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Subject: [OASIS Issue Tracker] (ENERGYINTEROP-704) Aggregated Flexibility and Inflexibility

     [ https://issues.oasis-open.org/browse/ENERGYINTEROP-704?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

William Cox updated ENERGYINTEROP-704:
WD17 Sections 8.4 and 9.4 describe use of supply/demand curves in CTS. The extensible Resource Designator enumeration offers additional resource hence products.

Different market clearing methods are exposed through Market Characteristics - see Section 8.4.

In addition, smaller scoped markets address flexibility in many cases.

> Aggregated Flexibility and Inflexibility
> ----------------------------------------
>                 Key: ENERGYINTEROP-704
>                 URL: https://issues.oasis-open.org/browse/ENERGYINTEROP-704
>             Project: OASIS Energy Interoperation TC
>          Issue Type: Bug
>          Components: cts
>    Affects Versions: CTSPR01
>         Environment: Donald Hammerstrom https://lists.oasis-open.org/archives/energyinterop-comment/202111/msg00008/2111DJH_CTS_Review.pdf
>            Reporter: Toby Considine
>            Assignee: William Cox
>            Priority: Major
>              Labels: ARCH-CONF
>             Fix For: ctsWD15, ctsWD17
> Binary supply or demand flexibility might be acceptable for aggregation of household or building demand and supply. But it is unlikely that dissimilar objectsâ flexibility can be controlled in a binary fashion using the same strike price. Shouldnât DERs supplying utility of different value be prioritized by strike price?
> In principle, a transactive energy system should be able to represent aggregations of bids and offers from sets of objects having binary flexibility, price-sensitive flexibility, and even inflexibility. The aggregation of an object without flexibility with another have binary flexibility is exemplified by Figure 4. In this example, there is no price at which the aggregate supply or demand quantity 
> magnitude can be reduced to zero. A step appears at the strike price of the object offering binary flexibility.
> If CTS were to support the supply and demand aggregations of example of Figure 4, it would need to communicate at least two price/quantity pairs. However, it would be better for CTS to support a greater or indefinite number of such pairs if rich aggregations of supply and demand are to be represented.
> Incidentally, an aggregate curve could very well include both supply (positive quantity) and demand (negative quantity) price/quantity pairs, as would be needed for the indifference supply/bid curve from a battery system performing arbitrage. I recommend the consistent use of signed quantities, like those of panels (b) and (c), because the use of signed quantity avoids separation of an objectâs supply and demand components, as must be done when using unsigned quantities (i.e., panels (a)). Furthermore, the practice of using signed quantities greatly 
> facilitates aggregation, requiring simply that objectsâ quantities be added at all defined strike prices, including inflexible quantities at strike price â.
> See attachment (URI in environment) for graphics

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