Visual power distribution load flow simulator for insertion of distributed generations

In this paper, we developed a visual power distribution load flow simulator (VPDLFS) using a graphic user interface (GUI) so that the injection or the rejection of the distributed generations may be available to the IEEE123 bus power distribution system. First, the load flow calculation program proposes the power distribution composed to have easy exchange of the distribution system to the computer mouse click to the on-line as the dispersion power enables an injection and does visual escaping the limit of a load flow calculation for the existent power distribution. Second, this program may mark the information of a bus, a line, a circuit breaker from the GUI part and the user did so that the distributed power´s injection or cutoff and the injection and the cutoff of the line and the load are available. The developed program consists of a data converter, a load flow calculation program and a GUI, and these 3 parts become to share a memory through the message queue (MQ) command. The closed state and the opened state of the distributed generations significantly affect of the input quantities of the dispersed power visually specifying to 4 places and become so that may be comfortable. The load flow calculation gives an active power, a reactive power, a bus voltage, and a power factor in the near position of each bus to GUI.