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sash46
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Join Date: Jun 2011
Location: India
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Distribution of Construction Power on OHL

06/13/2011 8:16 AM

20 MW power has to be distributed throughout the project location. It is proposed to have 33kV over head lines to serve this purposes as the loads distances are 3 Km away from the generating source. The power is supplied by DG sets. Now i need to design the 33kV overhead line for the successful distribution of this constructional power from the DG house to the loads. I appreciate any help in this regard thank you.

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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#1

Re: Distribution of construction power on OHL

06/13/2011 8:21 AM

It would be inappropriate to tackle such a task without having received a locally-satisfactory level of training. To request such training and advice via a global internet forum with anonymous subscribers is preposterous. Apply for training within the organisation that has generated the task.

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sash46
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#2
In reply to #1

Re: Distribution of construction power on OHL

06/14/2011 12:25 AM

I just want to have discussion over that. The preliminary training has been given to me and the initial design is also made. Now deciding the transmission is the present task.

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PWSlack
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#3
In reply to #2

Re: Distribution of construction power on OHL

06/14/2011 3:49 AM

Then hire someone who can do the work.

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sash46
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#4
In reply to #3

Re: Distribution of construction power on OHL

06/14/2011 4:02 AM

I just want to have discussion over that. The preliminary training has been given to me and the initial design is also made. Now deciding the transmission is the present task.

Thank You.

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electricalexpert65
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#5
In reply to #4

Re: Distribution of construction power on OHL

06/14/2011 5:20 AM

Calculate the current to be transmitted; find from a good overhead line (ACSR) catalogue, which is the nearest size conductor for your purpose; have the requisite inter-phase & phase-to-earth clearances, calculate sag, decide on the span of the OH line supports, calculate voltage drop, follow local regulations regarding transmission thro OH lines.
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Happy singh
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#7
In reply to #4

Re: Distribution of construction power on OHL

06/14/2011 8:38 AM

Dear sash46,

If you wish to start discussion, all interested to participate should be convinced that it is serious one.

Will you mind sharing your preliminary design detail for 33KV, 20 MW line you made.

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sash46
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Join Date: Jun 2011
Location: India
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#8
In reply to #7

Re: Distribution of construction power on OHL

06/14/2011 9:06 AM

Thank you. But i fear i may not share those as it is the company's property and i need to take permission of my superiors.

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sash46
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#9
In reply to #7

Re: Distribution of construction power on OHL

06/14/2011 9:07 AM

Btw could you please tell me what all are required.

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sash46
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#6

Re: Distribution of Construction Power on OHL

06/14/2011 5:49 AM

Thank you electricalexpert65

My main doubts are

1.Does the transmission line guidelines of EHV be applied to this?

2.How to decide the span?

3.I am getting weird results in the sag calculations.(the area is hilly terrain and has inclined span major of the time).

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electricalexpert65 (1); Happy singh (1); PWSlack (2); sash46 (5)

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