Double contingency transmission outages in a generation and reactive power deficient area

Author

Pereira, Les ; DeBerry, Don

Author_Institution

Northern California Power Agency, Roseville, CA, USA

Volume

15

Issue

1

fYear

2000

fDate

2/1/2000 12:00:00 AM

Firstpage

416

Lastpage

420

Abstract

A methodology is described that studies all N-2 outages-instead of selecting specific N-2 double contingency events-and possibly missing some critical ones. Using a power flow program and the capabilities, power and speed of modern computers, a case study was performed for more than 25000 N-2 outages of a 230 kV system in a generation and reactive power deficient area. The data generated by the computer rims was stored in a database program, and reports were generated using different “queries” for analyzing the data. The results of the N-2 outage studies were directly applicable to the analysis and selection of undervoltage relay settings for load shedding. The performance of critical buses for which the power flow simulation diverges was studied with V-Q analysis

Keywords

load shedding; power system analysis computing; power system protection; power transmission faults; reactive power; relay protection; 230 kV; N-2 outages; V-Q analysis; critical buses performance; database program; double contingency transmission outages; generation deficient area; load shedding; power flow program; power flow simulation divergence; reactive power deficient area; undervoltage relay settings; voltage collapse; voltage stability; Circuit stability; Data analysis; Databases; Load flow; Modems; Performance analysis; Power generation; Power system relaying; Reactive power; Voltage;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.852153

Filename

852153