References

Electrical specifications for constructive capacities for cogeneration power plants

You can contact the CAPSIM's specialist of this activity:
- By email
- By phone: +33 (0)4 42 63 61 18

U-Q diagram of the cogeneration power plant

Requirement:
In order to be able to connect a cogeneration power plant to the public HVB grid, our customer needed to be able to demonstrate to its energy supplier that its installation complied with their defined specifications. In particular, they needed to provide the following simulations:

Constructive reactance capacity
Dynamic behaviour of the voltage regulation and stability under small movements
Stability under load transfer
Stability under short-circuit
Behaviour of the facility following a dip in voltage
Behaviour of the voltage under variation in frequency

Realization:
CAPSIM used PSIM software to model the network of the cogeneration plant consisting of motor and alternator production units and their speed and excitation control systems. Power flow calculations were carried out to determine the constructive reactance capacities of the power plant.
Dynamic simulations analyzed the stability of the cogeneration plant during disruption events on the network, while a frequency study using PSIM led to determination of the stability margins of the regulated system.

Results:
The study was used:

to demonstrate to RTE that the power plant complied with the specifications,
to negotiate the receipt of exemptions when the criteria of the specifications cannot be respected.

Nyquist diagram for calculation of the stability margins of the control

CAPSIM - 11 Boulevard de la Grande Thumine - Parc d'Ariane, Batiment E1 - 13090 Aix-en-Provence - France
Tel : +33 (0)4 42 63 61 18

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