High Accuracy Dielectric Loss Angle Measurement Method Based on Sampling Sequence Reconstruction
Wang Yong1, Teng Zhaosheng1, Li Jianmin1, Tang Qiu1, Cheng Da2
1. College of Electrical and Information Engineering Hunan University Changsha 410082 China; 2. China Electric Power Research Institute Beijing 100192 China
Abstract：In order to measure dielectric loss angle (DLA) accurately, and overcome the defects caused by fundamental frequency fluctuation, sampling rate, word length of the analog-to-digital converter, and noise, a dielectric loss angle measurement algorithm based on sequence reconstruction is proposed in this paper. Firstly, the fundamental frequency is estimated accurately through frequency shifting and filtering on the original sampling sequence. Then, the sampling sequence of actual voltage and current is reconstructed by combining the estimated frequency and cubic spline interpolation method. Finally, the fast Fourier transform of the reconstructed voltage and current sampling sequence is implemented to obtain the dielectric loss angle accurately. Simulation results show that the new algorithm proposed in this paper can accurately measure the dielectric loss angle, which is not affected by the limit of asynchronous sampling and the influence of noise. The practical experiments using the hardware test platform verified the accuracy and effectiveness of the new algorithm.
王永, 滕召胜, 李建闽, 唐求, 成达. 基于采样序列重构的高精度介质损耗角测量方法[J]. 电工技术学报, 2018, 33(23): 5607-5615.
Wang Yong, Teng Zhaosheng, Li Jianmin, Tang Qiu, Cheng Da. High Accuracy Dielectric Loss Angle Measurement Method Based on Sampling Sequence Reconstruction. Transactions of China Electrotechnical Society, 2018, 33(23): 5607-5615.
[1] Wang Pei, Raghuveer M R, Mcdermid W, et al.A digital technique for the on-line measurement of dissipation factor and capacitance[J]. IEEE Transactions on Dielectrics & Electrical Insulation, 2001, 8(2): 228-232. [2] 杨丽君, 徐积全, 胡恩德, 等. 变压器油中腐蚀性硫浓度对绕组绝缘电气性能的影响[J]. 电工技术学报, 2016, 31(10): 42-48. Yang Lijun, Xu Jiquan, Hu Ende, et al.The influence of corrosive sulfur contentation in transformer oil to the electrical properties of insulated windings[J]. Transactions of China Electrotechnical Society, 2016, 31(10): 42-48. [3] 杨丽君, 齐超亮, 吕彦冬, 等. 变压器油纸绝缘状态的频域介电谱特征参量及评估方法[J]. 电工技术学报, 2015, 30(1): 212-219. Yang Lijun, Qi Chaoliang, Lü Yandong, et al.Characteristic parameters and assessment methods of frequency-domain dielectric spectroscopy of oil-oaper insulation for transformers[J]. Transactions of China Electrotechnical Society, 2015, 30(1): 212-219. [4] Perkel J, Del Valle Y, Hampton R N, et al.Interpretation of dielectric loss data on service aged polyethylene based power cable systems using VLF test methods[J]. IEEE Transactions on Dielectrics & Electrical Insulation, 2013, 20(5): 1699-1711. [5] 王永强, 律方成, 李和明. 采用支持向量机和遗传算法的电容型设备介质损耗因数修正方法[J]. 中国电机工程学报, 2009, 29(4): 123-128. Wang Yongqiang, Lü Fangcheng, Li Heming.Modified method on dielectric loss factor of capacitive equipment based on support vector machine and genetic algorithm[J]. Proceedings of the CSEE, 2009, 29(4): 123-128. [6] Cichy A.Non-bridge circuit with double quasi-balancing for measurement of dielectric loss factor[J]. IET Science Measurement Technology, 2013, 7(5): 274-279. [7] Burnley K G, Exon J L T. Diagnostic measurement based on bridge out-of-balance signals[J]. IEEE Transactions on Electrical Insulation, 1991, 26(2): 200-209. [8] 陈天翔, 张保会, 陈天韬, 等. 基于电桥平衡原理的高准确度tanδ在线测量[J]. 高电压技术, 2005, 31(1): 42-44. Chen Tianxiang, Zhang Baohui, Chen Tiantao, et al.Research on a new monitoring method of tanδ with low cost and high precision[J]. High Voltage Engineering, 2005, 31(1): 42-44. [9] Mahmud S M.Error analysis of digital phase measurement of distorted waves[J]. IEEE Transactions on Instrumentation & Measurement, 1989, 38(1): 6-9. [10] 蔡国雄, 甄为红, 杨晓洪, 等. 测量介质损耗的数字化过零点电压比较法[J]. 电网技术, 2002, 26(7): 15-18. Cai Guoxiong, Zhen Weihong, Yang Xiaohong, et al.A digitized zero cross point voltage method of comparison for measurement of dielectric losses[J]. Power System Technology, 2002, 26(7): 15-18. [11] 左自强, 徐阳, 曹晓珑, 等. 计算电容型设备介质损耗因数的相关函数法的改进[J]. 