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Experimental investigation and modelling of the interaction between an AVR and ballast load frequency controller in a stand-alone micro-hydroelectric system

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  • Jarman, R.
  • Bryce, P.

Abstract

Extensive field experience in micro-hydroelectric systems in remote rural communities demonstrates that the use of a typical automatic voltage regulator (AVR), as supplied with a brushless self-exciting synchronous alternator, can be the cause of unsatisfactory system performance. This paper presents results from experiments undertaken on a full-scale micro-hydroelectric test rig as well as system modelling with PSCAD. The source of the instability is considered to stem from the similar time constants of the ballast load frequency controller and the AVR as two competing feedback control systems. System modelling is used to verify steady state operating points, and confirms that the under-frequency roll-off characteristic of the AVR also contributes to unsatisfactory performance.

Suggested Citation

  • Jarman, R. & Bryce, P., 2007. "Experimental investigation and modelling of the interaction between an AVR and ballast load frequency controller in a stand-alone micro-hydroelectric system," Renewable Energy, Elsevier, vol. 32(9), pages 1525-1543.
    • Handle: RePEc:eee:renene:v:32:y:2007:i:9:p:1525-1543
    DOI: 10.1016/j.renene.2006.06.011
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    References listed on IDEAS

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    1. Waddell, R. & Bryce, P., 1999. "Micro-hydro systems for small communities," Renewable Energy, Elsevier, vol. 16(1), pages 1257-1261.
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    Cited by:

    1. Şerban, I. & Marinescu, C., 2011. "Aggregate load-frequency control of a wind-hydro autonomous microgrid," Renewable Energy, Elsevier, vol. 36(12), pages 3345-3354.

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