Abstract

One of the main challenges of the future in the utility sector is constructing the new transmission line corridor. This is due to the fact that land compensation cost associated with the expansion of a new transmission line corridor becomes very expensive and also power transmission efficency is very low. In addition to that, the high carbon emission, which is the major challenge of the world right now, related to the additional conventional energy-based power generation to meet dramatically increased electricity demand and the volatility nature of the existing transmission networks are some of the main drivers to implement FACTS controller in transmission network for flexible, reliable, efficient and stable power transmission. This study accounts modeling of static VAR compensator (SVC), static synchronous compensator (STATCOM), unified power flow controller (UPFC) in a 5-bus transmission system to enhance transmission efficency and the quality of power supplied to the costomer. FACTS devices for improving the transmission line capacity and voltage profile of the power system. The three FACTS controllers are modeled for the standard 5 bus IEEE system based on Newton Raphson algorithm using NEPLAN simulation software in order to investigate their impacts on transmission line capacity and voltage profile improvement. Based on the simulation result, the voltage profile as well as the capacity of the IEEE 5 bus system is improved well by using each of the FACTS controller. From the simulation result we can conclude that the STATCOM and SVC are very efficent in voltge profile improvement whereas the UPFC is well performed for the power transmission capability of the transmission network.

Highlights

  • The FACTS controller gave the opportunity to enhance the capacity of the transmission line close to its thermal limit and increase the controllability of the power system parameters like active and reactive power flow, line current, transmission line impedance, and system operating voltage conventional power system

  • FACTS controllers are categorized as series FACTS controller (SSSC, TCSC), shunt controller (STATCOM, static VAR compensator (SVC), TCR, TSC), Series-shunt FACTS controller (UPFC, GUPFC) and Series-series FACTS controller (IPFC)

  • When the system voltage, where the Static Compensator (STATCOM) is installed, is less than its nominal value, the STATCOM functioned as a capacitor to inject reactive power into the system whereas the STATCOM operates in the inductive mode to absorb extra reactive power from the system when

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Summary

Introduction

The FACTS controller gave the opportunity to enhance the capacity of the transmission line close to its thermal limit and increase the controllability of the power system parameters like active and reactive power flow, line current, transmission line impedance, and system operating voltage conventional power system. It has the capability of improving the stability, power quality and reactive power imbalance of the power system [1,2,3, 27]. The scope of this study is limited to investigate the impact of UPFC, STATCOM and SVC on the voltage quality and power transfer capability improvement of transmission line

Unified Power Flow Compensator
Steady State Load Flow Study
NR Load Flow Model of FACTS
UPFC Power Flow Model
34 OPQ 34 13R4 S
Implemented System
Justification of FACTS Location
Simulation Result with STATCOM
Simulation Result with UPFC
Simulation Result with SVC
Result
Summary
Full Text
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