The restrict earth fault on my unit transformer 169MVA 161kv has been operating any time there is fault in the Grid. On one of the disturbance records , it was observed the polarity of the High side CT and neutral CT were the same. Am tempted to reverse the polarity of the Neutral CT. I would...
rcwilson i appreciate your explanation , i will still be interested in the effects due to MVAR/Voltage/Load interactions that are occurring, i want to really understand this , any links will also be appreciated.
Thank you again, I guessed so initially too, what baffles me is during off peak periods the drop is very small,and the slightest increase in MWARs result in a significant change in system voltage, however during peak periods the drop turns be very big. Any reason for this?
Thanks for the information,the other explanation i needed is , why do I normally achieve high voltages on the generator side but on the system the voltage still remains low, for example usually for the current tap position 14.4/161kv i achieve 15kv but the system voltage is still low about...
I run a power station with generator rating 110MW 0.8 pf, 14.4KV which is connected to the grid at 161KV through a 165MVA 14.4/161kv transformer and synchronize at 14.4kv.
During peak hours the corridor experiences low voltages although we try to keep up our vars to improve voltages the system...