A novel method for low-frequency oscillation suppression based on PV system

Author

Minghua Zhu ; Fang Zhuo

Author_Institution

Sch. of Electr. Eng., Xi´an Jiaotong Univ., Xi´an, China

fYear

2014

fDate

5-8 Nov. 2014

Firstpage

251

Lastpage

254

Abstract

Low-frequency oscillation occurs when the transmission lines equivalent impedance is small or negative. As the increase penetration of PV system, it plays an important role for system stability. A novel method for low-frequency oscillation suppression based on PV system is proposed. Model of PV accessed to power grid is established, which reveal the relationship between output power of PV system and power oscillation of power system. Three control strategies are proposed and comparison of different methods is made. Simulation and experiment are carried out on a 50-kVA prototype to validate the practicability of control strategy.

Keywords

harmonics suppression; oscillations; photovoltaic power systems; power grids; power system stability; reactive power control; PV system; low-frequency oscillation suppression; photovoltaic power system; power grid; power system; reactive power control; system stability; transmission line equivalent impedance; Computational modeling; Generators; Inverters; Oscillators; Power control; Reactive power control; Low-frequency oscillation suppression; PV system; control strategy;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics and Application Conference and Exposition (PEAC), 2014 International

Conference_Location

Shanghai

Type

conf

DOI

10.1109/PEAC.2014.7037863

Filename

7037863