As shown in the illustration, when transitioning from the electrical plant status indicated by figure "B" to the plant status indicated by figure "C", what is the functional purpose of this transition? See illustration EL-0040.
• Compare kW vs kVAR sharing between generators in figure B and figure C • How changing excitation/voltage on paralleled generators affects power factor and current • Difference between sharing real load (kW) with governors and reactive load (kVAR) with voltage regulators
• From B to C, which quantities stay the same for each generator, and which ones change: kW, kVAR, power factor, or amperage? • In figure C, what relationship do you notice between the two generators’ kVAR, power factor, and current compared to figure B? • When two generators are already carrying equal kW, what is usually the next step if one machine is heavily overexcited and the other is at unity power factor?
• Verify that total kW for the plant is the same in B and C, and total kVAR for the plant is also the same • Check how the power factor and kVAR of each individual generator change from B to C • Confirm whether equalizing amps is the main control objective, or a result of properly sharing reactive load (kVAR) and power factor between the machines
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