Electrical Distribution Feeder Analysis

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EE 4225 Project Distribution Feeder Analysis 11/29/2010 Kris Bartell Matt Drzewiecki Evan Zaborski 1.0 Abstract This project offered the opportunity to simulate the voltage profile of an IEEE sample distribution feeder. Through an iterative process, this can be accomplished using a series of calculations. To achieve this goal, the simulation package Matlab was used as the driving force behind the programming and calculating. Discussion 2.1 Individual Segment Modeling To simulate the feeder, the first thing needed is a model of each line segment. To construct this model, code can be written that computes the distances between conductors by using the configurations and conductor values given for each line segment. These…show more content…
To further explore possible outcomes, Case 1 was repeated while varying the load modeling. The first modification that was made was to model all the loads as constant current. The resulting voltage profile is shown in Figure 3.5.1. Unexpectedly, the number of iterations required to achieve the minimum error specification for this load model was much higher than initially predicted. One possible explanation for the increase in iterations is an error in the load modeling portion of the simulation, though one could not be found. Regardless of error, the results have changed from the first case shown in Figure 3.1.1. From this, it can be concluded that the load modeling affects the voltage profile. Figure 3.5.1: Constant Current Load Case 1 was again repeated, this time modeling all of the loads as a constant real and reactive power. The results of this different load model are practically identical to the ones base on the constant current model. The outcome can be seen in Figure 3.5.2. Figure 3.5.2: Constant Real and Reactive Load 3.6. Iterative Analysis Conclusion Using Matlab, it was possible to accurately simulate the voltage profile of the sample distribution feeder using an iterative process. After simulating several various scenarios, some apparent problems arose. In any of the simulated cases, without the use of a voltage
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