Tata Projects Ltd. gets $120m order for power transmission project in Bangladesh

[SMX 3.0]

India has really been trying to limit its dependence on Chinese extra high voltage equipment and hopefully these western companies (Siemens + ABB) can really help you.

There are Indian suppliers who supply UHVAC/UHVDC equipment nowadays. Also both Siemens and ABB does manufacture in India.

 

[TOTUU]

There are Indian suppliers who supply UHVAC/UHVDC equipment nowadays. Also both Siemens and ABB does manufacture in India.

Yes, India has made progress in this area.... Not only are Western companies producing in India, but Chinese companies are providing the same in their factories in India . Chinese companies are now subject to significant restrictions and boycotts in India.

 

[SMX 3.0]

Yes, India has made progress in this area.... Not only are Western companies producing in India, but Chinese companies are providing the same in their factories in India . Chinese companies are now subject to significant restrictions and boycotts in India.

I will try posting more about the same in the India developing thread.

 

[TOTUU]

I will try posting more about the same in the India developing thread.

Well. More work and less bragging will lead to progress .

 

[SMX 3.0]

Well. More work and less bragging will lead to progress .

Do check out the thread, I am thinking more about contributing there when I have time.

 

[TOTUU]

Do check out the thread, I am thinking more about contributing there when I have time.

Okay, thanks for your contribution, I'll check it out now

 

[SMX 3.0]

That is a research and test scenario. It is not a production scenario.

World's highest my foot.

Butt hurt about India operationalizing a 1200 kv line ?? It's online ever since 2016 you dummy, and is presently the world's highest.

India has multiple 800 kV UHVDC & 765 kV UHVAC lines in operation. Not that we need to prove this to a country with ZERO engineering capabilities.

Ahammuks and murkhs everywhere

Talking about your 2 USPTO patents an year LDC??

Yeah that explains...

A country that cannot even produce good quality mini circuit breakers for home use, is boasting about 1200 KV transmission.

CRY...

Meanwhile the Zero-engineering-capability nation boasts about exporting 20 MVA distribution transformers worth 4 crore INR to Adani..

 

[Bilal9]

Butt hurt about India operationalizing a 1200 kv line ?? It's online ever since 2016 you dummy, and is presently the world's highest.

India has multiple 800 kV UHVDC & 765 kV UHVAC lines in operation. Not that we need to prove this to a country with ZERO engineering capabilities.



Talking about your 2 USPTO patents an year LDC??

Yeah that explains...



CRY...

View attachment 794745

Meanwhile the Zero-engineering-capability nation boasts about exporting 20 MVA distribution transformers worth 4 crore INR to Adani..

Oh Kumar - there you go again, begging for attention to the 3rd largest source of remittance for your bankrupt nation....and maybe to one of the few places in the globe that pities you by buying your garbage products.

World's largest $hithole with low-grade-infra all around (as usual with a few cases just for show or on test basis), trying to prove something (anything!) superior to Bangladesh, just so you can cope.

We all know about your pathetic situation, which is many times worse than Bangladesh, third rate hellhole as it is (almost all Bangladeshis have been there, we know). We help your economy with the largest groups of tourists and look at your filthy attitude. The world can see who you Sanghis are. Bunch of under-educated dehati village morons.

I guess ignoring pictures of your own road $hitters and filth makes you sleep at night. Reality at home is just too much to take for your ilk, so you have to publicize the few bright spots, resorting to lies and trumpeting from rooftops. Ignore 98% of the reality around you and take solace from it. Suit yourself.

Do you even realize that when the best companies from India (Tata, L&T) work on contracts in Bangladesh, the media and govt. keep it super quiet?

Do you get the idea, "why" Kumar? Some reputation of tek-na-lajee.

We put up with these subpar Indian contractors and their services because not everyone in India is a Sanghi, and those decent Indians have to eat as well. Our pity is the only reason you can sell to us, not superior Sanghi vedic tech.

Don't worry about the stage of Bangladesh' transformer technology, If we can supply our own infra with whatever we produce, that's all we care about.

And yes we have friends in the electrical engg. profession. No electrical engineer worth their reputation in Bangladesh will touch electrical transformers (or any heavy electrical product for that matter) from India with a ten foot pole, pieces of $hit will burn up pre-maturely, or worse, explode with fatalities. No Thanks Kumar.

