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Anonymous Poster #1

Diesel Power Generator

10/24/2015 12:22 PM

Would the of Diesel Power Generator be reliable without any risk, to power the 415 Volts auxiliaries of a new (Under construction) 300/132KV main intake Substation such as Air-conditioning, Uninterruptable Battery charges, Lighting etc., at least temporary till a 415V permanent power supply from the network is made available i.e., in about 6-Months? All information and views are welcomed ?

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#1

Re: Diesel Power Generator

10/24/2015 12:31 PM

There is always risk - you have to ascertain the amount of risk, minimise it, and see whether it's acceptable when compared with the alteratives/benefits and cost.

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#2

Re: Diesel Power Generator

10/24/2015 12:50 PM
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#3

Re: Diesel Power Generator

10/24/2015 12:57 PM

Only if a reliable source of fuel can be made available!

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#4

Re: Diesel Power Generator

10/24/2015 2:36 PM

What does the project engineer suggest to use? Hopefully that's not you! You should asking him/ her and not an anonymous forum, we're not the one being paid for the job

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#5

Re: Diesel Power Generator

10/24/2015 6:15 PM

The key to reliability is redundancy...and I might add, a qualified staff....

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#6

Re: Diesel Power Generator

10/24/2015 6:26 PM

I respond to ANONS once every 6 months, I'll get back to you

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#7

Re: Diesel Power Generator

10/24/2015 9:26 PM

Nothing in this world is "...reliable without any risk..., except preplanning your funeral arrangements.

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#8

Re: Diesel Power Generator

10/24/2015 10:56 PM

Battery charger donot need generator as storage battery can hold on for some time. if ac donot work for few minutes there is no harm. UPS is needed for protective relays/alarms. Some lights may need emergency generator if emergency lights is not enough.

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#9

Re: Diesel Power Generator

10/25/2015 1:36 AM

DGS are as reliable as the next power source... I use large 1Mva sets in the desert and providing they are maintained properly, then you will have no problems with them.

I suggest you have more than one DGS, as when one is off for maintenance, the other can carry part of the load. You also have to have someone that is Gen Set savvie, so you don't load the set to much.

FYI.... I have installations that ONLY run on DGS, as we have no highline power and these units have been running for several years

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#10

Re: Diesel Power Generator

10/25/2015 2:36 AM

Dear friend,

Since it is a project stage, lot of welding will be involved and pl. ensure no over-load comes on the DG SET. Proper Sizing and Capacity of DG set is one of the Important point.

Pl. ensure load is close to Balanced Load.in all the 3 phases.

Ensure engine maintanance is carried out at correct interval such as changing of oil filters, fuel filter etc.

Use SOLAR powered energy efficient LED LIGHTS during nights which can be used even after commissioning the Sub-Station. Perhaps cost may be high but in the long run - it will prove to be most economical.

DHAYANANDHAN.S

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#11

Re: Diesel Power Generator

10/25/2015 4:09 AM

Nope, you got it all wrong.

You need demand and supply in (KVA or KW) rating. This is called sizing and feeding the demand with usually 125% capacity.

So long as your generator set could handle the demand in (KVA or KW) it's should be okay.

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#12
In reply to #11

Re: Diesel Power Generator

10/25/2015 4:19 AM

Really? We ALL got it wrong?

Enlighten us please.... this should be interesting!

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#13
In reply to #12

Re: Diesel Power Generator

10/25/2015 4:45 AM

Is it "you" or is it "all". You mean to say. I don't know, you are the one reading it.

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#14
In reply to #13

Re: Diesel Power Generator

10/25/2015 5:52 AM

you said..

"Nope, you got it all wrong."

as your post was not address to or in reply to anyone, I assume you were directing your comment to everyone.

If you were addressing your comment to someone, then you either click the reply button on that persons comment or mention that person in your comment that... and in keeping with the forum, and manners mean everything, that 'in your humble opinion' they are wrong. Then you explain why...

As you did neither and still haven't come up with a a valid reason for your comment, one can only assume you directed your comment at everyone.

So who said something that was incorrect in your opinion, and what would be in your humble opinion the correct reply?

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#16
In reply to #14

Re: Diesel Power Generator

10/25/2015 6:49 AM

Is it not the OP I am directing to?

You could be my personal speaker if that's the case.

Perhaps you could do comments for me too?

I'm sorry dear, it's not for you.

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#17
In reply to #16

Re: Diesel Power Generator

10/25/2015 10:27 AM

Is it not the OP I am directing to?

It would seem you are NOT replying to the OP... did you click 'reply' nope! opps how silly of you!
300 plus posts under your belt and you still can't work this forum proper!!

You could be my personal speaker if that's the case.

Perhaps you could do comments for me too?

No you wouldn't want me, I'm to expensive and far to clever for you.. Good try, but no cigar for you today!

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#21
In reply to #17

Re: Diesel Power Generator

10/25/2015 10:52 AM

What can I say...

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#26
In reply to #21

Re: Diesel Power Generator

10/25/2015 9:18 PM

Best?

Nothing!

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#18
In reply to #16

Re: Diesel Power Generator

10/25/2015 10:31 AM

I'll do comments for you.

"Goodbye, I'm off to find another forum to troll".

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#19
In reply to #18

Re: Diesel Power Generator

10/25/2015 10:39 AM

GA from me!!

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#20
In reply to #18

Re: Diesel Power Generator

10/25/2015 10:48 AM

I don't know with you Lyn.

