Pondage: Difference between revisions

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[[File:Chief_Joseph_Dam.jpg|360px|thumb|right|Figure 1. Pondage is the small amount of water storage present in some run-of-the-river systems, such as the Chief Joseph dam above.<ref>Wikimedia Commons. (December 29, 2015). ''Chief Joseph Dam'' [Online]. Available: https://upload.wikimedia.org/wikipedia/commons/6/6c/Chief_Joseph_Dam.jpg</ref>]]
[[File:Chief_Joseph_Dam.jpg|360px|thumb|right|Figure 1. Pondage is the small amount of water storage present in some run-of-the-river systems, such as the Chief Joseph dam above.<ref>Wikimedia Commons. (December 29, 2015). ''Chief Joseph Dam'' [Online]. Available: https://upload.wikimedia.org/wikipedia/commons/6/6c/Chief_Joseph_Dam.jpg</ref>]]
<onlyinclude>'''Pondage''' is the water that can back-up behind larger [[run-of-the-river systems]]. This pondage is essentially a small amount of [[water storage]] wherein [[water]] is built up during off-peak periods and used during peak periods.</onlyinclude> In periods of low electricity demand, or when the plant is inactive the water that would otherwise fall through the [[spillway]]s and be "wasted" is stored and used when it is needed. Water that is built up in this pondage can result in the elevation of the water varying between 1-1.5 [[meter]]s during operation.<ref>Foundation for Water and Energy Education. (December 29, 2015). ''Types of Hydroelectric Projects'' [Online]. Available: http://fwee.org/nw-hydro-tours/how-the-northwest-hydro-system-works/types-of-hydroelectric-projects/</ref> A significant amount of pondage allows the plant to accomodate hourly fluctuations.  
<onlyinclude>'''Pondage''' is the term for water that can build up behind larger [[run-of-the-river systems]]. This is a small amount of [[water storage]] where [[water]] accumulates during low-demand periods and is used during peak periods when demand is highest.</onlyinclude> In periods of low electricity demand, or when the plant is inactive the water that would otherwise fall through the [[spillway]]s and be "wasted" is stored and used when it is needed. Water that is built up in this pondage can result in the elevation of the water varying between 1-1.5 [[meter]]s during operation.<ref>Foundation for Water and Energy Education. (December 29, 2015). ''Types of Hydroelectric Projects'' [Online]. Available: http://fwee.org/nw-hydro-tours/how-the-northwest-hydro-system-works/types-of-hydroelectric-projects/</ref> A significant amount of pondage allows the plant to accommodate hourly fluctuations in energy demand.


Generally speaking, since small amounts of water storage in the form of pondage allow run-of-the-river systems to run fully even during off-peak periods, plants with pondage tend to be more efficient than those without.<ref>Electrical Engineering Tutorials. (December 29, 2015). ''Hydroelectric Plants'' [Online]. Available: http://www.powerelectricalblog.com/2007/04/hydro-electric-plants-classification.html</ref>
Since small amounts of water storage in the form of pondage allow run-of-the-river systems to run fully even during off-peak periods, plants with pondage tend to be more efficient than those without.<ref>Electrical Engineering Tutorials. (December 29, 2015). ''Hydroelectric Plants'' [Online]. Available: http://www.powerelectricalblog.com/2007/04/hydro-electric-plants-classification.html</ref>
 
==For Further Reading==
*[[Penstock]]
*[[Hydroelectric facility]]
*[[Hydroelectric dam]]
*[[Hydroelectricity]]
*Or explore a [[Special:Random|random page]]


==References==
==References==
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[[Category:Ed edit]]
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Revision as of 23:30, 26 May 2021

Figure 1. Pondage is the small amount of water storage present in some run-of-the-river systems, such as the Chief Joseph dam above.[1]

Pondage is the term for water that can build up behind larger run-of-the-river systems. This is a small amount of water storage where water accumulates during low-demand periods and is used during peak periods when demand is highest. In periods of low electricity demand, or when the plant is inactive the water that would otherwise fall through the spillways and be "wasted" is stored and used when it is needed. Water that is built up in this pondage can result in the elevation of the water varying between 1-1.5 meters during operation.[2] A significant amount of pondage allows the plant to accommodate hourly fluctuations in energy demand.

Since small amounts of water storage in the form of pondage allow run-of-the-river systems to run fully even during off-peak periods, plants with pondage tend to be more efficient than those without.[3]

For Further Reading

References

  1. Wikimedia Commons. (December 29, 2015). Chief Joseph Dam [Online]. Available: https://upload.wikimedia.org/wikipedia/commons/6/6c/Chief_Joseph_Dam.jpg
  2. Foundation for Water and Energy Education. (December 29, 2015). Types of Hydroelectric Projects [Online]. Available: http://fwee.org/nw-hydro-tours/how-the-northwest-hydro-system-works/types-of-hydroelectric-projects/
  3. Electrical Engineering Tutorials. (December 29, 2015). Hydroelectric Plants [Online]. Available: http://www.powerelectricalblog.com/2007/04/hydro-electric-plants-classification.html