摘要
在MATLAB/Simulink环境中搭建了光伏发电系统模型,其采用最大功率点跟踪(MPPT)控制算法,并加入继电保护逻辑控制模块。通过PSASP的用户程序接口,可将该模型以电流源的形式接入电网模型进行暂态稳定计算。同时提出在电流源并网模式下并网光伏发电系统控制其与电网的无功功率交换为0,因此在潮流计算中可将光伏电站设为PQ节点,并设无功功率为0。CEPRI 36节点系统的仿真结果验证了该模型的正确性,并表明所提模型比常规同步电机二阶经典模型对电网故障的反应更为灵敏,但其对于改善全系统的暂态稳定性作用不大。
A model of PV（PhotoVohaic） power system is established with MATLAB/Simulink ,which adopts the control algorithm of MPPT（Maximum Power Point Tracking） and the logic control module of relay protection,and is connected to power system via the user program interface of PSASP and in the form of current source for transient stability computation. It is proposed that the reactive power exchange between PV and system in the current source mode of grid connection is controlled to zero. Therefore,the PV station is taken as PQ node with zero reactive power in power flow calculation. Simulative results of CEPRI 36-bus system show the correctness of the proposed model and demonstrate that,compared with the classical second-order model of synchronous motor,it responses to power grid fault more sensitively,but contributes little to the transient stability improvement of the whole power system.
出处
《电力自动化设备》
EI
CSCD
北大核心
2012年第6期80-85,共6页
Electric Power Automation Equipment
关键词
光伏电池
发电
MATLAB
电力系统
暂态分析
稳定性
photovoltaic cells
electric power generation
MATLAB
electric power systems
transient analysis
Stability