Part of the reason why customers in India (the heavy electrical juggernaut of the WORLD ! ) keeps buying Bangladeshi Transformers (small or large).

Don't make me post pictures and articles from your own media.

As if India "day-way-lupped" heavy electrical tek-na-lajee from Vedic sutras and didn't need ABB and Schneider electric to hand-hold their scrawny butts through basic ToT, starting in the early 50's. Center of heavy electrical tek-na-lajee, mera Sanghi-land mahaan !!

Keep blabbering, quite a show.

 

[Bilal9]

^^^

@Atlas and @bluesky bhais look at this village troll's attitude to a "bandha customer", I suggest we mobilize public opinion further to reduce all Indian heavy electrical services and goods imports to a bare minimum and substitute them with goods imports and services from China, Turkey, Indonesia and other countries. These latter countries at least won't call us names and will appreciate the business we give them.

For example GE and Schneider electric both have very large plants in Turkey (Gebze area), as does Indonesia. We don't have to buy from India anymore. Not with this attitude.

I know plenty of people in the business chambers and their attitude about these Sanghis are well-known.

No more business with these ullu village gadha 4th world chest-beater Sanghis.

 

[bluesky]

^^^

@Atlas and @bluesky bhais look at this village troll's attitude to a "bandha customer", I suggest we mobilize public opinion further to reduce all Indian heavy electrical services and goods imports to a bare minimum and substitute them with goods imports and services from China, Turkey, Indonesia and other countries. These latter countries at least won't call us names and will appreciate the business we give them.

For example GE and Schneider electric both have very large plants in Turkey (Gebze area), as does Indonesia. We don't have to buy from India anymore. Not with this attitude.

I know plenty of people in the business chambers and their attitude about these Sanghis are well-known.

No more business with these ullu village gadha 4th world chest-beater Sanghis.

I sometimes open some sensitive threads in order to discuss BD domestic issues among ourselves. Then some troll Indians answer to derail the thread. I avoid answering them because they get more opportunity to bash BD and they send more troll posts.

It is better not to answer any of their troll posts. Please note that I have not even mentioned this troll's name here because it will give him opportunity to answer my post just for the fun of trolling.

 

[VikingRaider]

It is better not to answer any of their troll posts.
Please note that I have not even mentioned this troll's name here because it will give him opportunity to answer my post just for the fun of trolling.

Very well said. I would rather feed a dirty swine with my own hand ( yaak!), than feeding some low class trolls!

 

[bluesky]

I was talking about this type of software @bluesky bhai,

TOWER — Power Line Systems

www.powerlinesystems.com

About Stress Analysis, a design engineer can do both by hand calculations and by graphical method. Now, this latter method has been used to develop the computation to be done by computer software (not CAD).

The design engineer thus CALCULATES the STRESS due to loading inflicted on each vertical and horizontal Chord/ member. But it is neither the beginning nor the end.

The loads are calculated purely by hand. The fundamental one is the vertical Dead Load (1) of the vertical and lattice members and the weight of thirty plus hanging cables. The 2nd one is the Wind Load (2) during storm. All the cables seems to be thin but too much lateral loads are exerted upon them during a cyclone, say at 150 kph. The 3rd one is the Seismic Load (3).

The 2nd and 3rd are compared and the larger one is used to do the stress analysis of each of the vertical truss members INDIVIDUALLY. It can be done by hand calculation, graphical method and by computer with the use of specialized software (not CAD). CAD is only a drafting implement.

Once done, the largest stress on the main four vertical members and lattice members is used to DECIDE the size of main and lattice members separately. It is done by hand calculator and not by computer.

Previously, all these works were done by hand, pencil, calculator, and graph paper by the design engineer. I believe that engineers who are used to the use of the manual method are better than engineers who know only how to use computer software for stress calculation.

Since it will be too long to write, I avoided other factors such as when a pylon is located in a corner. It is more difficult to analyze because even without wind loads the dead load of the cable strands on both sides will try to tilt it in the front.

There can also be the case when due to heavy wind, cables on one side of the tower are completely torn down. Note that with cables at both sides the tower is stable. But, one side is torn, the cable on the other side will pull the tower and will cause it to fall down.

It is impossible to say many other related difficult things to say in half a page. But, all these are all considered by a design engineer and so it is not that EASY (that you have assumed in your post) for anybody to design a tower.

I have avoided also saying anything about the design of piled foundation or the four pedestals.

