Canal equipped with Difeerent Offtake Types |
title_full_unstemmed |
Hydraulic Performance of a Downstream Controlled Irrigation Canal equipped with Difeerent Offtake Types |
title_sort |
Hydraulic Performance of a Downstream Controlled Irrigation Canal equipped with Difeerent Offtake Types |
author |
Rijo, Manuel |
author_facet |
Rijo, Manuel Arranja, Carina |
author_role |
author |
author2 |
Arranja, Carina |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Rijo, Manuel Arranja, Carina |
dc.subject.por.fl_str_mv |
irrigation canal PI controller downstream control irrigation offtake water saving performance indicators |
topic |
irrigation canal PI controller downstream control irrigation offtake water saving performance indicators |
description |
Regarding canal management modernization, water savings and water delivery quality, the study presents two automatic canal control approaches of the PI (Proportional and Integral) type: the distant and the local downstream control modes. The two PI controllers are defined, tuned and tested using a hydraulic unsteady flow simulation model, particularly suitable for canal control studies. The PI control parameters are tuned using optimization tools. The simulations are done for a Portuguese prototype canal and the PI controllers are analyzed and compared considering a demand-oriented-canal operation. The paper presents and analyzes the two control modes answers for five different offtake types – gate controlled weir, gate controlled orifice, weir with or without adjustable height and automatic flow adjustable offtake. The simulation results are compared using water volumes performance indicators (considering the demanded, supplied and the effective water volumes) and a time indicator, defined taking into account the time during which the demand discharges are effective discharges. Regarding water savings, the simulation results for the five offtake types prove that the local downstream control gives the best results (no water operational losses) and that the distant downstream control presents worse results in connection with the automatic flow adjustable offtakes. Considering the water volumes and time performance indicators, the best results are obtained for the automatic flow adjustable offtakes and the worst for the gate controlled orifices, followed by the weir with adjustable height. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-01-01T00:00:00Z 2012-07-13T15:12:09Z 2012-07-13 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/5192 http://hdl.handle.net/10174/5192 |
url |
http://hdl.handle.net/10174/5192 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Manuscript LW 04014 1682-1130 http://www.cigrjournal.org/index.php/Ejournal/issue/view/26 7 Agricultural Engineering International CIGR Ejournal rijo@uevora.pt nd 469 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.publisher.none.fl_str_mv |
CIGR-International Commission of Agricultural and Biosystems engineering |
publisher.none.fl_str_mv |
CIGR-International Commission of Agricultural and Biosystems engineering |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799136483824631808 |