ACHIEVEMENTS
Electrical specifications for constructive capacities for cogeneration power plants
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 supplyer 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.
