Control systems for small hydropower plants: a review

Control systems for small hydropower plants: a review

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Article ID: iaor200913579
Country: United Kingdom
Volume: 5
Issue: 1
Start Page Number: 97
End Page Number: 105
Publication Date: Feb 2007
Journal: International Journal of Energy Technology and Policy
Authors: , ,
Keywords: control processes, water
Abstract:

Hydropower is emerging as a major contributor to world energy requirement. It is inexhaustible, clean and has many other benefits like flood mitigation, water supply, irrigation, etc. However, large‐scale hydropower generation suffers from inherent disadvantages, such as massive financial outlays, long gestation periods, geological surprises, environmental factors and rehabilitation of the displaced population. Small power hydrostations, being devoid of these problems have become a viable alternative. Control systems and governors are key components of small hydropower stations as they have to supply stable power while accommodating varying load conditions and erratic water flows. They may also be required to operate in a “stand‐alone” mode i.e., not connected to any grid. This paper examines the role, functioning and design of control systems for small hydropower stations. The characteristics of control systems and traditional and modern designs of governors are discussed. Recent technological advances in the field of governors and control systems are discussed subsequently.

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