Sensitivity of transfer capability margins with a fast formula

Author

Greene, Scott ; Dobson, Ian ; Alvarado, Fernando L.

Author_Institution

L. R. Christensen Associates, Madison, WI, USA

Volume

17

Issue

1

fYear

2002

fDate

2/1/2002 12:00:00 AM

Firstpage

34

Lastpage

40

Abstract

Bulk power transfers in electric power systems are limited by transmission network security. Transfer capability measures the maximum power transfer permissible under certain assumptions. Once a transfer capability has been computed for one set of assumptions, it is useful to quickly estimate the effect on the transfer capability of modifying those assumptions. This paper presents a computationally efficient formula for the first order sensitivity of the transfer capability with respect to the variation of any parameters. The sensitivity formula is very fast to evaluate. The approach is consistent with the current industrial practice of using DC load flow models and significantly generalizes that practice to more detailed AC power system models that include voltage and reive power limits. The computation is illustrated and tested on a 3357 bus power system

Keywords

load flow; power system analysis computing; power system interconnection; power system security; sensitivity analysis; transmission network calculations; DC load flow models; bulk power transfers; computer simulation; first order sensitivity; maximum power transfer; parameters variation; reactive power limits; sensitivity formula; transfer capability margins sensitivity; transmission network security; voltage limits; Industrial power systems; Load flow; Power engineering computing; Power system analysis computing; Power system modeling; Power system planning; Power system reliability; Power system security; Power systems; Voltage;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/59.982190

Filename

982190