Phase balancing of North and South feeders of the proposed 10 MVA substation in the distribution system of CEBECO III using genetic algorithm

Date

6-2016

Degree

Bachelor of Science in Electrical Engineering

Major Course

Major in Power Engineering

College

College of Engineering and Agro-Industrial Technology (CEAT)

Adviser/Committee Chair

Roderick L. Catriz

Abstract

The Cebu III Electric Cooperative (CEBECO III) planned to install a 10 MV A substation in Pinamungahan, Cebu. This study aimed to improve the imbalance in the root bus of the north and south feeders of the proposed substation by phase balancing using genetic algorithm. Primary buses where there are no loads connected to it were lumped together to form new single bus. This process resulted in a simplified model of the feeder. The Phase Unbalance Index (PUI) values of the simplified north and south feeders were equal to 15.85% and 30.38%, respectively. For a system to be considered balance, its PUI value must not exceed 10%. After undergoing phase balancing using genetic algorithm, 31 out of 54 buses in the north feeder had changed pahse while in the south feeder, 30 out of 49 buses had changed phase, thus new phase currents in the north feeder were 99.3956 A for phase A, 99.2736 A for phase B, and 99.7427 A for phase C. As for the south feeder, its new phase currents were 48.9957 A for phase A, 49.0009 A for phase B, and 49.01999 A for phase C. The PUI values for the north and south feeder were reduced to 0.2735% and 0.0294% respectively. Likewise, the voltage profiles of the feeders tended to be more balanced after phase balancing. The system was improved since the PUI values of the feeders were reduced and were within the 10% range.

Language

English

Location

UPLB College of Engineering and Agro-Industrial Technology (CEAT)

Call Number

LG 993.5 2016 E64 C35

Document Type

Thesis

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