Improving the Efficacy of the Nigerian Electric Power Transmission Network Using Static Synchronous Compensator (STATCOM)

Aneke N.e ,N B Ngang

doi:10.7176/jiea/11-2-02

Abstract

This paper deals with the voltage profile enhancement on the Nigerian 330kV transmission power network using static synchronous compensator (STATCOM). Due to increase in power demand, modern power system networks are being operated under highly stressed conditions. This has resulted to difficulty in meeting reactive power requirement especially under planned or sudden changes in voltages, and hence maintaining the bus voltage within acceptable limits has been a major challenge in the power system network, hence the need for this paper which led to the introduction of Static Synchronous Series Compensator into the Nigeria National Grid (NNG) network for the improvement in electric power transmission . The 330kV 58 bus NNG was modeled in PSAT and implemented in Matlab/Simulink for the compensation of the identified voltage violated buses. Transmission network data obtained from Transmission Company of Nigerian (TCN) Osogbo and was used to model the test network. Result of simulations of the network models reveal that STATCOM reasonably improved the voltage stability of the violated buses in the Nigeria network. The insertion of the STATCOM gave 100% improvement in voltage stability relative to a network without any device. Keywords: Voltage stability, STATCOM, HVDC, Voltage profile, FACT, MATLAB/SIMULINK, PSAT DOI: 10.7176/JIEA/11-2-02 Publication date: April 30 th 2021

Highlights

Due to increase in electricity power demand, modern power system networks are being operated under highly stressed conditions
The Nigeria’s electricity demand is rapidly increasing, leading to the power system facilities being operated near their capacity limits, it is assumed that the generating units may need to triple by 2020 to keep up with growing demand, requiring about 10,000 MW of new generating capacity
The term Flexible Alternating Current Transmission System (FACTS) devices describes a wide range of high voltage, large power electronic converters that can increase the flexibility of power systems to enhance AC system controllability, stability and increase power transfer capability (Sharma and Jagtap,2016)

Summary

Introduction

Due to increase in electricity power demand, modern power system networks are being operated under highly stressed conditions. The term Flexible Alternating Current Transmission System (FACTS) devices describes a wide range of high voltage, large power electronic converters that can increase the flexibility of power systems to enhance AC system controllability, stability and increase power transfer capability (Sharma and Jagtap,2016).

Results

Conclusion