On three phase distribution electric network unmeasured parameters identification based on AMRCS data

The paper considers electrical network (DEN) of 0,4 kV functioning in the asymmetrical mode. The task to identify unmeasured parameters (currents and voltages) of DEN interpersonal sections using the data of automated meter reading and control system (AMRCS) is set. The paper suggests a method based on the division of the initial network structure into three virtual subsystems represented by the network phases to solve the set problem. Tthe principle of superposition allowed obtaining mathematical relations, the analysis of which explicitly identified the desired parameters network. The peculiarity of the method is that the implementation of the network power losses identifying procedure does not require a complex description of its state variables, which simplifies its computational scheme. The obtained results shall be applicable to create an algorithmic and special software for the subsystem of the distribution network electric power losses operational monitoring as part of AMRCS.