| Abstract |
Following its research into FACTS (Flexible AC Transmission System), Electricite de France has decided
to install a UPFC (Unified Power Flow Controller) prototype, of about 10 MY AR on the 225 kV transmission network. This article presents a model of the UPFC, using EMTP software (ElectroMagnetic Transients Program). In the first place, a model of the prototype is given, emphasizing the shunt part, the two functions of which are separated. Then, some devices whether physical (varistors) or not (control and command) are described, which provide UPFC protection against faults which may occur on the 225 kV network. Finally, the performance of the model is monitored, first in normal circumstances to check dimensioning and performance (response time and harmonics), and then in short-circuit, to check its capability to compensate for the loss of a link on the network being studied. Using this model, the feasibility of a phase shifter meeting the required specifications may be verified, on the one hand, and on the other, its compatibility with current protection devices on the site where it is installed can be investigated. |
