Revision history [back]

I am retrieving the voltage angle of the buses in my network via psspy.voltageandanglechannel() however the overall angle of the network seems to be decreasing over time. As all bus voltage angles decrease at the same rate and the angle relative to each other remains the same the load flow is not affected. I have tried using psspy.setrelang() to instruct the simulation to calculate the angles relative to a specific machine however this seems to only apply to the machine angles and not the bus voltage angles. Does anyone know how to do this for the bus voltage angles? Or what may be the cause of this drift in the angles?