-
To Develop Mathematical Models For Power Losses Along Transmission Lines And To Minimize The Losses Using Classical Optimization Techniques
CHAPTER ONE -- [Total Page(s) 3]
Page 1 of 3
-
-
-
CHAPTER ONE
GENERAL INTRODUCTION
1.1 BACKGROUND TO THE STUDY
Energy
is a basic necessity for the economic development of a nation. There
are different forms of energy, but the most important form is the
electrical energy, (Gupta, 2008) A modern and civilized society is so
much dependent on the use of electrical energy. Activities relating to
the generation, transmission and distribution of electrical energy have
to be given the highest priority in the national planning process of any
nation because of the importance of electrical energy to the economic
and social development of the society. In fact, the greater the per
capital consumption of electrical energy in a country, the higher the
standard of living of its people. Therefore, the advancement of a
country is measured in terms of its per capital consumption of
electrical energy, (Gupta, 2008).
Power plants’ planning in a way to
meet the power network load demand is one of the most important and
essential issues in power systems. Since transmission lines connect
generating plants and substations in power network, the analysis,
computation and reduction of transmission losses in these power networks
are of great concern to scientists and engineers.
A lot of research
works have been carried out on the above listed aspects.(Zakariya, 2010)
made a comparison between the corona power loss associated with HVDC
transmission lines and the ohmic power loss. The corona power loss and
ohmic power loss were measured and computed for different transmission
line configurations and under fair weather and rainy conditions. It was
pointed out in the work that the general trend of neglecting the corona
power loss is not always valid. It was found from the comparison that,
when the transmission line is moderately or lightly loaded, the
percentage of corona power loss to ohmic power loss could reach up to
one hundred percent especially if the transmission line is operating at a
voltage well above the corona onset value. This percentage is also
found to increase substantially under rainy conditions. Finally, it was
also discovered that, the ratio of corona to ohmic power loss, decreases
with increasing number of bundles. (Numphetch et al., 2011) worked on
loss minimization using optimal power flow based on swarm intelligences.
(Thabendra
et al., 2009) considered multi-objective optimization methods for power
loss minimization and voltage stability while (Abdullah et al., 2010)
looked at transmission loss minimization and power installation cost
using evolutionary computation for improvement of voltage
stability.(Bagriyanik et al., 2003) used a fuzzy multi-objective
optimization and genetic algorithm-based method to find optimum power
system operating conditions. In addition to active power losses, series
reactive power losses of transmission system were also considered as one
of the multiple objectives. (Onohaebi, 2010) considered the
relationship between distance and loadings on power losses using the
existing 330 KV Nigerian transmission network as a case study in his
empirical modelling of power losses as a function of line loadings and
lengths in the Nigeria 330 KV transmission lines while (Moghadam, 2010)
developed a new method for calculating transmission power losses based
on exact modelling of ohmic loss. (Ramesh et al., 2009) looked at
minimization of power loss in distribution networks by using feeder
restructuring, implementation of distributed generation and capacitor
placement method. (Lo, 2006)considered feeder reconfiguration for losses
reduction in distribution systems. Others who researched into power
losses include(Rugthaicharoencheep, 2009),
CHAPTER ONE -- [Total Page(s) 3]
Page 1 of 3
-
-
ABSRACT - [ Total Page(s): 1 ]Availability of electric power has been the most powerful vehicle for facilitating economic, industrial and social developments of any nation. Electric power is transmitted by means of transmission lines which deliver bulk power from generating stations to load centres and consumers. For electric power to get to the final consumers in proper form and quality, losses along the lines must be reduced to the barest minimum. A lot of research has been carried out on analysis and computation of losses ... Continue reading---
