Full Text Available
Note: Clicking the button above will open the full text document at the original institutional repository in a new window.
Optimal sizing and operation of pumping systems to achieve energy efficiency and load shifting
Dissertation (MEng)--University of Pretoria, 2011.
Saved in:
| Other Authors: | |
|---|---|
| Format: | Thesis |
| Published: |
University of Pretoria
2013
|
| Subjects: | |
| Tags: |
No Tags, Be the first to tag this record!
|
| _version_ | 1867613523046039552 |
|---|---|
| access_status_str | Open Access |
| author2 | Xia, Xiaohua |
| author_browse | Xia, Xiaohua |
| author_facet | Xia, Xiaohua |
| collection | Thesis |
| dc_rights_str_mv | © 2011, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. |
| description | Dissertation (MEng)--University of Pretoria, 2011. |
| format | Thesis |
| id | oai:repository.up.ac.za:2263/28132 |
| institution | University of Pretoria (South Africa) |
| last_indexed | 2026-06-10T12:37:29.889Z |
| license_str | Other — see source repository |
| provenance_str_mv | Harvested via OAI-PMH from UPSpace — University of Pretoria Institutional Repository |
| publishDate | 2013 |
| publishDateRange | 2013 |
| publishDateSort | 2013 |
| publisher | University of Pretoria |
| publisherStr | University of Pretoria |
| record_format | dspace |
| source_str | UPSpace — University of Pretoria Institutional Repository |
| spelling | oai:repository.up.ac.za:2263/28132 Optimal sizing and operation of pumping systems to achieve energy efficiency and load shifting Xia, Xiaohua hzhang@tuks.co.za Zhang, Jiangfeng Zhang, He Pump Load shifting Energy efficiency Poet Operational cost Optimal capacity selection Mpc Optimal control Variable speed drive Lasverskuiwing Energiedoeltreffendheid Pomp Mixed integer pso Gemengde heelgetal pso Optimale kapasiteit Veranderlike spoed motor Optimale beheer Bedryfskoste UCTD Dissertation (MEng)--University of Pretoria, 2011. This dissertation presents a pumping system operation efficiency improvement solution that includes optimal selection and control of the water pump. This solution is formulated based on the performance, operation, equipment and technology (POET) framework. The focus is on the minimization of the operational energy cost. This efficiency improvement solution is divided into three stages in accordance with the operation category of the POET framework. The first stage is to select the optimal pump capacity by considering both energy efficiency and load shifting requirements. The second stage is to develop a flexible pump controlling strategy that combines and balances the contributions from energy efficiency and load shifting. The last stage is to improve the robustness of the control system using the closed-loop model predictive control approach. An optimal pump capacity selection model is formulated. In this model, additional capacity requirements for load shifting are considered along with the traditional energy efficiency requirements. By balancing the contributions from load shifting and energy efficiency, the operational energy cost can be reduced by up to 37%. An optimal pump control is formulated. The objective of this control model is to balance the energy efficiency and load shifting contributions during the operation and minimize the operational energy cost. This control model is tested under different operational conditions and it is compared to other existing control strategies. The simulation and comparison results show that the proposed control strategy achieves the lowest operational energy cost in comparison to other strategies. This optimal pump control model is further modified into the closed-loop model predictive control format to increase the robustness of the control system under operation uncertainties. A mixed integer particle swarm optimization algorithms is employed to solve the optimization problems in this research. AFRIKAANS : Hierdie verhandeling bied ’n verbeterde oplossing vir die operasionele doeltreffendheid van pompstelsels wat die optimale keuse en beheer van die waterpomp insluit. Hierdie