Abstract
This report is written as part of the project IPN Vannfly. The goal is to analyze what data
is necessary to perform good market analysis in the FBMC capacity calculation
methodology. The topic of this report is the formation of the parameters defining the
flow-based constraints, and two ways of including flow-based grid constraints in a market
model.
The difference between using a detailed grid description and using exogenous grid
constraints is the core challenge of adapting to FBMC. The market actors in the Nordic
region do not have access to a detailed grid description. Instead, it is expected that they
will use exogenous grid constraints published by the TSOs, which are created using a
detailed grid description.
The FBMC methodology is better for predicting physical flow than the NTC methodology,
but it is using an aggregated area approach, which requires linearizing the constraints
around a predicted base case. This works well in practice, since the predicted base case is
usually quite accurate, but the validity of the constraints for different market situations,
and as input to market models, is uncertain.
is necessary to perform good market analysis in the FBMC capacity calculation
methodology. The topic of this report is the formation of the parameters defining the
flow-based constraints, and two ways of including flow-based grid constraints in a market
model.
The difference between using a detailed grid description and using exogenous grid
constraints is the core challenge of adapting to FBMC. The market actors in the Nordic
region do not have access to a detailed grid description. Instead, it is expected that they
will use exogenous grid constraints published by the TSOs, which are created using a
detailed grid description.
The FBMC methodology is better for predicting physical flow than the NTC methodology,
but it is using an aggregated area approach, which requires linearizing the constraints
around a predicted base case. This works well in practice, since the predicted base case is
usually quite accurate, but the validity of the constraints for different market situations,
and as input to market models, is uncertain.
