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A computed river flow-based turbine controller on a programmable logic controller for run-off river hydroelectric systems

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dc.citedby2
dc.contributor.authorJidin R.en_US
dc.contributor.authorOthman A.B.en_US
dc.contributor.authorid6508169028en_US
dc.contributor.authorid49561714800en_US
dc.date.accessioned2023-05-29T06:37:37Z
dc.date.available2023-05-29T06:37:37Z
dc.date.issued2017
dc.descriptionComputer circuits; Hydroelectric power; Ladders; Lakes; Mass transfer; Potential energy; Programmable logic controllers; Programmed control systems; Rivers; Stream flow; Turbines; Water levels; Hydroelectric; Hydropower; Ladder logic; Renewable energies; River flow; Turbine controllers; Controllersen_US
dc.description.abstractThe main feature of a run-off river hydroelectric system is a small size intake pond that overspills when river flow is more than turbines' intake. As river flow fluctuates, a large proportion of the potential energy is wasted due to the spillages which can occur when turbines are operated manually. Manual operation is often adopted due to unreliability of water level-based controllers at many remote and unmanned run-off river hydropower plants. In order to overcome these issues, this paper proposes a novel method by developing a controller that derives turbine output set points from computed mass flow rate of rivers that feed the hydroelectric system. The computed flow is derived by summation of pond volume difference with numerical integration of both turbine discharge flows and spillages. This approach of estimating river flow allows the use of existing sensors rather than requiring the installation of new ones. All computations, including the numerical integration, have been realized as ladder logics on a programmable logic controller. The implemented controller manages the dynamic changes in the flow rate of the river better than the old point-level based controller, with the aid of a newly installed water level sensor. The computed mass flow rate of the river also allows the controller to straightforwardly determine the number of turbines to be in service with considerations of turbine efficiencies and auxiliary power conservation. � 2017 by the authors.en_US
dc.description.natureFinalen_US
dc.identifier.ArtNo1717
dc.identifier.doi10.3390/en10111717
dc.identifier.issue11
dc.identifier.scopus2-s2.0-85035126054
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85035126054&doi=10.3390%2fen10111717&partnerID=40&md5=631e06c6e9212d5adeaacd2d7a101fee
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/23059
dc.identifier.volume10
dc.publisherMDPIen_US
dc.relation.ispartofAll Open Access, Gold, Green
dc.sourceScopus
dc.sourcetitleEnergies
dc.titleA computed river flow-based turbine controller on a programmable logic controller for run-off river hydroelectric systemsen_US
dc.typeNoteen_US
dspace.entity.typePublication
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