Comparative Application of Load Tap-Changing Transformer (LTCT) and Shunt Capacitor for Voltage Profile Enhancement on Nigerian 330kV, 24-Bus Transmission System

Olabode, O.E. and Nwagbara, V.U. and Mathew, T.O (2017) Comparative Application of Load Tap-Changing Transformer (LTCT) and Shunt Capacitor for Voltage Profile Enhancement on Nigerian 330kV, 24-Bus Transmission System. International journal of scientific and technical research in engineering (IJSTRE), 2 (1). pp. 1-13.

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Abstract

The use of conventional devices as control mechanism for system voltage profile enhancement and loss reduction is still predominantly prevalent in most third world nations and Nigeria is never an exemption. This study seeks to compare efficiency of Load Tap-Changing Transformer and Shunt Capacitors using system voltage profile enhancement and real power loss minimization as performance matrix on Nigerian 330kV, 24-Bus grid system as a test case. In this work, the Newton Raphson iterative algorithm was adopted due to its superior features over other iterative techniques. Load flow analysis was performed on the test case with and without incorporation of LTCT and Shunt Capacitors, the result of the analysis shows that with shunt capacitors injection at the weak buses identified, the algorithm converged in 5 iterations but with LTC transformer convergence was achieved in 4 iterations. Also, the total system losses with shunt capacitor injection was found to be 82.2826MW which is about 4.1% reduction while with LTC transformer, the total system losses reduced appreciably to 81.9865MW which is about 4.8% reduction. Incorporation of LTCT gives a better improvement on system voltage profile compared with the improvement observed with shunt capacitor injection at the defective buses identified.

Item Type:	Article
Uncontrolled Keywords:	Load Flow Analysis, Load Tap-Changing Transformer (LTCT), Newton-Raphson Iterative Method, Shunt Capacitors Injection, Voltage Profile Enhancement
Subjects:	T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions:	Faculty of Engineering, Science and Mathematics > School of Electronics and Computer Science
Depositing User:	Joy Oluwabukola Olayiwola
Date Deposited:	18 Aug 2021 12:29
Last Modified:	18 Aug 2021 12:29
URI:	http://eprints.federalpolyilaro.edu.ng/id/eprint/1765

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