Title :
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
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;
Conference_Titel :
Electronics and Application Conference and Exposition (PEAC), 2014 International
Conference_Location :
Shanghai
DOI :
10.1109/PEAC.2014.7037863
