Small hydropower plants with variable speed operation—an optimal operation curve determination
Authors:
- Dariusz Borkowski,
- Marek Majdak
Abstract
In recent times, much attention has been paid to small hydropower plants (SHPs) withvariable speed operation and different control techniques. Control complexity in SHPs is mainly causedby specific steady-state features of the water turbine, the long time constants of the hydraulic systemand significant seasonal and/or aging-related deterioration in the system performance. This paperpresents the most important features of the turbine model from a control point of view. It classifiescontrol techniques for SHPs with variable speed operation in terms of the turbine type and SHPfunction (run-of-the-river and reservoir). Furthermore, various control methods are analysed takinginto account the complexity of the method, dynamics, adaptability and applicability. The noveltyof this study is the proposal of a simple, universal analytical formula, which, based on the basicdimensions of the turbine, determines the optimal operating curve. The proposed formula is verifiedon a real SHP 150 kW by comparison with measurements in the form of operational characteristics.The analysis of the annual energy production confirms the effectiveness of the approximation precision,yielding only 1% production losses, and shows an advantage of variable speed over constant speed inannual energy production of 16%.
- Record ID
- CUTd635951a91f5465a90568898e55fbfa6
- Publication categories
- ;
- Author
- Journal series
- Energies, ISSN , e-ISSN 1996-1073, Biweekly
- Issue year
- 2020
- Vol
- 13
- No
- 23
- Pages
- [1-20]
- Article number
- 6230
- Other elements of collation
- fot.; rys.; schem.; tab.; wykr.; Bibliografia (na s.) - 17-20; Bibliografia (liczba pozycji) - 53; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Vol. 13, Iss. 23
- Substantive notes
- Section: Electrical Power and Energy System
- Keywords in English
- AC-AC converters, control design, hydroelectric power generation, power generationcontrol, hydraulic systems, variable speed drives
- DOI
- DOI:10.3390/en13236230 Opening in a new tab
- URL
- https://www.mdpi.com/1996-1073/13/23/6230 Opening in a new tab
- Related project
- Modele i algorytmy dla potrzeby sterowania i diagnostyki układów przetwarzania energii. . Project leader at PK: , ,
Działalność statutowa - Language
- eng (en) English
- License
- Score (nominal)
- 140
- Additional fields
- Indeksowana w: Web of Science, Scopus
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTd635951a91f5465a90568898e55fbfa6/
- URN
urn:pkr-prod:CUTd635951a91f5465a90568898e55fbfa6
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.