EFY Times  
Thursday, August 21, 2014

 
GO
 
 

What Caused The Biggest-Ever Blackout In India?
 
Home >> Infotech >> Features
 
What Caused The Biggest-Ever Blackout In India?  
 
684 million people. 57 per cent of India. 10 per cent of the globe suffered the worst power failure recently. Take a peek into the cause of darkness.   
Rate this news:  (7 Votes)
Friday, August 03, 2012 The Northern region of India including the states of Delhi, Punjab, Haryana, Himachal Pradesh, Uttar Pradesh, Rajasthan and Jammu and Kashmir was fast asleep when the disaster occurred at around 2 am on the night of 29 July that seemed to look like a mere power failure. Everyone woke up to the news of the collapse of the Northern Grid due to overdrawing of power by some states. The authorities were successful in restoring power by Monday evening but again the nightmare re-appeared on 31 July. This time including West Bengal, Odisha, Jharkhand, Bihar, Sikkim, Assam, Mizoram, Manipur, Nagaland, Meghalaya and Arunanchal Pradesh.

blackout in India, Northern Grid failure




Three inter-state transmission networks collapsed together and more than half of India was thrown out of gear because certain states in the northern region overdrew power due to low rainfall in the region, which led to the tripping and ultimate collapse of the Northern Grid. Uttar Pradesh, Haryana and Punjab are suspected but all of them have denied it.

So, how is rainfall to be blamed for the disaster? Deficient rainfall causes increased use of electric pumps by farmers to withdraw water for farming in agricultural states. But can farmers of three states make 20 states in India to go powerless?

Let's look at the structure of electricity grids in India. India is divided into:

Northern (NR)
Eastern(ER)
Western (WR)
Southern (SR)
North-Eastern (NER)

The NR, ER, WR and NER are inter-connected, and are called the New Grid. The Southern zone is synchronously interconnected to the New Grid. Each of the zones takes care and monitors the power need of the states that fall under it. A load dispatch centre in every zone monitors the power transmission from the generating plant to the states. Every state has to calculate its power demand and accordingly buy power. The states have to stick to the maximum consumption limit.

The Power Grid Corporation of India has a 95,009 circuit-km of transmission network, 1,36,358 MVA transformation capacity and around 28,000 MW inter-regional power transfer capacity. The main problem is that the power generating plants are scattered across the county and the functioning, from power generation to power distribution is pretty complex.

There are two terms in the distribution of power. Inter-state transmission and Intra-state transmission. In each of these five zones, power is generated from the concerned power plant and plants are subjected to inter-state transmission. The regional load dispatch centres monitor and control its distribution to the member states that fall in its zone.

After that, the intra-state transmission takes over, in which each of the states’ load dispatch centre distributes power to various region as per the demand and then the process is further divided at the local level by stepping down the power (wattage) at each substation because different zone require different voltage like Metro, railway service require current at a high potential difference compared to local housing which needs just 220V.

The disaster was simply caused by excessive demand. Certain states did not adhere to the power limit which tripped the entire grid. Excess demand caused the grid frequency to cross the permissible limit of 49.5 Hz to 50.2 Hz, as defined by the Indian Electricity Grid Code. For those who are unaware of this, check the rating of any of your household device. You will notice it’s stated as 220V 50Hz AC.

The power is supplied by large rotating AC generators turning in sync with the frequency of the grid. The frequency of all these generators will be identical and is tied directly to the RPM of the generators themselves. If there is sufficient power in the generators then the frequency can be maintained at the desired rate i.e. 49.5 Hz to 50.2 Hz.

A slight increase in grid frequency can throw the entire system out of sync. The entire grid collapses and it takes at least 6 hours to restart the process. The North and Eastern grids are connected under the New Grid. The damage caused by the failure of the Northern Grid was collaterally transferred to the North Eastern and Eastern power grids on 31 July. Thus, the entire disaster recipe was cooked in this fashion.


Debashis Sarkar, EFYTIMES News Network


Print Email Post Comment 
(Total Views: 3871)
 
Share

 
 
Infotech News
   
16.37 Per Cent Users Still Run Windows XP, Kaspersky Lab Statistics Say
8 Tips To Make Life Smoother For Programmers
myMail Leaps To Become The Most Popular Alternative Email App For Android And iOS In India
Gartner Identifies Eight Steps To A Compelling Business Case For Social Initiatives
Sony Xperia M2 Aqua Introduced With Best Waterproofing Features
 
 
 
     
     
     
     
     
     