 

[Bilal9]

About Stress Analysis, a design engineer can do both by hand calculations and by graphical method. Now, this latter method has been used to develop the computation to be done by computer software (not CAD).

The design engineer thus CALCULATES the STRESS due to loading inflicted on each vertical and horizontal Chord/ member. But it is neither the beginning nor the end.

The loads are calculated purely by hand. The fundamental one is the vertical Dead Load (1) of the vertical and lattice members and the weight of thirty plus hanging cables. The 2nd one is the Wind Load (2) during storm. All the cables seems to be thin but too much lateral loads are exerted upon them during a cyclone, say at 150 kph. The 3rd one is the Seismic Load (3).

The 2nd and 3rd are compared and the larger one is used to do the stress analysis of each of the vertical truss members INDIVIDUALLY. It can be done by hand calculation, graphical method and by computer with the use of specialized software (not CAD). CAD is only a drafting implement.

Once done, the largest stress on the main four vertical members and lattice members is used to DECIDE the size of main and lattice members separately. It is done by hand calculator and not by computer.

Previously, all these works were done by hand, pencil, calculator, and graph paper by the design engineer. I believe that engineers who are used to the use of the manual method are better than engineers who know only how to use computer software for stress calculation.

Since it will be too long to write, I avoided other factors such as when a pylon is located in a corner. It is more difficult to analyze because even without wind loads the dead load of the cable strands on both sides will try to tilt it in the front.

There can also be the case when due to heavy wind, cables on one side of the tower are completely torn down. Note that with cables at both sides the tower is stable. But, one side is torn, the cable on the other side will pull the tower and will cause it to fall down.

It is impossible to say many other related difficult things to say in half a page. But, all these are all considered by a design engineer and so it is not that EASY (that you have assumed in your post) for anybody to design a tower.

I have avoided also saying anything about the design of piled foundation or the four pedestals.

You are right @bluesky bhai, CAD is only for drafting.

I talked about Fast Fourier Transform and Finite Element Analysis only because I had a friend in a college PhD program who used these methods to test the stress and resulting deformation (dynamic bending moment) on structures like airplane wings (B787). Those usually are done on a computer by calculating the structural stress coefficient of metallic and GFRP materials and the resulting bending moments modeled by the application itself from those factors. Probably does not apply to lattice structure design like you said, which is calculated by much simpler methods.

In any case - appreciate your knowledgeable input.

 

[bluesky]

You are right @bluesky bhai, CAD is only for drafting.

I talked about Fast Fourier Transform and Finite Element Analysis only because I had a friend in a college PhD program who used these methods to test the stress and resulting deformation (dynamic bending moment) on structures like airplane wings (B787). Those usually are done on a computer by calculating the structural stress coefficient of metallic and GFRP materials and the resulting bending moments modeled by the application itself from those factors. Probably does not apply to lattice structure design like you said, which is calculated by much simpler methods.

In any case - appreciate your knowledgeable input.

Thanks. I have no knowledge about airplane stress calculations. But I am sure the dynamic loads are calculated by hand from the data provided to a designer, and he uses this data to test the shape/ size of his plane.

In case of transmission tower I do not think CAD has any function other than drafting the drawings and inputting the sizes of members.

A transmission tower is essentially like a TRUSS BRIDGE with many vertical, horizontal and transverse steel chords/ members that together withstand the destabilizing forces except that the wind load is the main force for a tower.

In the case of a truss bridge, the main loads are DL plus WL and/ or seismic loads that try to break down the steel members. It is not exactly the same with transmission towers. The lateral loads try to bend or break the steel chords.

And the design engineers first decide by hand calculations the magnitude of these loads, and then do design analysis by computer to know the stress on any steel member. He will then calculate by hand the sizes of the members/ chords able to withstand the imposed loads.

The tower foundation is typically a piled one, a pile cap over it bonded together by steel bars from the piles. The pile cap has four Pedestals on top of which the vertical main (L) angles are secured with a set of Anchor bolts embedded into the pedestals.

Below is a picture of an anchor bolt fixed to a pedestal. Contrary to this picture, the anchor bolts for a transmission tower is quite long with large diameter. Hence, the pedestals are quite tall and sturdy with heavy renforcements from the pile caps.

The foce of horizontal wind pressure is too large and therefore the A. bolt dia and length are calculated by the civil design engineers in a way that will withstand the heavy tension/ pulling force exerted by the wind.