光伏发电系统的小信号建模及其控制器参数的全局优化设计方法

发布时间：2018-04-16 19:36

本文选题：光伏发电系统 + 小信号建模　；参考：《电网技术》2014年05期

【摘要】：研究光伏发电系统的暂态稳定性有利于认识太阳能发电与电力系统之间的交互式影响规律。在充分考虑光伏发电系统中各重要环节的详细模型的基础之上,建立了适用于暂态稳定分析的全系统小信号模型,并据此分析了光伏发电系统的小干扰稳定性和低频振荡特性。研究结果表明:光伏逆变器的电压外环以及有功电流内环对系统的特征值影响较显著且较全面,对系统的稳定性影响较大。电压外环的积分系数以及有功电流内环的比例系数过大均可能会对电力系统阻尼产生负面影响,甚至改变光伏发电系统的阻尼性质。最后提出了一种提高系统稳定性的控制器参数全局优化设计方法,为科学合理地设计控制器参数提供了方法支撑。
[Abstract]:The study of the transient stability of photovoltaic power system is helpful to understand the interaction law between solar power generation and power system.On the basis of considering the detailed models of every important link in photovoltaic power system, a small signal model for transient stability analysis is established, and the small disturbance stability and low frequency oscillation characteristics of photovoltaic power system are analyzed.The results show that the voltage outer loop and active current inner loop of photovoltaic inverter have a significant and comprehensive effect on the eigenvalue of the system, and have a great influence on the stability of the system.Both the integral coefficient of the voltage outer loop and the proportional coefficient of the active current inner loop may have a negative effect on the damping of the power system, and even change the damping property of the photovoltaic power system.Finally, a global optimization design method for the controller parameters is proposed to improve the stability of the system, which provides the method support for the scientific and reasonable design of the controller parameters.
【作者单位】：西安交通大学电气工程学院;许继集团有限公司;
【基金】：国家863高技术基金项目(2012AA050206)~~
【分类号】：TM615.2

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