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#22
In reply to #11

Re: Diesel Power Generator

10/25/2015 12:45 PM

Dear Mr.Legolaz,

I am posting this post, thinking that your comment "Nope, you got it all wrong." is addressed or meant to me..

If you read the 1st sentence of my Reply (Vide No.10 above) I have used a word " Proper Sizing and Capacity of DG set is one of the Important point."

The original post does not indicate how much the load demand will be. Hence I used a word " Proper Sizing and Capacity of DG set is one of the Important point."

Some times even 125 % Capacity also may not be sufficient, and you know well capacity selection depends on types of STARTERS and no. of starts per hour etc. You also know that DOL Starter will have more starting current than a star delta starter or soft starter. Hence Sizing of DG set plays a vital role which I have mentioned.

I am eager to to know how from you that how I went wrong which is indicated by you as "Nope, you got it all wrong."

DHAYANANDHAN.S

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#23
In reply to #22

Re: Diesel Power Generator

10/25/2015 1:29 PM

Don't take anything legolaz says personally, he's an idiot. He has taken way to many drugs while he was in his make believe music world. Why the Administrators haven't booted him off is baffling to most of us. As Lyn puts it, "He's a Troll"

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#28
In reply to #23

Re: Diesel Power Generator

10/25/2015 9:42 PM

I might be, but at least I am cute

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#29
In reply to #23

Re: Diesel Power Generator

10/25/2015 9:58 PM

"Never argue with an idiot. They will only bring you down to their level and beat you with experience."

George Carlin

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#30
In reply to #29

Re: Diesel Power Generator

10/25/2015 10:32 PM

It may be time for admin to step in and block him or boot him out, either way he hasn't brought anything constructive to the forum. You said it best, " he's a troll"

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#31
In reply to #30

Re: Diesel Power Generator

10/25/2015 10:49 PM

This thread is finished.

We're not adding anything either any more.

Cheers.

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#27
In reply to #22

Re: Diesel Power Generator

10/25/2015 9:36 PM

I don't know, must be near the tipping point for people.

Well, first thing you would do to reply a post is to read the post (as in this case, AP's post), then you would see at the right bottom part are buttons to click: it says (reply, report) now, if it is not spam then you would click reply as you will.

As in this case, I was clicking the reply at the OP.

Don't take it as for you or for anybody else except the OP, if I was not replying to you, seriously.

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#15

Re: Diesel Power Generator

10/25/2015 6:46 AM

Back up the power generator with a power generator if you will, this reduces the risk.

I guess for 415 Volts you need to define the Amperes as well to make sure you can run everything.

See you later!

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#24

Re: Diesel Power Generator

10/25/2015 2:46 PM

The biggest risk will be the harmonics. The DGS provide you with un clean power. Most of AC equipment manufacturers will not accept to run on DGS power, so you will loose the warranties.

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#25
In reply to #24

Re: Diesel Power Generator

10/25/2015 9:07 PM

Harmonics don't happen just because your using a DGS. Anything that rotates an alternator at constant speed provides clean power. Dirty power comes from having harmonic issues in the load. The best example of that would be using a SCR system to drive a DC motor.

Regular hotel loads would be fine as long as the phases are loaded correctly.

The biggest risk after everything is working correctly will be un-clean fuel and no back-up.

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#34
In reply to #25

Re: Diesel Power Generator

10/26/2015 10:43 PM

"... Anything that rotates an alternator at constant speed provides clean power..." is a common misconception, even an unloaded alternator can produce a distorted waveform, as can one that is supplying only a purely resistive load.

Then there's the natural mechanical distortion/harmonics caused by the cyclical pulsations of the firing of of a reciprocal engine, or a phenomenum known as Subsynchronous Resonance/Torsional Interaction on some turbine driven alternators.

Granted that nonlinear electronic devices contribute the greatest percentage of distortion, but keep in mind that any electrical device that has iron in it is inherently nonlinear due to hysteresis, especially when it is operating near or above its design rating.

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#35
In reply to #25

Re: Diesel Power Generator

10/27/2015 1:32 AM

"Regular hotel loads would be fine as ......." Huh? Where did the OP mention any hotel loads? I could have sworn about a sub station under construction. "......to power the 415 Volts auxiliaries of a new (Under construction) 300/132KV main intake Substation......."

Maybe I missed something?

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#36
In reply to #35

Re: Diesel Power Generator

10/27/2015 3:24 PM

No, you didn't miss something; I just used a slang term. My apologies. "Hotel loads" refers to the auxiliary loads, air conditioning, lights, etc; support power for the substation vice anything to do with the distribution of power.

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#37
In reply to #36

Re: Diesel Power Generator

10/27/2015 8:30 PM

No problem, Their in over their head if they're here asking if a DG set is suffice to run the "hotel loads" and hoping it's not the project engineer asking an anonymous forum if a "Diesel Power Generator" can handle the loads.

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#32

Re: Diesel Power Generator

10/25/2015 11:15 PM

38 votes for off topic in one thread. someone may as well add me in to the tally, I've marked this post off topic myself.

I take six months off, come back to find the place has gone to the dogs.

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#33
In reply to #32

Re: Diesel Power Generator

10/26/2015 9:54 AM

You take 6 months off and then post as an Anonymous Poster? Really?

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#38

Re: Diesel Power Generator

11/09/2015 11:14 PM

Sizing based on load is important.Risk is always there in any equipment

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#39

Re: Diesel Power Generator

12/14/2015 6:50 AM

Yes diesel power generator will be reliable power source if you have sufficient storage and availability of diesel for 6 months. But diesel generators need maintenancce very frequently so down time will be more and alternative source has to be maintained in case of outage.

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