By Topic

On-Line transmission line zero sequence impedance estimation using Phasor Measurement Units

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
H. Kazemi Karegar ; Faculty of Electrical and Computer Engineering, Shahid Beheshti University(SBU), Tehran, Iran ; B. Alinejad

This Paper proposes a new algorithm for estimating the zero sequence impedance of a live transmission line by means of Phasor Measurement Units (PMU). In this algorithm the line impedance matrix is calculated and its sequence impedance matrix calculates by means of symmetrical components matrix. A case study contains a 230kv single circuit un-transposed transmission line was simulated and results are demonstrated. One of the main advantages of this algorithm is the ability of estimating the parameters in live or on-line condition which enables the system operators and adaptive protection systems to update their parameters online without needs to disconnect or short circuit the line. Results show the algorithm capability in estimating the short and medium transmission lines zero and positive sequence impedances. In a long transmission line the estimation error increases but limited to smaller than 20% of the real value.

Published in:

Universities Power Engineering Conference (AUPEC), 2012 22nd Australasian

Date of Conference:

26-29 Sept. 2012