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Application Of Fuzzy Logic Technique For Power Loss Reduction In The Nigeria 330kv System
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To improve the overall efficiency of the power system, the performance
of transmission system must be improved. Some of the vital ways of
achieving this objective is by reducing power losses in the system and
also improving voltage profile. An important method of controlling bus
voltage is by shunt capacitor banks in the transmission substations. The
capacitor absorbs reactive power flow in the system, thus improving
power factor. When this is done, active power is also improved. In this
work, a 10-bus transmission system is taken as model. Newton-Raphson’s
power flow program is executed using MATLAB toolbox to obtain p. u nodal
voltage ranging from 0.8890 to 1.0564, total real power line losses
(0.09438 p.u), and total reactive power line losses (0.36970 p. u). By
using power loss reduction, power loss index is evaluated and normalized
in the range [0, 1]. These indices, together with the p. u nodal
voltage magnitude, is fed as inputs to the Fuzzy Inference System to
obtain Capacitor Suitability Index (CSI). The CSIs obtained, ranges from
0.244 to 0.897. The values of the CSIs determine nodes most suitable
for capacitor installation. Experimentally, highest values of CSIs are
chosen for capacitor installation. As a result, 3 buses (3, 8, and 10)
with CSI values of 0.680, 0.750, and 0.897 respectively, are chosen.
Capacitor sizes of 50MVar, 85MVar, and 60MVar (obtained from Index Based
Method) are installed on the buses. Voltage profile improves by 3.74%,
3.27%, and 3.33% respectively, while total real power loss in the system
reduces by 17.55% and total reactive power injection to the network
reduces by 8.70% respectively. Overall, system stability and efficiency,
hence, reliability, are improved by installation of capacitors at
suitable locations in a transmission system.
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CHAPTER ONE - [ Total Page(s): 2 ]CHAPTER ONEINTRODUCTION1.1 Background of StudyElectrical
energy is generated at power stations which are usually located far
away from load centres [1]. Thus, a network of conductors between the
power stations and the consumers is required in order to harness the
power generated. This network of conductors may be divided into two main
components, namely, the transmission system and the distribution system
[1]. As power flows in the lines, a significant amount is lost.
Accurate know ... Continue reading---
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CHAPTER ONE - [ Total Page(s): 2 ]CHAPTER ONEINTRODUCTION1.1 Background of StudyElectrical
energy is generated at power stations which are usually located far
away from load centres [1]. Thus, a network of conductors between the
power stations and the consumers is required in order to harness the
power generated. This network of conductors may be divided into two main
components, namely, the transmission system and the distribution system
[1]. As power flows in the lines, a significant amount is lost.
Accurate know ... Continue reading---
ABSRACT -- [Total Page(s) 1]
Page 1 of 1
ABSRACT -- [Total Page(s) 1]
Page 1 of 1