India needs to
ensure that every
watt of energy
reaching a
household or
industry be used
efficiently.
As per US Energy Information
Administration (EIA), India is
the fourth largest consumer of
electricity after United States, China
and Russia. In spite of being the fifth
largest producer of electricity, India's
annual per capita consumption is
among the lowest. 35 per cent of
Indian population still does not have
access to electricity. For 2011-12,
India's Central Electricity Authority
(CEA) anticipated that there would
be a deficit of 10.3 per cent in base
load energy and 12.9 per cent during
the peak load.
The availability of energy is a
critical parameter which influences
the economic growth of any nation
and quality of life of its citizens. In
the coming years, the demand for
energy will rise significantly in India.
The two major reasons are - firstly,
manufacturing sector is likely to
grow at higher rate and secondly, the
growing domestic demand. As per a
report from CEA, the expected
transmission and distribution losses
in India in fiscal year 2011 was
around 24 per cent.
Considering the facts that India still
does not have adequate power
generation capacity and T&D losses are
so high, we need to ensure that every
watt of energy reaching a household or
industry should be used efficiently.
Smart Grid is one of the solutions, that
helps overcome these energy
constraints to a significant extent. The
worldwide electric-power
infrastructure is a set of interconnected
facilities for power generation,
transmission and distribution called
'Electric Grid'. As the demand for
energy accelerates, the outdated
infrastructure is being modernized by
adding intelligence, communications
and decentralized control and this
complex network is termed as - 'Smart
Grid'. The philosophy behind designing
a smart grid is to device means of
matching the generated and the
consumed energy. The smart grid
makes use of technology to improve
fault detection and self healing features
in the network.
Smart Grid Technology defines the
possibility of improving methods of
power generation, transmission and
distribution. For example, Smart Grid
Technology, devices ways of adding
generated power from renewable
resources to the power available from
electric grid. In the current scenario
the electricity supply which we get
from distribution stations flows in a
single direction. In the smart grid
network, this flow of energy would be
bi-directional. The Indian government
is taking advantage of this fact and
encouraging consumers to generate
energy from renewable sources and
feed the energy back to the grid. In this
way, this technology helps in
generation of additional energy which
eventually reduces the gap of demand and supply.
Many state governments are also
trying to popularise solar based roof top
power plants. In Kerala, the Agency of
Non Conventional Energy and Rural
Technology (ANERT) has received
multiple applications for setting up roof
top solar power plants of 1KW capacity.
Gujarat is already in second phase of
executing solar roof top projects and is
feeding the power back to the grid.
Initially the launch was done with 2.5-
mw projects in Gandhinagar. The
second phase of this project is planned
to target five other cities.
Texas Instruments (TI) offers a
reference design for solar grid tied
inverters based on C2000 series of
microcontrollers (MCU) for its
customers. Solar grid tied inverter is an
essential and most critical component
of the solar roof top project. TI
understands that a reference solution
alone cannot take inverter
manufacturers to production stage for
such complex products. TI has
dedicated teams across various cities in
India to support its customers during
the development phase up to the stage
where the product becomes ready for
production. TI has an extensive support
network in India with 11 offices across
Tier I and II cities in India that enables
us to be present at times when our
customers need us. Being very close to
our customers is critical for us to best
address their needs. TI India is uniquely
positioned to address the Indian
manufacturers' needs with the
industry's broadest and most diverse
product portfolio.
TI is globally accepted as a smart grid
systems partner for secure, economical
and future-proof grid infrastructure,
smart meter and home or building
automation solutions. TI realizes the
importance of implementation of smart
grid technology, so much that it has
formed a dedicated business vertical for
this market. This group focuses only on
developing products which would be
used in designing of equipments which
are the constituents of Smart Grid. TI
provides solutions for the electrical
substations and power distribution
systems. The grid infrastructure
platform combines the voltage &
current sensing, signal processing and
communications. The end equipment
can be data concentrators, substation
automation, and power monitoring
systems for decentralized control.
There are millions of electricity
meters installed across our country. TI's
MSP430TM MCU helps design these
meters, which consumes ultra low
power and are highly accurate to
calculate the units consumed at a
household or at business. The above
features helps state electricity boards to
prevent electricity theft and get
accurate calculation of their revenue.
The usual process of collecting the
consumption data from the installed
meters is manual. Smart grid
technology specifies various methods to
accumulate data, from the electricity
meters installed in the field.
Considering the huge base of electricity
meters installed, it is important that
meters consume very little power for its
operation and communication. Using
LPRF is a popular choice among the
utilities for data exchange between the
smart meters and data concentrators.
TI offers both radio transceivers and
SoC for communicating over sub-1GHz
band or 2.4GHz band.
An alternative mode of
communication can be Power line
communication (PLC). PLC leverages
the existing power line infrastructure
and provides cost-effective approach
for introducing intelligent monitoring
and control to many industrial
applications. It makes PLC one of the
leading enabling technologies for
Smart Grid applications ranging from
smart metering, lighting control, solar,
plug-in electrical vehicle home and
building automation of heat and air
conditioning, and security.
Furthermore, TI offers an integrated,
high performance and cost effective
solution which can be realized when
combining the AFE031, a highly
integrated PLC Analog Front End with
the C20000TM. The AFE031
integrates the transmit filter, power
amplifier, receive filter and PGA in a
programmable integrated circuit
designed just for PLC.
TI has wide range of MCU and DSP
devices which are suitable for low end to high end data concentrators
respectively. Stellaris series of MCU
based on ARM core, from TI is a
popular choice among the
manufacturers of low end data
concentrators. In North America and
Europe, TI's OMAPTM & Sitara series
of DSP are widely used for the high end
data concentrators.
Now days, we have multi functioning
smart meters, which can measure,
display, communicate the consumption
data. These smart meters can
communicate with the home appliances
and can even control these appliances.
It is also possible to monitor and control
the appliances at your home, even if you
are miles away. Such innovative ways
can be extremely useful to save precious
units being consumed.
Smart Grid Technology is commonly
perceived as a bridge for the gap
between the energy generated and
consumed. However, if this technology
is strategically implemented, it will
increase efficiency in production,
transport and consumption, improve
reliability and economic operation,
integration of renewable power into the
grid and increase economic efficiency
through electricity markets and
consumer application.
TI India is uniquely positioned to
address the Indian manufacturers'
needs with the industry's broadest and
most diverse product portfolio. This,
together with an extensive support
network in India, TI has Sales and
Applications offices across Tier I and II
cities in India, which enables us to be
present at times when our customers
need us. Being very close to our
customers is critical for us to best
address their needs.
(Heman Joshi is Technical Sales
Engineer, Texas Instruments (India)
Pvt Ltd)