Cost curves for energy: Difference between revisions
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== Answer == | == Answer == | ||
<t2b index="Row,Actor,Fuel,Use,Reference,Observation" locations=" | <t2b index="Row,Actor,Fuel,Use,Reference,Unit,Observation" locations="Result,Description" unit="-"> | ||
1|Kuopion energia|Coal and peat|Demand|Current|€,ton|0, -0.06| | 1|Kuopion energia|Coal and peat|Demand|Current|€,ton|0, -0.06| | ||
2|Kuopio market|Coal and peat|Supply|Current|€,ton|0, 0.5| | 2|Kuopio market|Coal and peat|Supply|Current|€,ton|0, 0.5| | ||
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temp[1, ] <- "Deviation" | temp[1, ] <- "Deviation" | ||
data <- rbind(data, temp) | data <- rbind(data, temp) | ||
data <- cbind(data, data.frame( | data <- cbind(data, data.frame(Result = y.new)) | ||
return(data) | return(data) | ||
} | } |
Latest revision as of 14:44, 5 May 2012
Moderator:Jouni (see all) |
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Question
What costs curves should be used for different energy products?
Answer
Obs | Row | Actor | Fuel | Use | Reference | Unit | Result | Description |
---|---|---|---|---|---|---|---|---|
1 | 1 | Kuopion energia | Coal and peat | Demand | Current | €,ton | 0, -0.06 | |
2 | 2 | Kuopio market | Coal and peat | Supply | Current | €,ton | 0, 0.5 |
Parameter ci are estimated from data: it is the current supply or demand given the current price (used as the point where p = 0).
Rationale
For detailed rationale, see Energy balance.
Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle \Sigma f_i(p) = \Sigma (a_i p^2 + b_i p + c_i) = 0}
Failed to parse (SVG (MathML can be enabled via browser plugin): Invalid response ("Math extension cannot connect to Restbase.") from server "https://wikimedia.org/api/rest_v1/":): {\displaystyle p = \frac{-\Sigma b_i \pm \sqrt{(\Sigma b_i)^2 - 4 \Sigma a_i \Sigma c_i}} {2 \Sigma a_i}}
Cost curves are parameterised in the way that the current price p = 0 and therefore the current supply or demand is ci.
When a demand or supply changes, a new price p must be calculated based on fi, and then the supplies and demands of other actors can be calculated, resulting in a new balance.
----#: . There is an alternative way to describe the functions:
- Zero price is considered as 0 €/product unit. The true market price must be known. This function's parameters are more difficult to estimate. --Jouni 06:16, 28 January 2012 (EET) (type: truth; paradigms: science: comment)
----#: . There is also alternative possibilities for functional forms (p is the price of the product):
- Exponential: P0 + P1 * exp(P2*p - P3) --Jouni 17:04, 28 January 2012 (EET) (type: truth; paradigms: science: comment)
Dependencies
Formula
See also
Keywords
References
Related files
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