Two 11 kv lines are feeding to common bus in a
substation,I have one set of CT & PT(3ct,2pt), How can I
measure both lines power using single set.
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Answer Posted / sreejith
connect 2 cts to any 2 phases and 1 pt to one of the 11 kv
line.this will give power by 2 wattmeter method. connect
one ct to any one phase of bus and connect one pt. From
this u can get power in bus as bus will be balanced and
total power will be 3 times one phase power. If u deduct
power in one 11kv line from power in bus u can get power
from 2nd 11kv line
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