Most popular
 

Daily

Weekly

Overall

Features
8 Tips To Make Life Smoother For Programmers
Dream to become a great programmer? We are here to help you with some non-technical tips to make that happen....
15 PHP Security Best Practices On Linux
Stay secure from unwanted PHP attacks. Here are the commands to help you out....
Learn To Compile And Run C/C++ Code In Linux: 10 Steps To Follow
Move on from MS-Windows and create C/C++ programs on Ubuntu Linux. We are here to help you....
30 Useful Tips to Give You Better FreeBSD Experience
Using FreeBSD takes a new turn for you as we provide with some of the best tips and tricks here....
Indian Labour Class Needs To Be Improved In MSME Sector, Says Government Official
If India is to be developed as an all-rounder, then it's necessary to think about the main ingredient of our industry, the labour class....
Top 10 Apps For Best Productivity On Linux
If you have been waiting for some best solutions to improve your productivity level, you are at the right place as we have listed some of the best app...
8 Most Useful Tips For C++ Programming
Mastering C++ can be an easy task if you have the right 'guide' at hand. We are there to help!...
KDE Releases First Bugfix Update To Plasma 5
Although Plasma 5 is still in early stages of development lacking many features, it is still quite useful a resource for a majority of users....
Ways To Use Linux To Fix Your Windows PC
Linux can be used to solve many Windows problems, here are a few!...
BitTorrent & Privacy Basics For You!
We give you some tips on maintaining your privacy and security while using BitTorrent....
Shell Scripting Basics For Newbies!
Before you get started with Shell Scripting, there are some basics that you should know....
Here Are 5 Serious Flaws In An Otherwise Secure HTTPS-SSL
It is quite possible to compromise a 'secure' HTTPS communication. Although it is any day far ahead than what HTTP has in store, HTTPS is clearly not ...
Electrify Your Bike With The Barak e-Bike Kit!
The Barak Electric Bicycle Coversion Kit is made up chiefly of four parts: a battery, controller, motorised wheel and the throttle. ...
Your One Stop Guide To Different Types Of Resistors
Here's a handy list of different types of noteworthy resistors with their brief descriptions....
Debunking 5 Major Myths About Linux
Linux is awesome, it's high time haters understand this!...
 
  View All
Dialogue
 
10 Questions That Google Never Asks While Hiring!
Here is a list of 10 questions that Google just banned from their interviews....
For Enjay, Open Source Technology Is A Way Of Life
An entirely open source-based company, Enjay IT Solutions, has built itself a reputation in the OSS domain....
Switching To Tizen Doesn’t Mean We Are Abandoning Android: Samsung
The company has worked to build Tizen up from scratch and has now introduced it to developers and the general public with its latest range of wearable...
Venturing Into The Cloud? Develop A Customised Cloud Strategy First!
Diksha P Gupta speaks to Rushikesh Jadhav, cloud evangelist, ESDS Software Solution Pvt Ltd, on how the cloud has changed the way compan...
HTC Is Strong And There Are No Plans Of Sale Now Or In Future, Says HTC's Senior Director-Marketing
Atithya Amaresh from EFYTimes had an exclusive chat with Sirpa H. Ikola, senior director, Marketing, South Asia, HTC about its devices and its plans w...
   
  View All
Videos
 
First Look: LG Optimus G
The phone sports a high-end display and comes powered by a powerful processor. ...
Create QR-Codes For Free
TEC-IT releases the freeware QR-Code Studio to provide a quick and convenient way of QR code creation for every application scenario....
DoT Secretary Shares Plans For Growth Of Telecom Sector
M.F. Farooqui has recently taken charge as secretary, Department of Telecom....
Hands-On: Sony Xperia Z
Xperia Z is Sony's first entrant model in the big-screen smartphone category. ...
Hands On: Videocon A30 Smartphone
Videocon, the consumer electronics company which is known for its refrigerators, washing machine and air-conditioner has unveiled its Android-based sm...
   
View All
   
 
MWC 2014
 
MWC 2014: Tablet Lets People Feel Textures On Its Screen
Now feel what you see on your tablet, by way of ultrasonic waves....
MWC 2014: 4K Android Tablet Games To Kill Consoles, iPad
Tablet makers like Samsung want to beat the iPad by making 4K tabs. ...
MWC 2014: This Vodafone Backpack Helps Get Network In Disaster Situations
Two engineers of Vodafone New Zealand displayed the "mini" mobile network by Vodafone substructure in a backpack. ...
MWC 2014: Wilocity Chipset To Bring 'Lightening' Speed To Mobile Phones
Wilocity has developed a WiGig chipset for mobile phones that will bring lightning-fast wireless capability ...
MWC 2014: Samsung Introduces Octacore, Hexacore Chipsets
The Korean giant, Samsung unveiled two new octacore and hexacore chipsets at MWC 2014, in Barcelona. The company previously used Exynos 5 Octa 5410 ch...
MWC 2014: Alcatel Unveils PIXI 7 Tablet With Android 4.4
Alcatel arrived at the MWC 2014 with yet another low cost Android tablet, priced at $110 ...
MWC 2014: LG F70 Unveiled With Android 4.4
LG announced the new LTE-enabled Android smartphone, LG F70, at MWC 2014 in Barcelona. ...
   
View All
   
 
Events
 
19th Consumer Electronic Imaging Fair To Be Held On ...

View All
   
   
 
 

home archives contact us advertise with us
           
Magazines Portals Directories Events News Verticals Educational Institute  
Electronics for You
Open Source for You
Facts for You
Electronics Bazaar
electronicsforu.com
efytimes.com
opensourceforu.com
electronicsb2b.com
Electronics Annual Guide
EFY EXPO INDIA
EFY EXPO WEST
ELECTRONICS ROCKS
EFY Awards
OSIDAYS Expo
Electronics
Infotech
Linux & Open Source
Consumer Electronics
Science & Technology
BPO
EFY Techcenter 

Educational Kits
Kitsnspares.com
 
 
© Copyright 2014 EFY Enterprises Pvt. Ltd.
All rights reserved. Reproduction in whole or in part in any form or medium without written permission is prohibited.
Usage of the content from the web site is subject to Terms and Conditions