Analysis of Hydro-Coupled Power Plants and Design of Robust Control to Damp Oscillatory Modes

Author

Villegas Pico, Hugo N. ; Aliprantis, Dionysios C. ; McCalley, James D. ; Elia, Nicola ; Castrillon, Neby J.

Author_Institution

Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA

Volume

30

Issue

2

fYear

2015

fDate

42064

Firstpage

632

Lastpage

643

Abstract

This paper presents an investigation of hydro power plants with pelton-type turbine-generator sets that are coupled hydraulically and electrically. In particular, the dynamic behavior and speed performance of this type of power plants at black-start is analyzed using singular value decomposition (SVD) and relative gain array (RGA). Following, robust control theory is used to design a hydro-stabilizer that improves the performance of coupled turbines while accounting for typical uncertainties in actuators.

Keywords

hydroelectric power stations; power generation control; power system stability; robust control; RGA; SVD; damp oscillatory modes; hydro-coupled power plants; hydro-stabilizer; pelton-type turbine-generator sets; power plants; relative gain array; robust control design; robust control theory; singular value decomposition; Hydraulic turbines; Oscillators; Power system dynamics; Uncertainty; Vectors; Dynamics; frequency control; frequency stability; hydroelectric power generation;

fLanguage

English

Journal_Title

Power Systems, IEEE Transactions on

Publisher

ieee

ISSN

0885-8950

Type

jour

DOI

10.1109/TPWRS.2014.2333002

Filename

6861466