What are the circulator currents? I\'m somewhat confused by the per unit impedan

Question

What are the circulator currents?

I'm somewhat confused by the per unit impedances. When we model this as equivalent 1 phase transformers:

We get a primary with phase voltage of 25kv/sqrt(3) and the secondary has an "equivalent" phase voltage of 230kv/sqrt(3). Does that mean my base voltage for the circulator current analysis is done with these base voltages instead of the actual phase voltages of 25k/sqrt(3) and 230kv?

Lifesaver if anyone can provide some info on this "equivalent" phase modelling

Explanation / Answer

circulating currents: when transformers are connected in parallel the following points are applicable 1) voltage should be same 2) frequency is same 3)phase sequence is same if voltages are not same then a small voltage difference is created due to that voltage difference with their internal impedences creates current this current is nothing but circulating current importance of per unit values: our power system network is complex. for analysing the network we represent the values in per unit we can take base values are anything so circulating currents analysis is done with only base values not with actual phase voltages In power systems every values are in P.U only

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.