Water Delivery Quality and Automatic Control Modes in Irrigation Canals. A Case Study.
Autor(a) principal: | |
---|---|
Data de Publicação: | 2004 |
Outros Autores: | |
Tipo de documento: | Artigo de conferência |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10174/19277 |
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 an 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 effectives 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 worse for the gate controlled orifices, followed by the weir with adjustable height. |
id |
RCAP_b99a78ddf427199901a6957efdba9fb3 |
---|---|
oai_identifier_str |
oai:dspace.uevora.pt:10174/19277 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Water Delivery Quality and Automatic Control Modes in Irrigation Canals. A Case Study.Irrigation canalPI controllerlocal downstream controldistant downstream controlirrigation offtakeswater savingsperformance 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 an 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 effectives 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 worse for the gate controlled orifices, followed by the weir with adjustable height.2016-12-14T12:19:56Z2016-12-142004-10-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjecthttp://hdl.handle.net/10174/19277http://hdl.handle.net/10174/19277engBeijing, China152004 CIGR International Conferencesimnaonaorijo@uevora.ptnd468Rijo, 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:RCAAP2024-01-03T19:06:12Zoai:dspace.uevora.pt:10174/19277Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:10:10.023113Repositório 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 |
Water Delivery Quality and Automatic Control Modes in Irrigation Canals. A Case Study. |
title |
Water Delivery Quality and Automatic Control Modes in Irrigation Canals. A Case Study. |
spellingShingle |
Water Delivery Quality and Automatic Control Modes in Irrigation Canals. A Case Study. Rijo, Manuel Irrigation canal PI controller local downstream control distant downstream control irrigation offtakes water savings performance indicators |
title_short |
Water Delivery Quality and Automatic Control Modes in Irrigation Canals. A Case Study. |
title_full |
Water Delivery Quality and Automatic Control Modes in Irrigation Canals. A Case Study. |
title_fullStr |
Water Delivery Quality and Automatic Control Modes in Irrigation Canals. A Case Study. |
title_full_unstemmed |
Water Delivery Quality and Automatic Control Modes in Irrigation Canals. A Case Study. |
title_sort |
Water Delivery Quality and Automatic Control Modes in Irrigation Canals. A Case Study. |
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 local downstream control distant downstream control irrigation offtakes water savings performance indicators |
topic |
Irrigation canal PI controller local downstream control distant downstream control irrigation offtakes water savings 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 an 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 effectives 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 worse for the gate controlled orifices, followed by the weir with adjustable height. |
publishDate |
2004 |
dc.date.none.fl_str_mv |
2004-10-01T00:00:00Z 2016-12-14T12:19:56Z 2016-12-14 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/conferenceObject |
format |
conferenceObject |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10174/19277 http://hdl.handle.net/10174/19277 |
url |
http://hdl.handle.net/10174/19277 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Beijing, China 15 2004 CIGR International Conference sim nao nao rijo@uevora.pt nd 468 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
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 |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
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 |
|
_version_ |
1799136583585103872 |