Representation of single-pole open conditions in stability studies [of power systems]

Author

Atmuri, S. Rao ; Malone, L.R. ; Burtnyk, V.

Author_Institution

Teshmont Consultants Inc., Winnipeg, Man., Canada

Volume

6

Issue

1

fYear

1991

fDate

2/1/1991 12:00:00 AM

Firstpage

9

Lastpage

15

Abstract

The general practice in representing a power transmission line with one phase open in stability studies is to assume that the phase is open at one end only. The error involved in such a representation, especially at EHV voltages with a long line section that is not fully compensated, can be appreciable. It is shown that to represent the effect of single phase open conditions in stability studies accurately the equivalent line parameters should be calculated by considering the line to be open at both ends instead of at one end only. The exact method of representing the phase open condition in positive-sequence network simulations in stability studies is derived. A method of calculating the two-port parameters, as seen from the two openings, given the four-port parameters with ground as a return node, is derived

Keywords

electrical faults; equivalent circuits; power system analysis computing; power transmission lines; stability; EHV; electrical faults; equivalent line parameters; four-port; ground; phase; positive-sequence network simulations; power system analysis computing; power transmission line; return node; single-pole open conditions; stability; two-port; Capacitance; Circuits; Computer networks; Impedance; Joining processes; Large-scale systems; Power system faults; Power system stability; Power transmission lines; Voltage;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.131041

Filename

131041