The following diagram shows a basic structure of energy distribution. At the plant thermoelectric a three-phase generator feed an elevator transformer which has a 230kVrms output in each of its phases. The relationship that has in said transformer it's 1:60. The transformer acts as a balanced three-phase source which supplies two Triphasic networks in parallel represented by high-voltage lines. These lines of high voltage have a resistance per line of Rw = 10 and are connected to a step-down transformer which represents a balanced load. The step-down transformer presents an output of 15600Vrms, which finally reaches a distribution transformer single phase local that reduces the voltage to 120Vrms. Determine the following: 1. Determine the voltage produced by the three-phase generator. 2. If at any given moment the total load in one of the three-phase networks consumes a power of S = 190kV A with a power factor of 0.9, determine the power average loss in the 6 wires of the line resistors.1

3. Determine the turns ratio of the local distribution transformer. 4. Calculate the primary current of the local distribution transformer when the houses consumes a power of P = 25kW. 5. Assume the following points: A) High voltage networks are in a configuration -, B) The line resistances are equal to zero, C) The load impedances that represents the transformer are equal to Zl = (1 + 2j) k. Calculate phase currents and line in one of the high voltage networks.

Transformador Elevador Lineas de alta tensin Distribucin Local Transformador Reductor Transformador Elevador Lineas de alta tensin Distribucin Local Transformador Reductor