Package agents.markets.meritOrder

Class DemandBalancer

java.lang.Object

agents.markets.meritOrder.DemandBalancer

public class DemandBalancer
extends Object

Encapsulates the actual market coupling algorithm; Dispatch the demand among energy exchanges in order to maximise the total welfare. To this end, the algorithm reduces price differences of connected markets by transferring demand bids.

Author:

A. Achraf El Ghazi, Felix Nitsch

Field Summary

Fields

Modifier and Type	Field	Description
static double	MIN_SHIFT_AMOUNT_IN_MWH	Minimal amount of energy to be shifted between markets

Constructor Summary

Constructors

Constructor	Description
DemandBalancer(double minEffectiveDemandOffset)	Creates new DemandBalancer

Method Summary

Modifier and Type	Method	Description
void	balance(Map<Long,CouplingData> couplingRequests)	Maximises the overall welfare by balancing the demand among all participant DayAheadMarkets under given transmission capacity constraints. The algorithm guarantees correctness and termination, within some tolerance parameters, by computing and applying two criteria: (1) shifting only the minimal-effective-demand at a time, and (2) processing always the most-effective-pair of {EnergyExchange}s first.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MIN_SHIFT_AMOUNT_IN_MWH

public static final double MIN_SHIFT_AMOUNT_IN_MWH

Minimal amount of energy to be shifted between markets

See Also:

Constant Field Values

Constructor Detail

DemandBalancer

public DemandBalancer(double minEffectiveDemandOffset)

Creates new DemandBalancer

Parameters:

minEffectiveDemandOffset - added to the demand shift in order to enforce price changes

Method Detail

balance

public void balance(Map<Long,CouplingData> couplingRequests)

Maximises the overall welfare by balancing the demand among all participant DayAheadMarkets under given transmission capacity constraints.
The algorithm guarantees correctness and termination, within some tolerance parameters, by computing and applying two criteria: (1) shifting only the minimal-effective-demand at a time, and (2) processing always the most-effective-pair of {EnergyExchange}s first. The minimal-effective-demand is the maximum demand that can be shifted from the more expensive EnergyExchange to the less one without reducing the clearing-price of the more expensive one plus minEffectiveDemandOffset. The most-effective-pair are the two DayAheadMarkets with the largest market-clearing-price difference and allow to shift the minimal-effective-demand from the more expensive to the less (maximal-non-effective-demand). The tolerance parameters are: + minEffectiveDemandOffset which sets how much demand is added to the computed maximal-non-effective-demand to achieve price change via demand shifting.

Parameters:

couplingRequests - map of market id to CouplingData of all markets that have to be coupled - to be updated by this method