Method and system for online passive detection of phase connection of power meters

A passive phase connection detection method for feeder power lines of an electricity distribution network, the method comprising:

• acquiring a list of meters for each feeder power line of the electricity distribution network;
• acquiring presumed phase connection data and historic voltage data of each meter of the list of meters of each feeder power line;
• assigning weight values to the presumed phase connection data to each meter of the list of meters of a first feeder power line;
• initiating an analysis algorithm when new voltage data is detected for a first meter of the first feeder power line, wherein the analysis algorithm comprises:
• calculating, for the first meter, the change in voltage between new voltage data and historic voltage data;
• identifying, for the first meter, the phase connection of the meter based on the voltage difference of neighbouring meters of the list of meters of the first feeder power line that are within a predetermined threshold number of the nearest neighbour meters;
• incrementing the assigned weight values of the phase connection of the first meter if the identified phase connection is most common amongst the nearest neighbouring meters;
• assigning the meter to the phase connection with greatest assigned weight;
• and
• repeating the analysis algorithm for a next meter of the first feeder power line.