Saturday, August 13, 2011

POWER SECTOR INDIA COMPARED TO OTHER:



The power sector reforms are high on the government agenda & the Restructured Accelerated  Power Development and Reform Program (R-APDRP) is all set to provide it...

4%..5%..10%..33%..These are the approximate aggregate technical and commercial (AT&C) losses in electricity distribution of four countries-Korea, USA, China, India respectively. And yes,these are figures to stare at.
While we can call Korea an ideal situation, for the US ,a developed economy, and for china ,technologically advanced, any kind of excuse for 33% losses, mostly in distribution does not seem convincing. If you put figures to these losses, it comes out to be a staggering Rs.26,000 crore ! No mean deal this one!!
According to research reports, our power consumption is all set to double from the current 600-700 units in the coming few years. The corresponding per capita average global consumption remains far ahead at 2,600 kWh. The power demand that we are going to face by2030 is going to be about 800 GW of electricity as against the present installed capacity of 140 GW.
All these things indeed are huge challenges for a country looking to register strong, GDP (Gross Domestic Product)growth and may be that is precisely why the government ,for once ,has come up with an elaborate plan for the power transmission and distribution sector in India.
The plan, called Restructured Accelerated Power Development and Reform Program (R-APDRP)has been allotted funds to the tune of Rs.51,577 crore.R-APDRP is a flagship program of the Govt. Of India.Power Finance Corporation has been appointed as the nodal agency for the program.
One good thing about this program is that the government is that the government is actually aware of the powerful role that IT can play in the power sector. The good thing is that it actually bothered to set up a taskforce for IT implementation in the power sector and that this taskforce was chaired by Nandan Nilekani.
The recommendations of this report were put forward only recently and some state projects have already started rolling out!
Hopefully, we shall not be all that powerless down the years , if IT is to step-in and take control...

GRID WORK :  As per the report presented by Nilekani,  aging and poorly maintained assets, unreliable and over loaded systems, low demand side management , lack of skilled  resourses and training  and absence of corporate governance in distribution companies (discoms) are the reasons for high AT&C losses.

Advocating a technology trajectory for energy distribution, Nilekani says that advanced metering was imperative to trim AT&C losses, which are untenable. “IT, communication , and automation to measure and control the flow of power on a real-time basis are key  to manage distribution and check losses. Similarly , a smart grid intelligently manage outages, load and  congestion and shortfall has to become pervasive to use energy efficiently and optimally,” Nilekani points out. IT experts are of the opinion  that a lot can happen in the grid space,and it is here where there is maximum scope of innovation and improvisation.
“The first need in this country is to come to an Indian definition of a smart grid.”Although smart grid is a huge concept of US.
The case of electricity consumption in the US is different. It is like this kid who has been brought up on a lot of candy, and how needs to be put on diet. How ever in india the requirements are entirely different. we need  more and more resources and lesser losses.

INFO TECH-TECHNIQUES:

By these, we mean the various areas, within the power sector where IT can play a part. These have been broadly divided into four.
v  Bringing in more accountability and monitoring  through Business Process Automation(BPA).
v  Offering better Customer  Relationship  Management(CRM).
v  Providing  Geographical Informational System(GIS) mapping  for distribution.
v  Bringing efficiency in terms of billing.

Where, the R-APDRP shall come into force, The first hurdle comes with GIS. GIS-requires huge amount of data in order to function properly and this data is  constantly upgraded  as well. And although, GIS has been proved extremely useful for tracking faults and other locational  purposes,  data management remains a problem.However with IT giants  coming into picture, and bringing  bagful of data management experience with them, things might take a pleasant turn.
Then of course, is a problem of each street being depend upon a transformer. Analytics in such a situation becomes difficult and collating the data thrown up by meter acquisition tools is also a challenge.
According to Tapan Sarkar, head, power division, HCL Infosystems, “In India power has lagged behind as a sector in terms of advancements.
Korea  is so far ahead because it uses high voltage distribution system. In India you can find this development in very limited areas(some places in delhi)since it is a very expensive system.
However,till the industry and the government come together and take innovation in the power sector seriously,there is little that can happen, considering the creaters that lie in our way.








BLUE TOOTH.


What’s in the name?
Before explaining how bluetooth works, I thought of telling you the story of the birth of its name, Bluetooth! The word Bluetooth was borrowed from the 10th century, second King of Denmark, King Harald Bluetooth. He was well known for bringing together Scandinavia. He played a major role in uniting Denmark and Norway and in the introduction of Christianity. To show the significance of bringing together different devices and enabling communication between them, Bluetooth technology got its name after this king. 
Bluetooth is a technology, whereby, devices communicate wirelessly to achieve data transfer at the rate of 720kbps within a range of 10 to 100 meters. It operates in the unlicensed ISM (Industrial Scientific and Medical) band at 2.4 gigahertz.

How does bluetooth work?

Now, about how bluetooth works … Bluetooth Special Interest Group manages and maintains the Bluetooth Standard. IEEE has accepted it as 802.15la standard. Bluetooth was developed with a purpose of creating a single digital wireless protocol, capable of connecting multiple devices and getting over the synchronization issues. It enables short-range wireless communication thus replacing wires connecting the electronic devices. 

The Bluetooth RF transceiver lies at physical layer. There are 79 bluetooth channels spaced 1MHz apart. A spread spectrum technology is used at the physical layer. Both voice and data transmissions over short distances are possible, creating wireless PANs. 
A bluetooth device consists of an adapter. A Bluetooth adapter can be built into a device or can be in the form of a card that connects to a device. Instructions are embedded into the device, which enable it to communicate with other devices.
When devices come in each other’s radio range, their link managers discover each other. Link management protocol (LMP) engages itself in peer-to-peer message exchange. LMP layer performs link setup and negotiation of packet size. Segmentation and reassembly of packets is done, if needed.
Service delivery protocol enables a bluetooth device to join a piconet. A device inquires what services are available with the piconet. Bluetooth GlobalID is exchanged between the devices. Their profiles are matched and a connection is setup.
Bluetooth uses frequency hopping in timeslots, which means that the bluetooth signals avoid interference with other signals by hopping to a new frequency after transmission or reception of every packet. One packet can cover up to five time slots.

Bluetooth can support an asynchronous data channel, or up to 3 simultaneous synchronous voice channels, or a channel, which concurrently supports asynchronous data and synchronous voice. 
Bluetooth technology makes use of the concept of master and slave. Devices have to wait until the master allows them to talk! One master and up to seven slaves employ a star topology to form a piconet.

Bluetooth Application Models

File Transfer: -This model talks of an object transfer or transfer of files between devices.

Internet Bridge: -In this model, a cordless modem acts as a modem to a PC and provides dialup networking and faxing.

LAN Access: -Multiple data terminals use a LAN access point (LAP) as a wireless connection to an Ethernet LAN.

Synchronization: -Synchronization model provides a device-to-device synchronization of data.

Headset: -It is wirelessly connected and can act as an audio input-output interface of remote devices. 

Piconet: -A group of devices connected by means of Bluetooth technology in an ad hoc manner is known as a piconet. There can be a maximum of 8 devices forming one piconet. For the duration of a piconet connection, one device acts as the master and others act as slaves in order to synchronize.

Scatternet: -A scatternet is composed of two or more independent piconets. This brings about a communication between piconets.

Master unit: -Its clock and hopping frequency are used to synchronize other devices in the piconet. The master device numbers the communication channels.

Slave unit
: - The slave units act in co-ordination with the master.
                                                             -Galileo