A PMU-based state estimator for networks containing FACTS devices

Author

Wei Li ; Vanfretti, Luigi

Author_Institution

KTH R. Inst. of Technol., Stockholm, Sweden

fYear

2015

fDate

June 29 2015-July 2 2015

Firstpage

1

Lastpage

6

Abstract

This paper presents a PMU-based state estimation algorithm that considers the presence of flexible AC transmission system (FACTS). The models of FACTS devices, including thyristor- and converter-based devices, are developed and then combined with an AC network model. Considering the characteristics of PMU measurements, the network model for state estimation is separated from the measurements. By applying the nonlinear weighted least squares (WLS) algorithm, a PMU-based state estimator can estimate the states of an AC system and its embedded FACTS devices simultaneously. To validate the algorithm, simulation studies for a 9-bus system are performed.

Keywords

flexible AC transmission systems; least squares approximations; phasor measurement; power convertors; state estimation; thyristor applications; FACTS devices; PMU; converter based device; flexible AC transmission system; nonlinear weighted least square algorithm; phasor measurement unit; state estimation; thyristor based device; Admittance; Logic gates; Power capacitors; Thyristors; Flexible AC transmission system; Phasor measurement units; State estimation;

fLanguage

English

Publisher

ieee

Conference_Titel

PowerTech, 2015 IEEE Eindhoven

Conference_Location

Eindhoven

Type

conf

DOI

10.1109/PTC.2015.7232725

Filename

7232725