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1.Simulation of the performance of a transmission-connected demand facility, a transmission-connected distribution facility, or a demand unit with demand response very fast active power control within a demand facility or a closed distribution system shall result in demonstrating whether the requirements of this Regulation have been fulfilled or not.
2.Simulations shall be run in the following circumstances:
(a)a new connection to the transmission system is required;
(b)a new demand unit used by a demand facility or a closed distribution system to provide demand response very fast active power control to a relevant TSO has been contracted in accordance with Article 30;
(c)a further development, replacement or modernisation of equipment takes place;
(d)alleged incompliance by the relevant system operator with the requirements of this Regulation.
3.Notwithstanding the minimum requirements for compliance simulation set out in this Regulation, the relevant system operator is entitled to:
(a)allow the demand facility owner, the DSO or the CDSO to carry out an alternative set of simulations, provided that those simulations are efficient and suffice to demonstrate that a demand facility or a distribution system complies with the requirements of this Regulation or with national legislation; and
(b)require the demand facility owner, the DSO or the CDSO to carry out additional or alternative sets of simulations in those cases where the information supplied to the relevant system operator in relation to compliance simulation under the provisions of Articles 43, 44 and 45, is not sufficient to demonstrate compliance with the requirements of this Regulation.
4.The transmission-connected demand facility owner or the transmission-connected distribution system operator shall provide a report with the simulation results for each individual transmission-connected demand facility or transmission-connected distribution facility. The transmission-connected demand facility owner or the transmission-connected distribution system operator shall produce and provide a validated simulation model for a given transmission-connected demand facility or transmission-connected distribution facility. The scope of the simulation models is set out in Article 21(1) and (2).
5.The relevant system operator shall have the right to check that a demand facility or a distribution system complies with the requirements of this Regulation by carrying out its own compliance simulations based on the provided simulation reports, simulation models and compliance test measurements.
6.The relevant system operator shall provide the demand facility owner, the DSO or the CDSO with technical data and a simulation model of the network, to the extent necessary to carry out the requested simulations in accordance with Articles 43, 44 and 45.
1.With regard to the reactive power capability simulation of a transmission-connected distribution facility:
(a)a steady-state load flow simulation model of the network of the transmission-connected distribution system shall be used in order to calculate the reactive power exchange under different load and generation conditions;
(b)a combination of steady-state minimum and maximum load and generation conditions resulting in the lowest and highest reactive power exchange shall be part of the simulations;
(c)calculating the reactive power export at an active power flow of less than 25 % of the maximum import capability at the connection point shall be part of the simulations in accordance with Article 15.
2.The relevant TSO may specify the method for compliance simulation of the active control of reactive power set out in Article 15(3).
3.The simulation shall be deemed passed if the results demonstrate compliance with the requirements set out in Article 15.
1.With regard to the reactive power capability simulation of a transmission-connected demand facility without onsite generation:
(a)the transmission-connected demand facility without onsite generation's reactive power capability at the connection point shall be demonstrated;
(b)a load flow simulation model of the transmission-connected demand facility shall be used to calculate the reactive power exchange under different load conditions. Minimum and maximum load conditions resulting in the lowest and highest reactive power exchange at the connection point shall be part of the simulations;
(c)the simulation shall be deemed passed if the results demonstrate compliance with the requirements set out in Article 15(1) and (2).
2.With regard to the reactive power capability simulation of a transmission-connected demand facility with onsite generation:
(a)a load flow simulation model of the transmission-connected demand facility shall be used to calculate the reactive power exchange under different load conditions and under different generation conditions;
(b)a combination of minimum and maximum load and generation conditions resulting in the lowest and highest reactive power capability at the connection point shall be part of the simulations;
(c)the simulation shall be deemed passed if the results demonstrate compliance with the requirements set out in Article 15(1) and (2).
1.The model of the demand unit used by a demand facility owner or a closed distribution system operator to provide demand response very fast active power control shall demonstrate the technical capability of the demand unit to provide very fast active power control to a low frequency event in the conditions set out in Article 30.
2.The simulation shall be deemed passed provided that the model demonstrates compliance with the conditions set out in Article 30.