uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Online Model-Based Thermal Prediction for Flexible Control of an Air-Cooled Hydrogenerator
University of South-Eastern Norway.
University of South-Eastern Norway.
University of South-Eastern Norway.
2018 (English)In: IEEE transactions on industrial electronics (1982. Print), ISSN 0278-0046, E-ISSN 1557-9948, Vol. 99, no PP, p. 1-10Article in journal (Refereed) Published
Abstract [en]

The flexible generation of electrical energy is heavily dependent on hydropower. Advanced control systems may offer an enhanced operational security. During power system disturbances, a generator may need to operate beyond its limits to maintain a stable operation. This increased performance can be obtained if the total thermal capacity of the generator is exploited by applying optimal control theory in the automatic voltage regulator (AVR). A low order model is required for online implementation and prediction of critical thermal stresses in the machine. Periodic extension of the generator capability diagram has been historically overlooked. In this contribution, a thermal network for air-cooled hydrogenerators for use in real-time monitoring and optimal control is proposed and validated. The thermal model is extended with a heat exchanger model. The dynamic model is developed from an energy balance of the system and verified through FEM simulations and temperature measurements in a case study. Transient simulation results of the online low order model are in good agreement with measurements. Finally, a satisfactory simulator speed is obtained which confirms the feasibility of this approach in real-world applications.

Place, publisher, year, edition, pages
2018. Vol. 99, no PP, p. 1-10
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Engineering Science
Identifiers
URN: urn:nbn:se:uu:diva-363686DOI: 10.1109/TIE.2018.2875637OAI: oai:DiVA.org:uu-363686DiVA, id: diva2:1257249
Available from: 2018-10-19 Created: 2018-10-19 Last updated: 2018-10-19

Open Access in DiVA

No full text in DiVA

Other links

Publisher's full texthttps://ieeexplore.ieee.org/document/8495032

Search in DiVA

By author/editor
Nöland, Jonas Kristiansen
In the same journal
IEEE transactions on industrial electronics (1982. Print)
Other Electrical Engineering, Electronic Engineering, Information Engineering

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 103 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf