Currents in the synchronous condenser windings at turn-to-turn fault in the rotor winding

This paper describes the simulation of currents in the synchronous condenser windings at turn-to-turn fault in the rotor winding, which is used in electrical power systems for compensation of reactive power and maintain the normal voltage level in the areas of concentration of the consumer loads. To this end, we have developed a mathematical equation model with the method of contour currents for line-to-line voltages, which allows simulating a turn-to-turn fault in the rotor winding of synchronous condenser in a stationary mode. To implement this model, mathematical expressions were proposed to determine active resistances and inductance of winding elements of a mathematical model, in which the active resistances and the data for the calculation of inductances of stator and rotor windings are determined experimentally. The offer a description of the experimental unit and equipment used in the experiments, as well as results of current simulation and measurement in the turn-to-turn mode in the stationary mode. Experiments shows that the proposed mathematical model allows determining currents in the rotor windings by closing its turns with an accuracy of 5-10%.