There is no net energy flow over one cycle. For half of each cycle, the product of voltage and current is positive, but on the other half of the cycle, the product is negative, indicating that on average, exactly as much energy flows toward the load as flows back. If the load is purely reactive, then the voltage and current are 90 degrees out of phase. In this case, only real power is transferred. At every instant the product of voltage and current is positive, indicating that the direction of energy flow does not reverse. If the load is purely resistive, the two quantities reverse their polarity at the same time. In a simple alternating current (AC) circuit consisting of a source and a linear load, both the current and voltage are sinusoidal. The following ―in quote is taken from under the Creative Commons Attribution-ShareAlike License The relevant theory related to real, reactive, and apparent power should be reviewed in your ECE 231 book before doing the experiment. Submit your one-line diagram file via Moodle. Values you’ll need to enter for the generator, transmission line and loads are given in the appendix on Power world. Place a variable capacitor across the load. Create an oneline Diagram with a transmission line and a series R-L Load connected to a generator.
PreLab:ĭownload and Install PowerWorld on your computer. To understand the power diagram, active, reactive, apparent power, power factor correction and the effect on transmission line losses. Experiment 2: Power Factor Correction Objectives