年珩;沈永波;宋亦鹏;

• 1:浙江大学电气工程学院

摘要(Abstract)：

为提高并网逆变器对电网的适应能力,提出了不平衡及谐波电网电压下并网逆变器的直接功率控制策略。建立了同步旋转坐标系下的并网逆变器数学模型;以输出有功和无功功率平稳或输出电流三相平衡且波形正弦为控制目标,在传统直接功率控制基础上引入矢量比例积分(vector proportional integrator,VPI)谐振控制器以抑制功率或者电流的波动;分析了VPI谐振调节器的参数设计规律及不同控制目标下所提策略的控制性能。实验结果验证了所提策略的有效性。

关键词(KeyWords)： 不平衡及谐波电网电压;并网逆变器;直接功率控制;矢量比例积分谐振调节器;功率平稳

Abstract:

Keywords:

基金项目(Foundation): 国家863高技术基金项目(2011AA050204)~~

作者(Author): 年珩;沈永波;宋亦鹏;

Email:

DOI: 10.13335/j.1000-3673.pst.2014.06.005

参考文献(References)：

• [1]Carrasco J M,Franquelo L G,Bialasiewicz J T,et al.Power electronic systems for the grid integration of renewable energy sources:a survey[J].IEEE Transactions on Industrial Electronics,2006,53(4):1002-1016.
• [2]鲍薇,胡学浩,何国庆,等.分布式电源并网标准研究[J].电网技术,2012,36(11):46-52.Bao Wei,Hu Xuehao,He Guoqing,et al.Study on standard for grid-integration of distributed resources[J].Power System Technology,2012,36(11):46-52(in Chinese).
• [3]Zhi D,Xu L.Improved direct power control of grid-connected DC/AC converters[J].IEEE Transactions on Power Electronics,2009,24(5):1280-1292.
• [4]周杨,江道灼,王玉芬.基于虚拟磁链的静止同步补偿器直接功率控制策略研究[J].电网技术,2012,36(11):205-210.Zhou Yang,Jiang Daozhuo,Wang Yufen.Study on direct power control of static synchronous compensator based on virtual flux linkage[J].Power System Technology,2012,36(11):205-210(in Chinese).
• [5]Yongsug S,Lipo T A.Control scheme in hybrid synchronous stationary frame for PWM AC/DC converter under generalized unbalanced operating conditions[J].IEEE Transactions on Industry Applications,2006,42(3):825-835.
• [6]章玮,王宏胜,任远,等.不对称电网电压条件下三相并网型逆变器的控制[J].电工技术学报,2010,25(12):103-110.Zhang Wei,Wang Hongsheng,Ren Yuan,et al.Investigation on control of three-phase grid-connected invertersunder unbalanced grid voltage conditions[J].Transactions of China Electro Technical Society,2010,25(12):103-110(in Chinese).
• [7]赵伟然,李光辉,何国庆,等.光伏电站经VSC-HVDC并网拓扑及其控制策略[J].电网技术,2012,36(11):41-45.Zhao Weiran,Li Guanghui,He Guoqing,et al.Topology of connecting photovoltaic power station to power grid via VSC-HVDC and its control strategy[J].Power System Technology,2012,36(11):41-45(in Chinese).
• [8]谢玲玲,时斌,华国玉,等.基于改进下垂控制的分布式电源并联运行技术[J].电网技术,2013,37(4):992-998.Xie Lingling,Shi Bin,Hua Guoyu,et al.Parallel operation technology of distributed generations based on improved droop control[J].Power System Technology,2013,37(4):992-998(in Chinese).
• [9]郭旭刚,高增伟,尹靖元,等.不平衡电网电压下的PWM整流器功率预测[J].电网技术,2013,37(8):2362-2367.Guo Xugang,Gao Zengwei,Yin Jingyuan,et al.Predictive direct power control for PWM rectifier underunbalanced grid voltage conditions[J].Power System Technology,2013,37(8):2362-2367(in Chinese).
• [10]Yu Quan,Heng Nian,Jiabing Hu,et al.Improved control of the grid-connected converter under the harmonically distorted grid voltage[C]//Electrical Machines and Systems(ICEMS),2010International Conference.Incheon:ICEMS,2010:204-209.
• [11]Hu Jiabing,Hailiang Xu,Yikang He.Coordinated control of DFIG’s RSC and GSC under generalized unbalanced and distorted grid voltage conditions[J].IEEE Transactions on Industrial Electronics,2013,60(7):2808-2819.
• [12]Lohde R,Fuchs F W.Improved DPC method of VSC to fulfill low voltage ride through requirements in wind power applications[C]//Power Electronics and Motion Control Conference(EPE/PEMC).Ohrid:EPE/PEMC,2010:35-42.
• [13]耿强,夏长亮,阎彦,等.电网电压不平衡情况下PWM整流器恒频直接功率控制[J].中国电机工程学报,2010,30(36):79-85.Geng Qiang,Xia Changliang,Yan Yan,et al.Direct power control in constant switching frequency for PWM rectifier under unbalanced grid voltage conditions[J].Proceedings of the CSEE,2010,30(36):79-85(in Chinese).
• [14]Peng Z,Yikang H,Dan S.Improved direct power control of a DFIG-based wind turbine during network unbalance[J].IEEE Transactions on Power Electronics,2009,24(11):2465-2474.
• [15]年珩,宋亦鹏.谐波电网下基于矢量比例积分电流调节器的双馈异步发电机运行控制技术[J].中国电机工程学报,2013,33(6):101-111.Nian Heng,Song Yipeng.DFIG operation control strategy under distorted grid conditions based on VPI current regulators[J].Proceedings of the CSEE,2013,33(6):101-111(in Chinese).
• [16]Lascu C,Asiminoaei L,Boldea I,et al.Frequency response analysis of current controllers for selective harmonic compensation in active power filters[J].IEEE Transactions on Industrial Electronics,2009,56(2):337-347.
• [17]Golestan S,Monfared M,Freijedo F D.Design-oriented study of advanced synchronous reference frame phase-locked loops[J].IEEE Transactions on Power Electronics,2013,28(2):765-778.
• [18]Bajracharya C,Molinas M,Suul J A,et al.Understanding tuning techniques of converter controllers for VSC-HVDC[C]//Nordic Workshop on Power and Industrial Electronics.Espoo,Finland:Nordic Workshop on Power and Industrial Electronics,2008:101-109.
• [19]颜文俊,陈素琴,林峰.控制理论CAI教程[M].北京:科学出版社,2006:76-93.