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now blogging at sandeep.techonaut.com

i have started blogging at my self hosted blog which is at http://sandeep.techonaut.com

Bye.

suggest a good name for our blog

hey guys i am happy to tell that we are launching technology blog in this july so plz suggest a good domain  name for it.we have selected some names kindly vote.if u want to suggest us a new name which is not in the list click others and add ur name

the blog is about the technology news hacks and more just like our existing blog digital tracker

we have considered following aspects in choosing the name

• small length
• not confusing
• related to technology or web
• it should be like brand name
• in future if we host other blogs with diffrent topics it should not conflict like cars.blogname.com

what i am doing these days

I think its been long time i have written any post. actually now i am in my fourth year of my engineering, so I was busy with my project work on optimal power flow. apart form that I was learning about blogospher these days. i am reading these blogs labnol techcrunch and lifehacker etc and updating my self with the tech buzz out there. and I started using google reader. the other things that was making me busy was my college web site, which i was building using wordpress and drupal can check it out there http://atri.edu.in

comming up! “hyderabadi hover craft”

the shaastra fever is in the city with excellent publicity stratigies from staastra team we can see lot pf students gearing up with there bot for shaastra this how i got to work for this hover craft

student attendance calculator

Actually in my college i.e aurora technological research Institute attendance is taken very seriously as per JNTU norms they follow a rule that every student should have minimum of 75% attendance so every years we find a good number of students getting detained because of attendance problem, so one of our collegemate Syed Junaid have developed an application using ms excel i.e universal student attendance calculator that’s how he names it but i think i would be better if we call it as student attendance management system. very soon you will know why ?

These are the some of the features of the application:

calculates your attendance percentages (that’s obvious), and you can specify your own Time tables with no of classes there names etc etc hoildays, if you just give input to it for a week it will generate for the rest of the year considering weekends as holidays which is the case in our college, but the thing that you need to update it regularly every day with your attendance but if you miss some ware then don’t worry it has a provision to take attendance value from a particular date and start from there these value can be taken from the our college office or they will be displayed on notice board every month. the one feature which is really interesting and usefull is that it extrapolates our attendance that is if u say at your going to absent for next 2 days to the program then it will calculate the attendance till the end assuming you are present for remaining all days the then will check if it is less that 75 if so then it warns you if not then it will give the crucial days that you should not miss to college whole lot of other futures also included, just have a try at it , i recommend all ATRI students to use it,

you can download it here :

Windows Xp Professional Version To Download Click here

Windows Vista Version (BETA) To download Click here Ms Office 2007 Requried

form Tools Review

http://www.formtools.org/

form tools one of the very use full utility for web developers. It is php script to handle all website form related things like feedback form contact form etc . This script works with any kind of form it collects data from the form and stores on the database mysql. and absolutely on knowledge of php or mysql is required to use this software only u just need to have some idea about html

this application has very good user interface. just upload all the download files in to your web hosting server and just click on the index.php thats it it will guide you to the installation procedure. after installation it looks some thing like this here is the demo you have two types of access to it one admin and other is client. see the demos to find what prevalages does each one have. there is also very good documentation for the tool.

I have use this tool for one of my college technical events websites cynosure 2007 i have used it for all forms in the web site it has no limit on the number of forms. You can use it for as many forms as you can if you are running some commerce site it seems this tool can integrate with online credit card payment processing software. this software gives results in to types of format one is ms excel and other is Printer-friendly format.this tool has many features like form validation email conformation email notification to the admin and clients

like phpbb for forums and wordpress for blogs i can say we have form tools for forms this software really works well

My rating is 4 out of 5.

I am a victim of wilfing

    wilfing is new internet phenomena the symptom are like this, if u suddenly lose your train of thought while searching the net and jump from one website to other that catches your attention then chances are that you are what experts have termed ‘wilfer’. wilf – a rough acronym of What Was I Looking For?

