Abstract
In the ELECTRA EU project, an innovative
approach for frequency and voltage control is investigated, with
reference to future power system scenarios characterized by
massive amounts of distributed energy resources. A control
architecture based on dividing the power system into a web of
subsystems, the so-called cells, is proposed. Cells are individual
control entities but also need to be coordinated together at
system-wide level, in order to ensure secure and reliable overall
operation (at Pan-European level). Task 5.4 in the ELECTRA
project focuses on deriving novel observability concepts at
system-wide scale. The methodology proposed in the task
analyzes the system performance by investigating typical
phenomena peculiar to each stability type and by developing
observables necessary for the novel Web-of-Cells based control
methods to operate properly at cell- and inter-cell level. Crucial
aspects of angle, frequency and voltage stability are considered,
according to the stability classification by CIGRÉ. In order to
carry out the evaluations, a suitable test multi-cell grid model is
developed. The paper aims at describing this reference model
and at presenting the approach used in the task for assessing
system stability in the developed WoC framework.
approach for frequency and voltage control is investigated, with
reference to future power system scenarios characterized by
massive amounts of distributed energy resources. A control
architecture based on dividing the power system into a web of
subsystems, the so-called cells, is proposed. Cells are individual
control entities but also need to be coordinated together at
system-wide level, in order to ensure secure and reliable overall
operation (at Pan-European level). Task 5.4 in the ELECTRA
project focuses on deriving novel observability concepts at
system-wide scale. The methodology proposed in the task
analyzes the system performance by investigating typical
phenomena peculiar to each stability type and by developing
observables necessary for the novel Web-of-Cells based control
methods to operate properly at cell- and inter-cell level. Crucial
aspects of angle, frequency and voltage stability are considered,
according to the stability classification by CIGRÉ. In order to
carry out the evaluations, a suitable test multi-cell grid model is
developed. The paper aims at describing this reference model
and at presenting the approach used in the task for assessing
system stability in the developed WoC framework.
