Energy Storage is the Holy Grail for Smart Grid
Storage energy is critical to developing the full potential of Smart
Grid, without this tool some promises about a SMART GRID may not be met.
The development of this technology is not only important for Electric
Cars, but for other areas of the Grid.The ability to store energy to
the grid is an important part of making the grid smarter, stored
electricity can be used to provide the load following reserves necessary
to balance and integrate variable renewable energy onto the grid. The
market is shifting toward renewable sources of energy such as wind and
solar. The most desirable situation for a commercial producer of
electrical energy is to supply energy at a constant rate. The reality
requires utilities to respond to rapid changes in demand, and to have a
reserve to meet increases in demand.
There are lots of potential solutions, all have significant
drawbacks, they are not portable, they require expensive infrastructure
and added transmission, and they are inefficient for addressing
short-term sags. The more realistic way to address the short-term sag
problem is with batteries, capacitors or a combination of the two.
As we move toward a green energy future, local production that uses
renewable sources will go a long way to relieve stress on the grid
infrastructure. Energy storage has always been inconvenient, matter in
the form of the ideal storage is energy generated from renewable that
sources are used at the same time they are generated. New technologies
as Nanotechnology, will surely bring a new impetus to this area.
Its four main segments are:
- Electric Car: With only one Electric Car the consumer
will double its residential consumption, imagine the power
consumption of a family with the need to have two or more Electric
Cars. The current infrastructure of transmission and distribution is
not designed to withstand this excess of consumption. Then we have
to build numerous filling stations similar to gas stations, as we
currently have, or stations where we can exchange a discharged
battery for other charges. The batteries could have the appearance
of a rack with several slots you only need to swap the modules of
the slots; this system could be used for electric cars and also for
other applications. But for the consumer is taken to replace your
current car the electric car, it needs to make sure that the
flexibility of supply current is the same for electric vehicles.
- Renewable Energy: Renewable Energy bring constraints on
resource availability, that the current Grid were not designed to
address. Addressing these constraints will require new efforts at
coordination of resources and capabilities within the electric grid,
both to mitigate difficulties and to maximize benefits, and built to
provide energy from different sources for various loads through a
single large interconnected infrastructure.
The system requires
active control, in real time, the resolution of Control in Space and
Time is limited by extant technology and design philosophy.
Intermittent, what we still do not know...
How much advance warning can we get before rapid variations in
Solar and Wind output, and how we can use this information
effectively. What is the point of intermittency of renewable energy
that can cancel the high penetration levels, locally and around the
system? How quickly will vary from aggregate production for large
and diverse collections of resources for Renewable Energy.
Without energy storage will have to maintain an expensive
infrastructure for the supply of energy -- fossil fuel -- on standby
to maintain safety and reliability of the GRID. The intermittency of
renewable energy is well known, although the techniques of
predictability are improving every day.
- Distributed Generation - How Do We Integrate: Time and
space make up the two main factors in the connection and
disconnection of the distributed power generation. The storage of
energy at certain point of the GRID can give us the confidence
necessary to handle this new source of energy generation. Balance
Load and Generation Distributed, there is blend individual Micro
Grid requirements with Grid and market support: It is still common
to hear comments about the instability that we can add to the GRID
with this new topology of Generation Distributed, but Energy Storage
can bring the reliability necessary to supply energy.
- Micro Grid: In many countries we have isolated
populations -- like islands -- in many regions that already use this
topology distribution, energy storage will give comfort and security
of these people. The independence part of your DNA and your goal --
without even knowing it -- it will be like trying to mop up the ice,
the Nordic Countries could serve as an example. Geography, Culture
and Renewable Energy characteristics are crucial for their
development and maturation.
New economic activities will be
developed in these regions with the assurance of continuous supply
of energy that will bring the energy storage. Whoever wants to
control the Micro Grids may lose the battle and war. Its how to
control the Internet, it is impossible! There are no rules, only
exceptions are when we speak of Micro Grids, the regulatory
standards have to be kept to a minimum. If not this way, it may not
be advantageous for those who sell and the buyer. Do not believe the
Micro Grids will connect the network of Utilities, their development
and survival is in its independence.
Faced with such diversity and versatility, it is virtually
impossible to map any topology distribution under the Micro Grid
typical in terms of energy sources or settings, each one tended to
have a different topology, especially remote systems. Barriers to
implementation, in commercial, industrial or residential, do not
rely so much on the topologies themselves, but on the commercial
aspects of operations management. Micro Grids could create a black
market in energy, and worse still, their power sources will not
necessarily clean.
Energy Storage has always been inconvenient, no matter the form of
storage the ideal is that energy generated from renewable sources are
used at the same time they are generated.
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