应用于有源滤波器的新型软锁相环技术
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摘要
为了使有源滤波器可以在较短的时间内将由于大规模非线性负载接入电力系统带来的不同类型的谐波滤除并使谐波含量达到电网标准,在对于谐波产生的原因、由谐波产生的影响以及现有系统中的有源滤波器工作情况进行总结的基础上提出了一种采用反正弦函数加速收敛的新型软锁相环技术,在满足误差要求的前提下,可以实现绝大部分相位偏移范围内的1次调节锁相。将这种软锁相环应用于实际的有源滤波器系统当中,通过MATLAB/Simulink仿真实验证明,在相同电源和带有相同负载的条件对采用新型软锁相环技术的有源滤波器与采用传统硬锁相环的有源滤波器的各项指标进行对比,结果表明:采用新型软锁相环的有源滤波器相比收敛速度更快,最终的滤波和补偿效果更好。
In order to remove harmonic created by the large-scale nonlinear loads connected to the power system caused by different types of harmonic filters,and meet the standard of the grid harmonic content,a new technique is proposed in this paper. By concluding the reasons for harmonic generation,influence of the harmonic on the grid,and working conditions of the existing active power filters,the method is set up based on a new soft phase locked loop technique of inversing sine function to accelerate the convergence. Under the premise of precision,the method can realize the 1 adjustment phase lock with vast majority phase shift range. And the soft phase lock loop has been used in the actual active power filter system and proved by Matlab/Simulink simulation. As is demonstrated,with the same power and load conditions,by comparison of the newly proposed filter with traditional one,the convergence speed of the former is faster,and the final effect of filtering and compensation is better.
In order to remove harmonic created by the large-scale nonlinear loads connected to the power system caused by different types of harmonic filters,and meet the standard of the grid harmonic content,a new technique is proposed in this paper. By concluding the reasons for harmonic generation,influence of the harmonic on the grid,and working conditions of the existing active power filters,the method is set up based on a new soft phase locked loop technique of inversing sine function to accelerate the convergence. Under the premise of precision,the method can realize the 1 adjustment phase lock with vast majority phase shift range. And the soft phase lock loop has been used in the actual active power filter system and proved by Matlab/Simulink simulation. As is demonstrated,with the same power and load conditions,by comparison of the newly proposed filter with traditional one,the convergence speed of the former is faster,and the final effect of filtering and compensation is better.
引文
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[13]徐志,栗时平,郭振华,等.基于复合二阶广义积分器的广义谐波电流检测法[J].电力科学与工程,2015,31(1):49-53.
[14]张宸宇,梅军,郑建勇.等.无负载侧谐波检测的有源滤波器自适应预测算法[J].电力自动化设备,2014,34(6):55-61.
[15]曹武,江楠,刘康礼,等.改进谐波分次检测结合集中电流环的APF谐波独立控制实现[J].中国电机工程学报,2014,34(3):387-396.
[16]BENCHOUIA M T,GHADBANE I,GOLEA A,et al.Implementation of adaptive fuzzy logic and PI controllers to regulate the DC bus voltage of shunt active power filter[J].Applied Soft Computing,2015,(28):125-131.
[17]马立新,肖川,林家隽,等.神经网络与锁相环相结合的谐波检测方法[J].电力系统及其自动化学报,2011,23(3):24-29.
[2]蒋东东,吴敏辉,邵振国.谐波污染用户建模及危害评估[J].电力科学与工程,2014,30(1):32-37.
[3]章梁磊.一种单相软锁相环的改进算法研究[J].电子制作,2015(4):30-31.
[4]陈瑞.基于改进型软锁相环的大容量充放电装置的应用研究[J].船电技术,2015,35(5):14-19.
[5]马立新,严亮,吴兴锋.有源电力滤波器故障诊断系统的设计[J].机电工程,2014,31(11):1483-1485.
[6]胡庆,刘克.一种实用的反三角函数快速算法[J].华东工学院学报,1992,61(1):82-92.
[7]马立新,项庆,原晓琴.基于双树复小波和ICA的电网谐波检测方法[J].电力科学与工程,2016,32(1):53-57.
[8]辛业春,李国庆,王尧,等.基于双dq坐标变换的三相电压锁相环的研究[J].电力系统保护与控制,2014,42(10):114-118.
[9]王颢雄,马伟明,肖飞,等.双dq变换软件锁相环的数学建模研究[J].电工技术学报,2011,26(7):237-241.
[10]马莉,周景海,吕征宇,等.一种基于dq变换的改进型谐波检测方案的研究[J].中国电机工程学报,2000,20(10):55-58.
[11]郭子雷,张海燕,徐强,等.新型锁相环技术及仿真分析[J].电测与仪表,2015,52(9):82-86.
[12]荆鸿儒,简优宗.一种无锁相环的有源电力滤波器的设计研究[J].电气自动化,2011,33(4):39-42.
[13]徐志,栗时平,郭振华,等.基于复合二阶广义积分器的广义谐波电流检测法[J].电力科学与工程,2015,31(1):49-53.
[14]张宸宇,梅军,郑建勇.等.无负载侧谐波检测的有源滤波器自适应预测算法[J].电力自动化设备,2014,34(6):55-61.
[15]曹武,江楠,刘康礼,等.改进谐波分次检测结合集中电流环的APF谐波独立控制实现[J].中国电机工程学报,2014,34(3):387-396.
[16]BENCHOUIA M T,GHADBANE I,GOLEA A,et al.Implementation of adaptive fuzzy logic and PI controllers to regulate the DC bus voltage of shunt active power filter[J].Applied Soft Computing,2015,(28):125-131.
[17]马立新,肖川,林家隽,等.神经网络与锁相环相结合的谐波检测方法[J].电力系统及其自动化学报,2011,23(3):24-29.