In the results for the load flow analysis why are the voltages so low/high?
If the voltages are low throughout the system, it is likely that the voltage at the source element (supply point) is too low. Typically the supply voltage to a system is a few percent above the nominal voltage. Also make sure you check taps on substation transformer. Most of the time, substation transformers are tapped to boost the voltage on the secondary so that the voltage at the low voltage bus is above nominal. If the voltage is only low is certain places (e.g. ends of feeders), make sure the feeder loading is reasonable and that you have defined an adequately sized conductor along the feeder. A conductor with too high an impedance, or too much load, will cause larger voltage drops along a feeder.
