A method to determine the distributed control setting of looping devices for active distribution systems

To improve operational flexibility, we proposed the loop or mesh structure for distribution systems using looping device called loop power flow controller (LPC) at the opened switch which can connect the adjoining feeder as an active distribution system. LPC is able to optimally control distribution systems in the points of reducing voltage rise, voltage fluctuation and loss minimum power flow control, and so on, with acquisition of state of distribution systems. Adapting to the area that cannot use communication system, points of view at the power quality for the transition phenomena, as assistance to the central control, we also required the distributed control using local voltage information for the LPC control. The purposes of this paper are the application of the proposed determination method for control coefficients using optimal operation pattern of LPC and local voltage information to two LPC and the confirmation of its validity by simulation. The distributed control using these control coefficients was verified by two 6.6 kV 100 kVA BTB (back to back) type LPC and distribution system testing facility in CRIEPI.