Study on a real case of low frequency oscillation occurred in the black-start by a hydropower plant

Author

Yang, Bo ; Jiang, Jing ; Yu, Tao ; Jiang, Jinliang

Author_Institution

Dept. of Electr. Power, South China Univ. of Technol., Guangzhou, China

fYear

2011

fDate

6-9 July 2011

Firstpage

1445

Lastpage

1448

Abstract

This paper recaptures a low frequency oscillation occurred during simulation and finally being resolved in the real grid. Three hypothesis are proposed to tackle this issue, namely the ferro-resonance caused by hasty stepping up, the inrush current derived from remanence in transformer and the parameter resonance between the unit and experiment grid. After being refuted consecutively it is assumed that the auto-excitation system parameter resonates with grid. Expectedly the oscillation vanished by altering the control parameter with proof of some simulation results. At last two conclusions are presented from experimental analysis.

Keywords

ferroresonance; hydroelectric power; power system stability; black-start; ferroresonance; hydropower plant; low frequency oscillation; parameter resonance; Circuit faults; Hydroelectric power generation; Oscillators; Substations; Surges; Transient analysis; black-start; excitation system; low frequency oscillation; parameter resonance; stepping up from zero;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Utility Deregulation and Restructuring and Power Technologies (DRPT), 2011 4th International Conference on

Conference_Location

Weihai, Shandong

Print_ISBN

978-1-4577-0364-5

Type

conf

DOI

10.1109/DRPT.2011.5994123

Filename

5994123