Difference between revisions of "Flexibility (Power System)"
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According to the International Energy Agency, the flexibility of a power system refers to "the extent to which a power system can modify electricity production or consumption in response to variability, expected or otherwise"<ref>International Energy Agency (IEA), Harnessing variable renewables., Tech. rep.;fckLR2011</ref>. Another source described it as "the modification of generation injection and/or consumption patterns in reaction to an external signal (price signal or activation) in order to provide a service within the energy system" <ref>"Flexibility and Aggregation Requirements for their interaction in the market". Available at:fckLRhttp://www.eurelectric.org/media/115877/tf_bal-agr_report_final_je_as-2014-030-0026-01-e.pdf</ref>. | According to the International Energy Agency, the flexibility of a power system refers to "the extent to which a power system can modify electricity production or consumption in response to variability, expected or otherwise"<ref>International Energy Agency (IEA), Harnessing variable renewables., Tech. rep.;fckLR2011</ref>. Another source described it as "the modification of generation injection and/or consumption patterns in reaction to an external signal (price signal or activation) in order to provide a service within the energy system" <ref>"Flexibility and Aggregation Requirements for their interaction in the market". Available at:fckLRhttp://www.eurelectric.org/media/115877/tf_bal-agr_report_final_je_as-2014-030-0026-01-e.pdf</ref>. | ||
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= Flexibility: Why It Matters = | = Flexibility: Why It Matters = | ||
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There are many services the operators of a power system must consider to make the grid stable. Renewable sources, together with some battery storage, can already perform some of these services better than a conventional power system<ref>"Powering into the Future: Renewable Energy & Grid Reliability". Available at: http://www.mjbradley.com/sites/default/files/Powering_Into_the_Future.pdf</ref>. For example, renewable sources can supply reactive power (and therefore voltage response) even when they are not giving real power, and batteries can perform frequency response better than conventional sources<ref>http://reneweconomy.com.au/tesla-big-battery-moves-from-show-boating-to-money-making-93955/</ref>. | There are many services the operators of a power system must consider to make the grid stable. Renewable sources, together with some battery storage, can already perform some of these services better than a conventional power system<ref>"Powering into the Future: Renewable Energy & Grid Reliability". Available at: http://www.mjbradley.com/sites/default/files/Powering_Into_the_Future.pdf</ref>. For example, renewable sources can supply reactive power (and therefore voltage response) even when they are not giving real power, and batteries can perform frequency response better than conventional sources<ref>http://reneweconomy.com.au/tesla-big-battery-moves-from-show-boating-to-money-making-93955/</ref>. | ||
| − | However, current capacity of dispatchable renewables or batteriers is not enough to cover variations of the residual load curve. So flexibility of a power system must still be performed mainly by conventional dispatchable sources, with the aid of some demand response. | + | However, current capacity of dispatchable renewables or batteriers is not enough to cover variations of the residual load curve. So the (residaul load) flexibility of a power system must still be performed mainly by conventional dispatchable sources, with the aid of some demand response. |
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= Flexibility: Supply Side = | = Flexibility: Supply Side = | ||
Revision as of 04:56, 23 January 2018
Flexibility: Concept Definition
According to the International Energy Agency, the flexibility of a power system refers to "the extent to which a power system can modify electricity production or consumption in response to variability, expected or otherwise"[1]. Another source described it as "the modification of generation injection and/or consumption patterns in reaction to an external signal (price signal or activation) in order to provide a service within the energy system" [2].
Flexibility: Why It Matters
There are many services the operators of a power system must consider to make the grid stable. Renewable sources, together with some battery storage, can already perform some of these services better than a conventional power system[3]. For example, renewable sources can supply reactive power (and therefore voltage response) even when they are not giving real power, and batteries can perform frequency response better than conventional sources[4].
However, current capacity of dispatchable renewables or batteriers is not enough to cover variations of the residual load curve. So the (residaul load) flexibility of a power system must still be performed mainly by conventional dispatchable sources, with the aid of some demand response.
Flexibility: Supply Side
Flexibility: Demand Side
Ways to Improve Flexibility
- ↑ International Energy Agency (IEA), Harnessing variable renewables., Tech. rep.;fckLR2011
- ↑ "Flexibility and Aggregation Requirements for their interaction in the market". Available at:fckLRhttp://www.eurelectric.org/media/115877/tf_bal-agr_report_final_je_as-2014-030-0026-01-e.pdf
- ↑ "Powering into the Future: Renewable Energy & Grid Reliability". Available at: http://www.mjbradley.com/sites/default/files/Powering_Into_the_Future.pdf
- ↑ http://reneweconomy.com.au/tesla-big-battery-moves-from-show-boating-to-money-making-93955/
