We're working on a 35kV ring bus constructed out of GIS (four buses) and underground conductors. So it will be M-T-M-T-M-T-M-T (back to the first M), with each bus served by a substation transformer running the Delta Var 2 paralleling scheme. The loading on each bus is nearly identical. Typically the ties run open. During transformer maintenance, ties run closed.
Due to the physical layout of the site, we can't make all the tie conductors equal length (Bus 1 to Bus 2 tie is 90 ft and Bus 4 back to Bus 1 is 270 ft). I've been trying to match impedance by using different sizes/sets, but I'm finding that it's not practical. Are line reactors ever used at 35kV to match conductor impedance? I've never used them on the MV side before.
Due to the physical layout of the site, we can't make all the tie conductors equal length (Bus 1 to Bus 2 tie is 90 ft and Bus 4 back to Bus 1 is 270 ft). I've been trying to match impedance by using different sizes/sets, but I'm finding that it's not practical. Are line reactors ever used at 35kV to match conductor impedance? I've never used them on the MV side before.