Charge-Voltage curves of surge corona on transmission lines: two measurement methods

This paper investigates the charge versus voltage (q-v) curves of surge corona on transmission lines. Two measurement methods of the q-v curves are proposed, and field test results are shown to validate the methods. Since the new methods do not require a charge-measuring conductor, such as a corona...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on power delivery 2003-01, Vol.18 (1), p.307-314
Main Authors: Noda, T., Takao Ono, Matsubara, H., Motoyama, H., Sekioka, S., Ametani, A.
Format: Article
Language:English
Subjects:
Capacitors
Conductors
Corona
Coronas
Current measurement
Electric potential
Mathematical models
Measurement methods
Power transmission lines
Space charge
Studies
Surges
Transmission line measurements
Transmission line theory
Transmission lines
Voltage
Waveforms
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:This paper investigates the charge versus voltage (q-v) curves of surge corona on transmission lines. Two measurement methods of the q-v curves are proposed, and field test results are shown to validate the methods. Since the new methods do not require a charge-measuring conductor, such as a corona cage, the q-v curves are measured in the real electric-field distribution. One of the methods obtains the amount of charges q by numerically integrating the digitally stored waveform of injected current, assuming that the line is short in length and open ended. Thus, it is suitable for measurement using an experimental setup. The other calculates q from voltage and current waveforms based on the traveling-wave theory, assuming that the line is long enough to expect no reflected waves, and it is applicable to existing "real" transmission lines. Measured q-v curves are compared with simulated ones, and their physical properties are discussed in the paper.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2002.806684