A Simple Scheme for Wide Area Detection of Impending Voltage Instability

Author

Sodhi, Ranjana ; Srivastava, S.C. ; Singh, S.N.

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol., Ropar, India

Volume

3

Issue

2

fYear

2012

fDate

6/1/2012 12:00:00 AM

Firstpage

818

Lastpage

827

Abstract

This paper proposes a synchrophasor-assisted simple scheme suitable for on-line anticipation of the impending long-term voltage instability in the power system. The proposed scheme utilizes the bus voltage magnitude and the consecutive bus voltage deviations in the system. These two criteria are combined by means of their weighted sum, to define a Synchrophasor Based Voltage Instability Monitoring Index (SVIMI). A new algorithm is also developed for updation of the criteria weights. The performance of the proposed scheme is demonstrated on New England (NE) 39-bus system and Northern Regional Power Grid (NRPG) 246-bus Indian system. The test results are also compared with two existing voltage stability monitoring schemes to demonstrate the effectiveness of the proposed method.

Keywords

phasor measurement; power grids; power system stability; New England 39-bus system; Northern regional power grid 246-bus Indian system; SVIMI; bus voltage magnitude; consecutive bus voltage deviations; criteria weights; long-term voltage instability; power system; synchrophasor based voltage instability monitoring index; synchrophasor-assisted simple scheme; voltage instability; voltage stability monitoring schemes; Indexes; Monitoring; Power system stability; Stability criteria; Transient analysis; Voltage measurement; Auto-tuning of weights; monitoring index; phasor measurements; voltage decay; voltage stability; weighted sum;

fLanguage

English

Journal_Title

Smart Grid, IEEE Transactions on

Publisher

ieee

ISSN

1949-3053

Type

jour

DOI

10.1109/TSG.2011.2180936

Filename

6193464