Evaluation of Excitation System Effect on Power Oscillations at Full Load of an 805 MVA Hydrogenerator

Author

Azuaje, C.J. ; Gómez, V.M.

Author_Institution

CVG EDELCA

fYear

2006

fDate

15-18 Aug. 2006

Firstpage

1

Lastpage

6

Abstract

The 805 MVA hydrogenerator of Gun Power Plant had power oscillations under operating conditions at high loading after having substituted its runner to rehabilitation. In order to investigate the origin(s) of such power swings and its solutions the following actions were carried out. In term of hydraulic system, tests with air admission and with a cylindrical extension on the end of runner cone; regarding the generator-power system, frequency response were made for different settings of the automatic voltage regulator (AVR) and power system stabilizer (PSS) with and without the cylindrical extension of cone. This paper presents the effects of automatic voltage regulators and power system stabilizer settings in the solution of a resonant frequency problem involving the hydraulic, mechanical and electrical systems, related to an 805 MVA generator

Keywords

hydroelectric generators; hydroelectric power stations; power system stability; voltage regulators; 850 MVA; Gun Power Plant; automatic voltage regulator; excitation system effect; frequency response; generator-power system; hydraulic system; hydrogenerator; power oscillations; power system stabilizer; Automatic testing; Frequency; IEEE members; Magnetic heads; Power generation; Power systems; Regulators; Resonance; System testing; Voltage; Automatic Voltage Regulator; Frequency Response; Power System Stabilizer; Press Pulsations; Resonance;

fLanguage

English

Publisher

ieee

Conference_Titel

Transmission & Distribution Conference and Exposition: Latin America, 2006. TDC '06. IEEE/PES

Conference_Location

Caracas

Print_ISBN

1-4244-0287-5

Electronic_ISBN

1-4244-0288-3

Type

conf

DOI

10.1109/TDCLA.2006.311606

Filename

4104537