基于准同步采样的电网频率测量装置设计
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摘要
如何克服非同步采样偏差对频率测量结果的影响,一直是国内外学者研究的重点。装置采用准同步采样电网频率测量算法,设计基于模数转换器和数字信号处理器的电网频率测量装置,给出了设计原理框图和工作流程图,提出了基于最小二乘法的频率测量装置校准方案,开展了测量实验并分析了实验结果。实验结果表明,频率测量装置的研究可为用于电能质量检测、电力系统保护的电网频率测量提供借鉴。
How to overcome the influence of non-synchronous sampling bias on frequency measurement results has been the focus of scholars at home and abroad. In this paper,the quasi-synchronous sampling grid frequency measurement algorithm is used to design the grid frequency measuring device based on analog-to-digital converter and digital signal processor. The design principle block diagram and working flow chart are given. The frequency measurement device calibration based on least squares method is proposed. The program,carried out measurement experiments and analyzed the experimental results. The research in this paper provides a reference for grid frequency measurement for power quality detection and power system protection.
How to overcome the influence of non-synchronous sampling bias on frequency measurement results has been the focus of scholars at home and abroad. In this paper,the quasi-synchronous sampling grid frequency measurement algorithm is used to design the grid frequency measuring device based on analog-to-digital converter and digital signal processor. The design principle block diagram and working flow chart are given. The frequency measurement device calibration based on least squares method is proposed. The program,carried out measurement experiments and analyzed the experimental results. The research in this paper provides a reference for grid frequency measurement for power quality detection and power system protection.
引文
[1]孟卓.改进准同步采样电力系统频率测量方法及应用研究[D].长沙:湖南大学,2015.
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[4]曹晖,袁世英,易珺,等.准同步采样法在配电综合测控仪中的应用.继电器,2005,33(17):45-48,57.
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[6]俞红祥,梅广益,徐洪.基于准同步采样技术的配电网电能质量在线监测装置.仪器仪表学报,2008,29(10):2201-2206.
[7] He Wen,Chengcheng,Li,Lu Tang. Novel threepoint interpolation DFT method for frequency measurement of sine-Wave[J].IEEE Transactions on Industrial Informatics,2017,13(5):2333-2338.
[8] He Wen,Junhao Zhang,Zhuo Meng,et al. Harmonic estimation using symmetrical interpolation FFTbasedontriangularself-convolutionwindow[J].IEEE Transactions on Industrial Informatics,2015,11(1):16-26.
[9]戴先中,唐统一.准同步采样在电力系统频率、频偏和相位差测量中的应用.计量学报,1989,10(4):290-296.
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[11]王珊,王利,刘琪.基于DSP的视频测速系统[J].国外电子测量技术,2017,36(8):96-99.
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[2]廖建庆,陈琼.便携式交流采样在线测试仪的设计[J].仪表技术与传感器,2008(12):28-30.
[3]肖朵艳,谭卫斌,张维.一种实用的电力系统频率实时测量方法.电力系统保护与控制,2014,42(21):29-33.
[4]曹晖,袁世英,易珺,等.准同步采样法在配电综合测控仪中的应用.继电器,2005,33(17):45-48,57.
[5]李加升,柴世杰,戴瑜兴.基于插值理论的准同步算法在谐波检测中的应用研究.电测与仪表,2008,45(6):1-4,9.
[6]俞红祥,梅广益,徐洪.基于准同步采样技术的配电网电能质量在线监测装置.仪器仪表学报,2008,29(10):2201-2206.
[7] He Wen,Chengcheng,Li,Lu Tang. Novel threepoint interpolation DFT method for frequency measurement of sine-Wave[J].IEEE Transactions on Industrial Informatics,2017,13(5):2333-2338.
[8] He Wen,Junhao Zhang,Zhuo Meng,et al. Harmonic estimation using symmetrical interpolation FFTbasedontriangularself-convolutionwindow[J].IEEE Transactions on Industrial Informatics,2015,11(1):16-26.
[9]戴先中,唐统一.准同步采样在电力系统频率、频偏和相位差测量中的应用.计量学报,1989,10(4):290-296.
[10]封安,姚彬,隽鹏辉.基于TMS320C6748的高精度AD采集系统设计与实现[J].信息通信,2018(2):48-49.
[11]王珊,王利,刘琪.基于DSP的视频测速系统[J].国外电子测量技术,2017,36(8):96-99.
[12]李董董.基于TMS320C6748的扶梯乘客检测与跟踪系统的设计与实现[D].广州:华南理工大学,2017.
[13]李凯.基于TMS320C6748高速DSP信号处理模块设计[D].哈尔滨:哈尔滨工程大学,2013.
[14]中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会电能质量电力系统频率偏差:GB/T 15945-2008[S].北京:中国标准出版社,2009.
[15]中华人民共和国国家质量监督检验检疫总局、中国国家标准化管理委员会电能质量监测设备通用要求:GB/T 19862-2016[S].北京:中国标准出版社,2016.
[16]中华人民共和国国家发展和改革委员会.电能质量测试分析仪检定规程:DL/T 1028-2006[S].北京:中国电力出版社,2007.