Accurate ampacity determination: temperature-sag model for operational real time ratings

Author

Seppa, Tapani O.

Author_Institution

The alley Group, Ridgefield, CT, USA

Volume

10

Issue

3

fYear

1995

fDate

7/1/1995 12:00:00 AM

Firstpage

1460

Lastpage

1470

Abstract

This report presents a method for determining transmission line ratings based on the relationship between the conductor´s temperature and its sag. The method is based on the ruling span principle and the use of transmission line tension monitoring systems. The report also presents a method of accurately calibrating the final sag of the conductor and determining the actual-ruling span length of the line sections between deadend structures. Main error sources for two other real time rating methods are also examined

Keywords

overhead line mechanical characteristics; power cables; power overhead lines; power system measurement; power transmission lines; thermal analysis; ampacity determination; calibration; conductor sag; conductor temperature; dead-end structures; error sources; power transmission line ratings; real time rating methods; ruling span principle; tension monitoring systems; Atmosphere; Atmospheric measurements; Conductors; Monitoring; Power transmission lines; Temperature measurement; Temperature sensors; Transmission line theory; Transmission lines; Wind;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.400930

Filename

400930