Step-Voltage Regulator Model Test System

In this paper, a 4-node test feeder will be proposed as the Step-Voltage Regulator (SVR) model test system. The formulation for modelling a SVR bank consisting on three single phase Type A regulators in raise position will be stated in an extended way. However, the procedure to extend the formulation to any other connection will be also explained, and the results consider all possible connections and types. In the literature, there exist standard systems for testing, comparing and validate power transformers models, like for instance the IEEE 4-node test feeder, but the authors did not found any standardised system for testing and validate SVRs models. Thats why the authors decided to modify the IEEE 4-node test system, embedding into it the SVR models implemented with the well known exact model equations.