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光伏并网逆变器控制参数的dq轴解耦辨识策略
引用本文:沈欣炜,郑竞宏,朱守真,朱凌志,施涛,曲立楠.光伏并网逆变器控制参数的dq轴解耦辨识策略[J].电力系统自动化,2014,38(4):38-43.
作者姓名:沈欣炜  郑竞宏  朱守真  朱凌志  施涛  曲立楠
作者单位:清华大学电机工程与应用电子技术系, 北京市100084; 电力系统及发电设备控制和仿真国家重点实验室, 清华大学, 北京市 100084;清华大学电机工程与应用电子技术系, 北京市100084; 电力系统及发电设备控制和仿真国家重点实验室, 清华大学, 北京市 100084;清华大学电机工程与应用电子技术系, 北京市100084; 电力系统及发电设备控制和仿真国家重点实验室, 清华大学, 北京市 100084;中国电力科学研究院(南京), 江苏省南京市 210003;中国电力科学研究院(南京), 江苏省南京市 210003;中国电力科学研究院(南京), 江苏省南京市 210003
基金项目:国家重点基础研究发展计划(“973计划”);国家高技术研究发展计划(863计划);国家电网公司项目“并网光伏发电检测及分析评价技术及应用”
摘    要:光伏并网逆变器对光伏发电系统的动态特性具有决定性作用,因此获得准确的光伏逆变器控制参数是分析光伏发电系统并网影响的基础。提出了一种针对典型光伏并网逆变器双环控制模型的dq轴参数解耦辨识策略,并通过仿真算例比较了解耦模型在不同噪声水平下的辨识效果,分析了不同类型的扰动数据对辨识的影响规律,讨论了滤波电感参数有偏差时对辨识结果的影响,最后通过参数适用性检验算例验证了所提出辨识方法的有效性。

关 键 词:光伏发电  逆变器  dq轴参数解耦  参数辨识  阻尼最小二乘法
收稿时间:2013/3/28 0:00:00
修稿时间:1/8/2014 12:00:00 AM

A dq Axis Decoupling Parameter Identification Strategy for Grid-connected Inverter Controller of Photovoltaic Generation System
SHEN Xinwei,ZHENG Jinghong,ZHU Shouzhen,ZHU Lingzhi,SHI Tao and QU Linan.A dq Axis Decoupling Parameter Identification Strategy for Grid-connected Inverter Controller of Photovoltaic Generation System[J].Automation of Electric Power Systems,2014,38(4):38-43.
Authors:SHEN Xinwei  ZHENG Jinghong  ZHU Shouzhen  ZHU Lingzhi  SHI Tao and QU Linan
Affiliation:Department of Electrical Engineering, Tsinghua University, Beijing 100084, China; State Key Laboratory of Control and Simulation of Power Systems and Generation Equipments, Tsinghua University, Beijing 100084, China;Department of Electrical Engineering, Tsinghua University, Beijing 100084, China; State Key Laboratory of Control and Simulation of Power Systems and Generation Equipments, Tsinghua University, Beijing 100084, China;Department of Electrical Engineering, Tsinghua University, Beijing 100084, China; State Key Laboratory of Control and Simulation of Power Systems and Generation Equipments, Tsinghua University, Beijing 100084, China;China Electric Power Research Institute (Nanjing), Nanjing 210003, China;China Electric Power Research Institute (Nanjing), Nanjing 210003, China;China Electric Power Research Institute (Nanjing), Nanjing 210003, China
Abstract:The controller of grid-connected inverter plays a decisive role in the transient characteristics of the photovoltaic (PV) system. Therefore, the accuracy of the controller parameters is quite important in the analysis of PV system impact on the power system. This paper presents a dq axis decoupling parameter identification strategy for a typical PV inverter, which contains double loop control model. Furthermore, the parameter identification effects are compared, in terms of the impact of different levels of noise and different types of disturbances. In addition, the impact of the filter inductance error on the identification is discussed. Finally, the validity of the identification strategy is proved by case studies.
Keywords:photovoltaic generation  inverter  dq axis parameter decoupling  parameter identification  damped least square method
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