Measurement of transmission line resistance
Measurement of transmission line resistance
(OP)
Hi everybody
Good morning
Does any body have idea about the variation of transmission line resistance. What is the acceptable range of values of transmission line resistance. How can we measure the transmission line resistance ?
Please suggest me if there is any literature
regards
simatic7
Good morning
Does any body have idea about the variation of transmission line resistance. What is the acceptable range of values of transmission line resistance. How can we measure the transmission line resistance ?
Please suggest me if there is any literature
regards
simatic7






RE: Measurement of transmission line resistance
RE: Measurement of transmission line resistance
However, the impedance is more important. This depends on configuration, spacing, length, frequency, and the resulting voltage drop also depends on the power factor of the load.
An important factor in allowable impedance is the range of voltage correction available by the On Load Tap Changer at the receiving transformer. One factor is the voltage drop in the line, try to avoid situations where the voltage drop exceeds the capacity of the OLTC to correct it. This limit may be exceeded from time to time for a variety of reasons.
Bill
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"Why not the best?"
Jimmy Carter
RE: Measurement of transmission line resistance
RE: Measurement of transmission line resistance
But, as stated in IEEE-80, the maximum no.of parallel line which will be taken into consideration is 2. It is not an accurate method but is good enough.
There are a lot of other publication indicate different method. See for instance:
http://iee
"Computation of current-division factors and assessment of earth-grid safety at 161/69 kV indoor-type and outdoor-type substations" by Lee, C.-H. Chang, C.-N.
This paper appears in: Generation, Transmission and Distribution, IEE Proceedings-Publication Date: 4 Nov. 2005 Volume: 152, Issue: 6 on page(s): 837- 848
RE: Measurement of transmission line resistance
Simatic7
RE: Measurement of transmission line resistance
Measurement is usually by the fall-of-potential method. See IEEE Std 81-1983, IEEE guide for measuring earth resistivity, ground impedance, and earth surface potentials of a ground system