Transmission Line: 300km vs 150km

AI Thread Summary
The discussion centers on the differences between 300km and 150km transmission lines, primarily focusing on line loss and maintenance costs. Participants emphasize that line length significantly impacts resistance and impedance, which are critical factors in transmission efficiency. While one user notes that increased distance leads to greater line loss, others argue that without considering these electrical characteristics, there is essentially no difference between the two lengths. The conversation also touches on the historical context of long transmission lines, referencing the Rio Grande Electric Cooperative's challenges. Ultimately, the key takeaway is that line length affects performance, but the specifics of the inquiry need clarification for a more detailed response.
onceinalifetim
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Hello

i would like to know what is the different between 300km and 150km in transmission line..
thanks
 
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What kind of characteristics are you asking about? Line loss? There is a practical limit to the length of a transmission line, substations and ties affect transmission lines as well.

Could you please be a lot more specific? example: How many Kv? What are you trying to learn about?
This will help you to think about what you want to ask:
http://en.wikipedia.org/wiki/Electric_power_transmission

[story]
As a side note: Rio Grande Electric Cooperative has the single longest transmission line in the US (As of 1995).
It was nicknamed 'Old Leaky'. If I remember correctly, it had line losses on the order of 15%. Rio Grande, to my knowledge, has never done well financially. I think the line has something to do with it. With the measurement of customers per mile of line, it was also awful - about .5 customer meters per mile. Most meters were lumped in a few small developments in the Big Bend Park.
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okay...

I'm not asking for line loss, I'm asking like what is the main different between both of the lines..
380v...
 
None, except increased line loss and side effects like cost of maintenance. Line loss is a function of distance, AC vs DC, conductor types, coronal loss, voltage, etc. Line length(resistance / impedance) is the primary factor after AC/DC and voltage.

So, your question, as asked, makes little sense to me. Unless you are referring to impedance or resistance...

Since you refuse to consider line loss (impedance/resistance, etc), the answer is: no difference.

Is this a homework question of some sort?
 
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since you don't want to consider the electrical differences

the difference in this context is 150 km :-pDave
 
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