1. Power quality monitoring in the French distribution system
Three applications for power quality / reliability data
Regulatory
To prove that regulatory or contractual commitments are fulfilled
Technical
To evaluate and follow the network’s performance
Services
To provide users with historical data and customise contracts

2. A new power quality monitoring policy adopted by EDF Distribution in 2002
Interruption data is collected with a system based on the distributor’s SCADA
Measurements are performed
At the delivery point of users who have subscribed a “customised” PQ contract
Downstream of every HV/MV transformer
In case of complaint
Various measurement devices are used
Fixed / mobile network analysers
Meters with limited PQ functions
All metering points will be equipped within 10 years

3. An information system to analyse and store PQ measured data