Abstract
This study uses load factor and loss factor to determine the power losses of the electrical feeders. An approach is presented to calculate the power losses in the distribution system. The feeder’s technical data and daily operation recorded data are used to calculate and analyze power losses.
 This paper presents more realistic method for calculating the power losses based on load and loss factors instead of the traditional methods of calculating the power losses that uses the RMS value of the load current which not consider the load varying with respect to the time. Eight 11kV feeders are taken as a case study for our work to calculate load factor, loss factor and power losses. Four of them (F40, F42, F43 and F45) are overhead lines while the others (F185, F186, F187 and F188) are underground cables. The greater differences between their losses were obtained, due to various types of route length, type, and dimension of conductors. The study takes different configuration feeders for computation with determination in power losses.
Highlights
The civilization development of any country depends on energy
Their method calculated the size and optimum location of distributed generation installation as a result minimized the real power losses, reactive power losses and improved the corresponding voltage profile values. (Mehdi Izadi., et al, 2014) reported a study in which the power loss, energy loss, and loss factor were measured in an actual distribution network; the results indicated that the method proposed for evaluating load was appropriate
The calculation and determination of technical power losses of some different 11 kV feeders of two power substation of Slemani Distribution System has been performed in this paper using load factor and loss factor approach
Summary
The civilization development of any country depends on energy. Within the various types of energy, the electrical energy is considered as the best kind of them (Shahzad Sarwar Bhatti, et al, 2015 ). The electrical power system contains three main stages which are generation, transmission, and distribution. Underground cables, transformers, and some other equipment are used to delivery electric power from generating station to consumers. Consumers connect their loads to the system via distribution part The planning, design, and operation of the electric power system is achieved through the knowledge about distribution sector which is the most significant part of the system (Adegboyega Gabriel A., and Onime Franklin, 2014). One of the major operational challenge facing the distribution power system is the power losses, which can be classified in to two sorts:
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