一种可实现分级调试的新型锁相环技术
|
摘要
准确、快速地提取电网同步相位信息是并网逆变器正常工作的基本要求。为有效提取非电网环境下的相位信息,提出了一种可实现分级调试的新型锁相环技术。采用特定谐波消除的鉴相方式实现一级调试,在有效提取谐波污染下电网信息的同时大幅简化算法,提高锁相过程的快速性。加入低通滤波器从而能够对高频干扰信号产生衰减和抑制,以此作为二级调试。仿真结果表明,分级调试的新型锁相环,可在非理想电网环境下能够对电网同步相位的准确跟踪,干扰抑制能力强且同时适用于单相和三相并网系统。
It is the basic requirement of normal work for grid connected converter to accurately and fast acquire the synchronous phase. In order to effectively extract the phase information in the non grid environment,this paper proposes a new phase locked loop technology. The phase discrimination method using a specific harmonic elimination is used to realize the first level debugging,which can greatly simplify the algorithm and improve the speed of the phase lock process under the effective extraction of harmonic pollution. The low-pass filter is added to suppress the high frequency interference signal,which is used as the second level debugging. The simulation and experiment show that the hierarchical debugging of new phase locked loop technology,can achieve accurate tracking of grid synchronization phase in non ideal grid environment,strong ability to suppress interference and is suitable for both single-phase and three-phase grid connected system.
It is the basic requirement of normal work for grid connected converter to accurately and fast acquire the synchronous phase. In order to effectively extract the phase information in the non grid environment,this paper proposes a new phase locked loop technology. The phase discrimination method using a specific harmonic elimination is used to realize the first level debugging,which can greatly simplify the algorithm and improve the speed of the phase lock process under the effective extraction of harmonic pollution. The low-pass filter is added to suppress the high frequency interference signal,which is used as the second level debugging. The simulation and experiment show that the hierarchical debugging of new phase locked loop technology,can achieve accurate tracking of grid synchronization phase in non ideal grid environment,strong ability to suppress interference and is suitable for both single-phase and three-phase grid connected system.
引文
[1]袁庆庆,伍小杰,石祥龙,等.基于特定谐波消除的并网锁相环技术[J].中国电机工程学报,2013,33(36):34-40.
[2]胡应占,郭素娜.适用于电网不平衡时的广义积分器锁相环设计[J].电力系统保护与控制,2014,42(11):148-154.
[3]李尧,董姝敏,乔双.锁相环的改进及仿真[J].东北师大学报:自然科学版,2009,37(4):53-56.
[4]苏刘军,鲁宝春,李昌超,等.一种改进的无锁相环三相电压波动检测方法[J].电力系统保护与控制,2014,42(8):121-126.
[5]许志鹏,余剑.锁相环中鉴相器的设计与仿真[J].电子测量技术,2011,34(11):32-35.
[6]陈明亮,肖飞,刘勇,等.一种正负序分离锁相环及其在并网型风力发电系统中的应用[J].电工技术学报,2013,28(8):181-186.
[7]黄海宏,张庭茂,魏亚坤,等.电压不平衡时单同步坐标系锁相环的改进算法[J].电子测量与仪器学报,2016,30(6):937-944.
[8]王宝诚,伞国成,郭小强,等.分布式发电系统电网同步锁相技术[J].中国电机工程学报,2013,33(1):50-55.
[9]季青涛,殷兴辉.基于MSP430的锁相环控制系统设计[J].国外电子测量技术,2016,35(8):99-102.
[10]徐云鹏,薛雅丽,武玉衡,等.基于平面电感角位置传感器的双同步参考系锁相环[J].仪器仪表学报,2017,38(2):408-415.
[11]LEI F R,WHITE M H.Reference injected phase-locked loops(PLL-RIs)[J].IEEE Transactions on Circuits and Systems-I,2017,64(7):1651-1660.
[12]张永昌,赵争鸣,张颖超,等.三电平变频调速系统SVPWM和SHEPWM混合调制方法的研究[J].中国电机工程学报,2007,27(16):72-77.
[13]费万民,张艳莉,阮新波,等.三电平逆变器SHEPWM非线性方程组的求解[J].中国电机工程学报,2009,28(6):62-68.
[14]关清心,张宇,李民英,等.基于微分环节的单相锁相环方法[J].中国电机工程学报,2016,19(36):18-25.
[15]熊连松.单相电力信号同步相位的快速捕获方法研究[J].中国电机工程学报,2015,35(9):2209-2216.
[16]杜佳玮,杨鹏,史旺旺.考虑频率变化的基于DFT单相数字锁相环的椭圆拟合方法[J].继电器,2015,43(10):85-90.
[17]麦瑞坤.电力系统频率的自适应跟踪算法[J].中国电机工程学报,2010,30(16):73-78.
[2]胡应占,郭素娜.适用于电网不平衡时的广义积分器锁相环设计[J].电力系统保护与控制,2014,42(11):148-154.
[3]李尧,董姝敏,乔双.锁相环的改进及仿真[J].东北师大学报:自然科学版,2009,37(4):53-56.
[4]苏刘军,鲁宝春,李昌超,等.一种改进的无锁相环三相电压波动检测方法[J].电力系统保护与控制,2014,42(8):121-126.
[5]许志鹏,余剑.锁相环中鉴相器的设计与仿真[J].电子测量技术,2011,34(11):32-35.
[6]陈明亮,肖飞,刘勇,等.一种正负序分离锁相环及其在并网型风力发电系统中的应用[J].电工技术学报,2013,28(8):181-186.
[7]黄海宏,张庭茂,魏亚坤,等.电压不平衡时单同步坐标系锁相环的改进算法[J].电子测量与仪器学报,2016,30(6):937-944.
[8]王宝诚,伞国成,郭小强,等.分布式发电系统电网同步锁相技术[J].中国电机工程学报,2013,33(1):50-55.
[9]季青涛,殷兴辉.基于MSP430的锁相环控制系统设计[J].国外电子测量技术,2016,35(8):99-102.
[10]徐云鹏,薛雅丽,武玉衡,等.基于平面电感角位置传感器的双同步参考系锁相环[J].仪器仪表学报,2017,38(2):408-415.
[11]LEI F R,WHITE M H.Reference injected phase-locked loops(PLL-RIs)[J].IEEE Transactions on Circuits and Systems-I,2017,64(7):1651-1660.
[12]张永昌,赵争鸣,张颖超,等.三电平变频调速系统SVPWM和SHEPWM混合调制方法的研究[J].中国电机工程学报,2007,27(16):72-77.
[13]费万民,张艳莉,阮新波,等.三电平逆变器SHEPWM非线性方程组的求解[J].中国电机工程学报,2009,28(6):62-68.
[14]关清心,张宇,李民英,等.基于微分环节的单相锁相环方法[J].中国电机工程学报,2016,19(36):18-25.
[15]熊连松.单相电力信号同步相位的快速捕获方法研究[J].中国电机工程学报,2015,35(9):2209-2216.
[16]杜佳玮,杨鹏,史旺旺.考虑频率变化的基于DFT单相数字锁相环的椭圆拟合方法[J].继电器,2015,43(10):85-90.
[17]麦瑞坤.电力系统频率的自适应跟踪算法[J].中国电机工程学报,2010,30(16):73-78.