Transmission Line: 300km vs 150km

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Discussion Overview

The discussion revolves around the differences between transmission lines of 300 km and 150 km in length, focusing on characteristics such as line loss, impedance, and other electrical factors. Participants explore various aspects of transmission line performance and implications of length on these characteristics.

Discussion Character

  • Debate/contested
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant inquires about the differences between 300 km and 150 km transmission lines, seeking clarification on specific characteristics.
  • Another participant suggests that line loss, voltage, and other factors are critical in understanding transmission line performance, indicating that practical limits exist for line length.
  • A participant emphasizes that the main difference is increased line loss and maintenance costs, while also noting that line length affects resistance and impedance.
  • One participant challenges the relevance of line loss in the original question, suggesting that if line loss is excluded, there is no significant difference between the two line lengths.
  • Humor is introduced in the discussion, with a participant playfully stating that the difference in context is simply 150 km.

Areas of Agreement / Disagreement

Participants express differing views on the relevance of line loss and other electrical characteristics in determining the differences between the two transmission line lengths. The discussion remains unresolved, with no consensus on the primary factors to consider.

Contextual Notes

Participants have not agreed on the importance of line loss, impedance, or resistance in the context of the original question. The discussion reflects varying assumptions about what constitutes a meaningful comparison between the two line lengths.

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.
[/story]
 
Last edited:
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?
 
Last edited:
since you don't want to consider the electrical differences

the difference in this context is 150 km :-pDave
 

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