Open AccessMechanism Analysis of PV Generation System for Damping Electromechanical Oscillations
Author(s) -
Mingxian Li,
Hua Chai,
Li Ding,
Yi Zhang,
Yue Wang,
Zhen Tang
Publication year - 2020
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/510/2/022047
Subject(s) - control theory (sociology) , pid controller , synchronization (alternating current) , matlab , electric power system , controller (irrigation) , damping torque , photovoltaic system , oscillation (cell signaling) , power (physics) , rotor (electric) , mechanism (biology) , torque , engineering , control system , control engineering , computer science , physics , control (management) , voltage , direct torque control , induction motor , topology (electrical circuits) , electrical engineering , artificial intelligence , temperature control , quantum mechanics , genetics , biology , operating system , agronomy , thermodynamics
For physically understanding the dynamic response of a photovoltaic (PV)-based integrated power system for electromechanical oscillation damping, firstly, this paper develops the linear mathematical model of a single machine infinite bus system integrated with PV in the electromechanical time scale. Then, based on the electric torque analysis method and the functional route of active power control ( P -control) and reactive power control ( Q -control), the key factors and influence laws of the power system inertial effect, damping level and synchronization capability are analyzed. The results show that when the PV operating mode utilizes the rotor speed as feedback signal, the PID controller parameters of P or Q -control loop can affect the damping level, synchronization capability and inertial effect of the power system, respectively. The accuracy of the physical mechanism analysis is verified by MATLAB.