(a) The circuit of an 11 kV distribution system overhead line and local circuit are shown in Figure Q3.a. -of Vs Line PT, QT Z=R+jx PG. QG VR PL. QL Generation Local Load Figure Q3.a The line has the following parameters; Total Resistance, R: 8.145 2 Total Reactance, X: 5.925 2 If the source voltage, Vs, = 1.03 pu, calculate the approximate maximum load at unity power factor that can be applied to the local network, say due to increased EV charging, before the lower voltage limit of -6% is exceeded under the following conditions; (i) With no local generation. (ii) With local generation using a generator producing 500 kW and 375 kVAr reactive power. The generator is a synchronous type, operating over-excited to produce reactive power.

(a) The circuit of an 11 kV distribution system overhead line and local circuit are shown in Figure Q3.a. -of Vs Line PT, QT Z=R+jx PG. QG VR PL. QL Generation Local Load Figure Q3.a The line has the following parameters; Total Resistance, R: 8.145 2 Total Reactance, X: 5.925 2 If the source voltage, Vs, = 1.03 pu, calculate the approximate maximum load at unity power factor that can be applied to the local network, say due to increased EV charging, before the lower voltage limit of -6% is exceeded under the following conditions; (i) With no local generation. (ii) With local generation using a generator producing 500 kW and 375 kVAr reactive power. The generator is a synchronous type, operating over-excited to produce reactive power.

Power System Analysis and Design (MindTap Course List)

6th Edition

ISBN:9781305632134

Author:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Publisher:J. Duncan Glover, Thomas Overbye, Mulukutla S. Sarma

Chapter3: Power Transformers

Section: Chapter Questions

Problem 3.25P: Consider a single-phase electric system shown in Figure 3.33. Transformers are rated as follows:...

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