Optimal pump operations considering pump switches

Kevin E Lansey, Kofi Awumah

Research output: Contribution to journalArticle

128 Citations (Scopus)

Abstract

A methodology for determining optimal pump operation schedules for water-distribution systems is presented. In addition to minimizing the energy-consumption cost, the model includes a constraint to limit the number of pumps that are switched on during the planning period. A two-level approach is adopted whereby the system hydraulics are analyzed in an off-line mode to generate simplified hydraulic and cost functions for an on-line model. These functions developed for each pump combination allow for rapid evaluation within a dynamic programming optimization algorithm. Constraints can also be included for tank levels, rate of change of tank level, pump switches during each period, and maximum energy consumption. Solution times for small to medium-sized systems show that the model can be used in an on-line mode to determine pump operation schedules; however, the applicability of the model is limited by the number of pumps in the system. An extensive sensitivity that highlights operational problems and the utility of the approach is presented.

Original languageEnglish (US)
Pages (from-to)17-35
Number of pages19
JournalJournal of Water Resources Planning and Management
Volume120
Issue number1
DOIs
StatePublished - 1994

Fingerprint

pump
Switches
Pumps
energy consumption
distribution system
Energy utilization
costs
Hydraulics
hydraulics
Water distribution systems
programming
Dynamic programming
cost
Cost functions
water
planning
methodology
evaluation
Planning
Costs

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Management, Monitoring, Policy and Law
  • Water Science and Technology
  • Geography, Planning and Development
  • Engineering(all)

Cite this

Optimal pump operations considering pump switches. / Lansey, Kevin E; Awumah, Kofi.

In: Journal of Water Resources Planning and Management, Vol. 120, No. 1, 1994, p. 17-35.

Research output: Contribution to journalArticle

@article{7affd2ce7d584097b18e3a487f5e2db5,
title = "Optimal pump operations considering pump switches",
abstract = "A methodology for determining optimal pump operation schedules for water-distribution systems is presented. In addition to minimizing the energy-consumption cost, the model includes a constraint to limit the number of pumps that are switched on during the planning period. A two-level approach is adopted whereby the system hydraulics are analyzed in an off-line mode to generate simplified hydraulic and cost functions for an on-line model. These functions developed for each pump combination allow for rapid evaluation within a dynamic programming optimization algorithm. Constraints can also be included for tank levels, rate of change of tank level, pump switches during each period, and maximum energy consumption. Solution times for small to medium-sized systems show that the model can be used in an on-line mode to determine pump operation schedules; however, the applicability of the model is limited by the number of pumps in the system. An extensive sensitivity that highlights operational problems and the utility of the approach is presented.",
author = "Lansey, {Kevin E} and Kofi Awumah",
year = "1994",
doi = "10.1061/(ASCE)0733-9496(1994)120:1(17)",
language = "English (US)",
volume = "120",
pages = "17--35",
journal = "Journal of Water Resources Planning and Management - ASCE",
issn = "0733-9496",
publisher = "American Society of Civil Engineers (ASCE)",
number = "1",

}

TY - JOUR

T1 - Optimal pump operations considering pump switches

AU - Lansey, Kevin E

AU - Awumah, Kofi

PY - 1994

Y1 - 1994

N2 - A methodology for determining optimal pump operation schedules for water-distribution systems is presented. In addition to minimizing the energy-consumption cost, the model includes a constraint to limit the number of pumps that are switched on during the planning period. A two-level approach is adopted whereby the system hydraulics are analyzed in an off-line mode to generate simplified hydraulic and cost functions for an on-line model. These functions developed for each pump combination allow for rapid evaluation within a dynamic programming optimization algorithm. Constraints can also be included for tank levels, rate of change of tank level, pump switches during each period, and maximum energy consumption. Solution times for small to medium-sized systems show that the model can be used in an on-line mode to determine pump operation schedules; however, the applicability of the model is limited by the number of pumps in the system. An extensive sensitivity that highlights operational problems and the utility of the approach is presented.

AB - A methodology for determining optimal pump operation schedules for water-distribution systems is presented. In addition to minimizing the energy-consumption cost, the model includes a constraint to limit the number of pumps that are switched on during the planning period. A two-level approach is adopted whereby the system hydraulics are analyzed in an off-line mode to generate simplified hydraulic and cost functions for an on-line model. These functions developed for each pump combination allow for rapid evaluation within a dynamic programming optimization algorithm. Constraints can also be included for tank levels, rate of change of tank level, pump switches during each period, and maximum energy consumption. Solution times for small to medium-sized systems show that the model can be used in an on-line mode to determine pump operation schedules; however, the applicability of the model is limited by the number of pumps in the system. An extensive sensitivity that highlights operational problems and the utility of the approach is presented.

UR - http://www.scopus.com/inward/record.url?scp=0028173762&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0028173762&partnerID=8YFLogxK

U2 - 10.1061/(ASCE)0733-9496(1994)120:1(17)

DO - 10.1061/(ASCE)0733-9496(1994)120:1(17)

M3 - Article

VL - 120

SP - 17

EP - 35

JO - Journal of Water Resources Planning and Management - ASCE

JF - Journal of Water Resources Planning and Management - ASCE

SN - 0733-9496

IS - 1

ER -