The Low Voltage Measurements, Analysis and Control of Transformers in Ado-Ekiti Feeder, Ekiti State, Nigeria
Abstract:
Efficient and proper planning of power system contribute immensely to reliable, clean and adequate power delivery to consumers and these are part of the fundamental challenges to power supply in Nigeria. It is obvious that the loads at the consumers end are variable because the behavioral pattern of consumers are un-predictable at different period. This paper is aimed at carrying out low voltage measurements and analyze the voltage at different transformers in a selected feeder in Ado-Ekiti. PEL 103 power logger was connected to the output bus bars of the feeder pillars from 9a.m to 6 p.m at 30 minutes interval in order to measure the output voltage of each transformer on the feeder. The nominal voltage selected was 230V and the voltage regulation was estimated with the IEEE standard expected to range from 5 to 6 %. Validation of estimated voltage regulations were carried out by the use of bus admittance matrix incidence. The following recommendations were made that the power distribution companies should reconfigure and re-invigorate the feeder by ensuring adequate cross-sectional areas of the conductors, upgrade the transformer kVA rating, feeder rating, and reduction of the distance of the far end consumers by adopting the universal standard. Voltage regulation approaches such as on-load tap changer, LV regulators, auto-transformers and booster transformers should be installed on the distribution network. Future trend of this research should focus on complex regression, deep learning to predict voltage drop along the lines to the consumers at the far end of the transformer substation.
