Electrical utilities use distribution networks to transmit information such as tariff change and load control commands to end-users by injecting signals at low frequencies at the HV/MV substations level (ripple control system).
Independent power producers connected to the MV network change its impedance and may disturb the level of the signals.
The FAS Active filter is designed to permit an independent power producer to connect to the MV distribution network by efficiently filtering ripple control signals. It prevents the power generators disturbing the ripple control commands sent by the utility from the HV/MV substation.
It works by injecting in the IPP connecting feeder a signal at the ripple control frequency equal in phase and magnitude to the signal measured on the MV network.
This stops the current at the ripple control frequency going into the power generators and maintains the ripple control signals at their original values (before power generators' connection).
Benefits
Facilitates connection - authorisation of the IPP to the MV network
Suitable for a 2-frequency ripple control system
No risk of disconnection of the IPP by the Utility
Regular efficiency checks unnecessary
Key Features
Suitable for IPP connected to MV network voltage:10-15-20 kV
Power Range :
FAS2500 for IPP <2.5 MVA
FAS12 for IPP <12 MVA
FAS20 for IPP <20 MVA
Dual frequency (175-188 Hz)
Remote reading of ripple control measures and internal fault diagnosis