The effects of wlifing are it can affect productivity in the workplace and relationships at home.and one good news is that wilfing is a habit people tend to grow out of. Internet users aged 55 or over were three times less likely to wilf than those aged under .

knowing that we are wlifing, now Stopping ourself from wilfing takes a mixture of planning and willpower.

read full article here : click

PSAT – electrical gizmo

    psat — The Power System Analysis Toolbox (PSAT) is a Matlab toolbox for electric power system analysis and simulation it is developed by Dr. Fedrico Milano. its an open source project developed in matlab

the main features of psat are :

• Power Flow;
• Continuation Power Flow; Optimal Power Flow;
• Small Signal Stability Analysis; Time Domain Simulation; Phasor Measurement Unit (PMU) Placement; Complete Graphical User Interface; User Defined Models; FACTS Models; Wind Turbine Models; Conversion of Data Files from several Formats;
• Interfaces to GAMS and UWPFLOW Programs;
• Command Line Usage; and GNU Octave Compatibility.

the most use full features of PSAT a power flow and optimal power flows. we can have user defined models .its has a very good GUI interface . one unique feature is that simulink based library provides an user friendly tool for network design,and analyze under PSAT.

software like distribution planning,network reconfiguration can be developed using this tool box. Some of us can work them out.

Other open source software like MATPOWER , are available with limited features. if u find more open source software in electric engg plz post here.

Indian electrical Distribution systems

Indian DS

    recently i have spent some time studying about Indian distribution systems (A paper by m v krishna rao and radha krishna) I came to cognizant of how poor is India in power sector especially the quality of power supply to rural India. India is facing power losses as high as 25% the major contribution to these losses are from distribution system. most of the Indian DS is on low voltage ie 220 AC ph to gn (3 ph 4 wire system)

Reasons for such a heavy losses in DS

they mainly due to heavy loading for feeders and improper reactive power compensation. As India power demand is increasing at a very high rate as 10% every year so it is unable to meet its power requirement as a remedy the rural India is given power based on no of hours for eg: in Andhra Pradesh rural people will get 8 hr of power supply per day because of this there will be heavy loading on the feeders during this time because all the pump sets will be working at this particular 8 hr of time in that region this leads to heavy I ² R losses. most of the pump sets used for the agriculture purpose r 3ph ac motors generally with low quality this is the main cause for the low power factor on the DS 3ph ac motor is having pf of around 0.5 so this will make a lot of reactive power to swing in the DS which creates lot of power losses and most of the times this is main cause of failures of distribution transformers in rural areas of India. typical DS in rural India is mainly radial type and as the losses r more some time the end user on the particular feeder gets around 7% of the rated supply aftermath there will a loss of his utilities like burning of motors fridges etc. and not the forget the little culprit that is unsymmetrical currents which leads to the flow of current in the neutral wire so extra (I₁-I₂-I₃)*0.5R losses.

Suggestions

As suggested in the paper some of the measures like proper reactive compensation using capacitor banks, placing voltage booster, and network reconfiguration are normally done but the tough job is to effetely placing of these things on a DS that can be decided based on the some calculation considering load flows, demand forecasting and economic factors which essentially requires a very good software (GECE is currently working on this). conversion of existing LVDT to HVDT is inevitable for loss reduction

I feel the work needs to be done more on alternate sources for energy like solar energy for distributed power generation as India has many sunny days expessely peak power demands in summer can be met using this technology. and development of single phase ac motor with good PF should be used for agriculture loads below 5hp loads government should give subsidy on such motors. drip irrigation should be encouraged . and most important is loads management using some distribution management systems software. for avoiding heavy loading and balancing unsymmetrical loads

……………………………….

finally this year our president commence on to reduce afflicts of Indian power systems read full article here : HINDU NEWS PAPER

NEW DELHI, AUG. 24. Expressing concern over mounting transmission and distribution (T&D) losses in the power sector, the President, A. P. J. Abdul Kalam, today asked the Union Power Ministry to bring down these losses from 31,000 MW to 12,000 MW within the next three years. The President pointed out that in developed countries, the T&D losses were only 12,000 MW, which meant India was losing an additional 19,000 MW, compared to the developed world.