Abstract
Design Method: The feeder construction type adopts π－type (nominal π) transmission mode. The total feeder impedance value makes up of feeder impedance and load impedance, and then the feeder impedance value is derived from the hyperbolic function of mathematical formula, and the wire diameter parameter and length by a computer program to calculate. The load impedance composition is divided into two types: resistance parallel reactance or resistance series reactance, and the difference analysis of the feeder current obtained after being connected in series with the line impedance. The impact of voltage changes on the load end, load impedance and adjustment capacitors are deeply analyzed and discussed, and their differences are shown graphically. At the same time, the relationship between the load power factor and the resistance and inductance ratio of the adjusting capacitor and the load impedance are analyzed.
 Design Purpose: Based on the frequent changes in the test data of related equipment parameters during design, the above calculation steps are been complied for a computer programming by MATLAB application software.
 Design Effectiveness: The program has been tested for excellent performance. So that it is a powerful tool for designers to improve the accuracy of repetitive computer programming calculations.
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