Smart distribution transformer for secondary voltage regulation and load modeling

The distribution networks have been subjected to increased demand for electricity and the inclusion of distributed generation (DG), which have affected the voltage regulation. In this work, it is proposed a smart distribution transformer, which encompasses an electronic on-load tap changer and a communication system. In addition to the automatic or remote voltage regulation, the system enables to identify the load model at the interface between primary and secondary distribution systems. These characteristics permit the enhancement of the power quality, along with the improvement of the distribution system operation, planning and revenue management. The main focus of this work is the load parameter identification, which is validated by a simulation tool and experimental results.