oplossing is geformuleer op ’n raamwerk wat werkverrigting, bedryf, toerusting en tegnologie in ag neem. Die oplossing fokus op die vermindering van bedryfsenergie koste. Hierdie oplossing is onderverdeel in drie fases soos bepaal deur die bedryfskategorie gegrond op die bogenoemde raamwerk: Die eerste fase is die keuse van die optimale pompkapasiteit deur beide energiedoeltreffendheid en lasverskuiwing in ag te neem. Die tweede fase is om ’n buigbare pompbeheer strategie te ontwikkel wat ’n goeie balans handhaaf tussen die onderskeie bydraes van energiedoeltreffendheid en lasverskuiwing. Die derde fase is om die stabiliteit van die beheerstelsel te verbeter deur gebruik te maak van ’n geslote-lus beheermodel met voorspellende beheer (Predictive Control). ’n Model vir die keuse van optimale pompkapasiteit is geformuleer. In hierdie model word vereistes vir addisionele pompkapasiteit vir lasverskuiwing sowel as vereistes in terme tradisionele energiedoeltreffendheid in ag geneem. Deur die regte verhouding tussen die onderskeie bydraes van energiedoeltreffendheid en lasverskuiwing te vind kan ’n besparing van tot 37% op die energiekoste verkry word. Optimale pompbeheer is geformuleer. Die doel van die beheermodel is om die bydraes van energiedoeltreffendheid en lasverskuiwing te balanseer en om die bedryfsenergie koste te minimiseer. Hierdie beheermodel is getoets onder verskillende bedryfstoestande en dit is vergelyk met ander bestaande beheerstrategiee. Die simulasie en vergelyking van resultate toon dat die voorgestelde beheerstrategie die laagste bedryfsenergie koste behaal in vergelyking met ander strategiee. Hierdie optimale pomp beheermodel is verder aangepas in ’n geslote beheermodel met voorspellende beheerformaat om die stabiliteit van die beheerstelsel te verbeter onder onsekere bedryfstoestande. ’n Gemende heelgetal partikel swerm optimisasie (Mixed interger particle swarm optimization) algoritme is gebruik om die optimiseringsprobleme op te los tydens hierdie navorsingsoefening. Electrical, Electronic and Computer Engineering Unrestricted 2013-09-07T12:55:51Z 2011-10-21 2013-09-07T12:55:51Z 2011-09-06 2011-10-21 2011-09-22 Dissertation Zhang, H 2011, Optimal sizing and operation of pumping systems to achieve energy efficiency and load shifting, MEng dissertation, University of Pretoria, Pretoria, viewed yymmdd < http://hdl.handle.net/2263/28132 > E11/9/115/gm http://hdl.handle.net/2263/28132 http://upetd.up.ac.za/thesis/available/etd-09222011-110333/ © 2011, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria. application/pdf University of Pretoria |
| spellingShingle | Pump Load shifting Energy efficiency Poet Operational cost Optimal capacity selection Mpc Optimal control Variable speed drive Lasverskuiwing Energiedoeltreffendheid Pomp Mixed integer pso Gemengde heelgetal pso Optimale kapasiteit Veranderlike spoed motor Optimale beheer Bedryfskoste UCTD Optimal sizing and operation of pumping systems to achieve energy efficiency and load shifting |
| title | Optimal sizing and operation of pumping systems to achieve energy efficiency and load shifting |
| title_full | Optimal sizing and operation of pumping systems to achieve energy efficiency and load shifting |
| title_fullStr | Optimal sizing and operation of pumping systems to achieve energy efficiency and load shifting |
| title_full_unstemmed | Optimal sizing and operation of pumping systems to achieve energy efficiency and load shifting |
| title_short | Optimal sizing and operation of pumping systems to achieve energy efficiency and load shifting |
| title_sort | optimal sizing and operation of pumping systems to achieve energy efficiency and load shifting |
| topic | Pump Load shifting Energy efficiency Poet Operational cost Optimal capacity selection Mpc Optimal control Variable speed drive Lasverskuiwing Energiedoeltreffendheid Pomp Mixed integer pso Gemengde heelgetal pso Optimale kapasiteit Veranderlike spoed motor Optimale beheer Bedryfskoste UCTD |
| url | http://hdl.handle.net/2263/28132 http://upetd.up.ac.za/thesis/available/etd-09222011-110333/ |