International Research Journal of Engineering and Technology (IRJET) e-ISSN: 2395-0056
Volume: 05 Issue: 08 | Aug 2018 www.irjet.net p-ISSN: 2395-0072
© 2018, IRJET | Impact Factor value: 7.211 | ISO 9001:2008 Certified Journal | Page 684
Loss Reduction in Agricultural Feeders Through HVDS Concept
Namrata Shrivastava
1
, Ashok Soni
2
1
Student,Gyan Ganga College of Technology, Jabalpur
2
Professor, Gyan Ganga College of Technology, Jabalpur
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Abstract - In the past, the consumption of electricity is prime
motto, as it is available in lot with a capacity to do work, but
as the time spent, now time is to conserve the electricity not to
consume the electrical energy. In fact, it has become essential
ingredient for improving the quality of life and its absence is
associated with poverty and poor quality of life. Sub-
transmission and distribution systems constitute the link
between electricity utilities and consumers. Efficient
functioning of the segment of the electricity utility is essential
to sustain the growth of the power sector and the economy of
the country. So, the present situation is characterized by
unacceptable high losses, power quality and reliability of
supply, billing sector, revenue collection, frequent
interruptions in supply and thus consumer dissatisfaction etc.
Distribution Sector requires economical system to provide
electrical energy at a suitable prize and at a minimum voltage
drop to reduce the voltage regulation. So, we require the
economical way to provide the electrical energy by State
Electricity Boards to various consumers at minimum voltage
drop and reduce the regulation of voltage. This paper presents
the various aspects of High Voltage Distribution System
commissioned for improvement of voltage drop profile in the
distribution sectors for economical way to customer’s
satisfaction.
Key Words: Annual Savings; feeder; High Voltage
Distribution Sytem; Payback Period.
1. INTRODUCTION
)n agricultural area, )ndia’s power sector is characterized by
inadequate power supply and financial insolvency. The
efficiency of the existing distribution is generally low and the
system losses are untenably high specifically at the long low
tension (LT) networks. The delivery of power from sources
to the consumer points is always accompanied with power
losses. Such non-negligible amount of losses has a direct
impact on the overall efficiency and financial issues of the
existing distribution system. Therefore, method for losses
reduction is essential for achieving the financial goals of
distribution companies. To make it easier to investigate
losses in electrical distribution system; it is helpful to divide
different types of losses into two categories as Technical
losses and Non-Technical losses. Reduction of technical
losses leads to a real gain in energy and reduced capital-
intensive investments. On the other hand, the reduction of
non-technical losses improves the financial balance of the
company concerned. Technical losses consist I2R losses
which occur especially in overhead distribution lines. The
electrical energy losses in distribution lines are wasted in the
form of I2R losses. These I2R losses are current depending
losses and mainly caused by the use of low voltage in
distribution. As in the existing distribution system; the
current is high due to low voltage and thus occurs more I2R
losses [1,2]. Technical losses also include transformer losses.
The transformer losses can be classified into two
components, namely, no-load and load losses. No-load losses
occur from the energy required to retain the continuously
varying magnetic flux in the core and its invariant with load
on the transformer. Load losses are a function of the winding
current. It mainly arise from resistance losses in the
conducting material of the windings and it varies with load.
The other category, the non-technical losses mainly include
electricity theft in existing distribution system. Electricity
theft is done by direct hooking of loads in LT lines. Non-
technical losses are also known as DzCommercial lossesdz.
Mostly, non-technical losses are associated with LT lines. In
some regions, the electrical energy is illegally taking from
the nearest LT line. Electricity theft by direct hooking and
making unauthorized connections are the most common and
visible form of non-technical losses. Hence, these
unauthorized load connections are the main sources of the
non technical losses. In this paper, I^2R losses and payback
period is determined.
1.1 DISTRIBUTION SYSTEM:
The primary and secondary power distribution network,
which generally concerns the consumer in India, is the
distribution network of 11kV lines or feeders downstream of
the 33kV substation. Each 11kV feeder which emanates from
the 33kV substation branches further into several subsidiary
11kV feeders to carry power close to the load points
(localities, industrial areas, villages, etc). At these load
points, a transformer further reduces the voltage from 11kV
to 415V to provide the last-mile connection through 415V
line also called as Low Tension (LT) line to individual
customers, either at 240V as single-phase supply or at 415V
as three- phase supply. A feeder could be either an overhead
line or an underground cable. In urban areas, owing to the
density of customers, the length of an 11kV feeder is
generally up to 3 kms. On the other hand, in rural areas, the
feeder length is much larger even up to 20 kms. A 415V line
should normally be restricted to about 0.5-1.0 km. In existing
distribution systems, the voltage at buses reduces when
moved away from the substation, also the losses are high.
The reason for high losses is the use of low voltage for
distribution as the current is high in the low voltage system