电网技术, 2004, 28(18): 53-57. Zuo Ziqiang, Xu Yang, Cao Xiaolong, et al.Improvement to correlation algorithm for dielectric dissipation factor calculation of capacitance equipments[J]. Power System Technology, 2004, 28(18): 53-57. [12] 徐志钮, 律方成, 汪佛池, 等. 用加Hanning窗插值高阶正弦拟合法测介损角[J]. 高电压技术, 2007, 33(4): 50-53. Xu Zhiniu, Lü Fangcheng, Wang Fochi, et al.Application of higher-order sine fitting algorithm with Hanning-windowed interpolated in dielectric loss angle measurement[J]. High Voltage Engineering, 2007, 33(4): 50-53. [13] 尚勇, 杨敏中, 王晓蓉, 等. 谐波分析法介质损耗因数测量的误差分析[J]. 电工技术学报, 2002, 17(3): 67-71. Shang Yong, Yang Minzhong, Wang Xiaorong, et al.Error analysis for the dielectric loss factor measurement based on harmonic analysis[J]. Transactions of China Electrotechnical Society, 2002, 17(3): 67-71. [14] 金涛, 陈毅阳, 游胜强, 等. 基于Nuttall窗-五点变换的改进FFT介质损耗角测量算法[J]. 电工技术学报, 2015, 30(增刊2): 7-15. Jin Tao, Chen Yiyang, You Shengqiang, et al.An improved FFT algorithm for dielectric loss angle based on Nuttall window and five-point polynomial transform[J]. Transactions of China Electrotechnical Society, 2015, 30(S2): 7-15. [15] 袁飞, 杨震男, 卢毅. 一种基于相对比较法测量容性设备介质损耗的滤波算法[J]. 电力系统保护与控制, 2015, 43(19): 95-100. Yuan Fei, Yang Zhennan, Lu Yi.A filtering algorithm for measuring capacitive device dielectric loss based on relative comparison method[J]. Power System Protection & Control, 2015, 43(19): 95-100. [16] Li Qingmin, Zhang Li, Zhao Tong.Definition of instantaneous dielectric loss factor and digital algorithm for online monitoring[J]. IEEE Transactions on Instrumentation & Measurement, 2009, 58(3): 666-673. [17] 王晓辉, 朱永利, 王艳, 等. 基于深度学习的电容器介损角在线辨识[J]. 电工技术学报, 2017, 32(15): 145-152. Wang Xiaohui, Zhu Yongli, Wang Yan, et al.Online identification method of power capacitor dielectric loss angle based on deep learning[J]. Transactions of China Electrotechnical Society, 2017, 32(15): 145-152. [18] Roj J, Cichy A.Method of measurement of capacitance and dielectric loss factor using artificial neural networks[J]. Measurement Science Review, 2015, 15(3): 127-131. [19] 董爽, 李天云, 王永, 等. 在线检测介质损耗角的矩阵束方法[J]. 电工技术学报, 2015, 30(18): 229-236. Dong Shuang, Li Tianyun, Wang Yong, et al.An on-line detection method of dielectric loss angle based on matrix pencil algorithm[J]. Transactions of China Electrotechnical Society, 2015, 30(18): 229-236. [20] 滕召胜, 张海焕, 李宁, 等. 基于三角基函数分解的高精度介损角测量方法[J]. 仪器仪表学报, 2015, 36(7): 1506-1513. Teng Zhaosheng, Zhang Haihuan, Li Ning, et al.High accurate dielectric loss angle measurement method base on triangle basis function decomposition[J]. Chinese Journal of Scientific Instrument, 2015, 36(7): 1506-1513. [21] 高云鹏, 滕召胜, 曾博, 等. 基于Kaiser窗频谱校正的介质损耗因数测量[J]. 电工技术学报, 2009, 24(5): 203-208. Gao Yunpeng, Teng Zhaosheng, Zeng Bo, et al.Dielectric loss factor measurement based on Kaiser window spectral correction[J]. Transactions of China Electrotechnical Society, 2009, 24(5): 203-208. [22] 万全, 高云鹏, 罗志坤, 等. 基于Nuttall窗频谱校正的介质损耗因数测量[J]. 仪器仪表学报, 2010, 31(1): 15-20. Wan Quan, Gao Yunpeng, Luo Zhikun, et al.Dielectric loss factor measurement based on Nuttall window spectral correction[J]. Chinese Journal of Scientific Instrument, 2010, 31(1): 15-20. [23] 温和, 滕召胜, 曾博, 等. 基于三角自卷积窗的介损角测量算法及应用[J]. 电工技术学报, 2010, 25(7): 192-198. Wen He, Teng Zhaosheng, Zeng Bo, et al.Dielectric loss angle measurement algorithm and application based on triangular self-convolution window[J]. Transactions of China Electrotechnical Society, 2010, 25(7): 192-198. [24] 高云鹏, 李峰, 陈婧, 等. 基于Rife-Vincent窗频谱校正的介损因数测量[J]. 湖南大学学报(自然科学版), 2014, 41(2): 85-90. Gao Yunpeng, Li Feng, Chen Jing, et al.Dielectric loss factor measurement based on Rife-Vincent window spectral correction[J]. Journal of Hunan University (Natural Sciences), 2014, 41(2): 85-90. [25] 徐志钮, 律方成, 李和明. 加Blackman-Harris窗插值算法仿真介损角测量[J]. 高电压技术, 2007, 33(3): 104-108. Xu Zhiniu, Lü Fangcheng, Li Heming.Simulation analysis of dielectric loss angle measured by the Blackman-Harris window interpolation algorithm[J]. High Voltage Engineering, 2007, 33(3): 104-108. [26] 徐艳春, 刘宇龙, 李振华, 等. 基于六项余弦窗四谱线插值FFT的高精度谐波检测算法[J]. 电力系统保护与控制, 2016, 44(22): 56-63. Xu Yanchun, Liu Yulong, Li Zhenhua, et al.An accurate approach for harmonic detection based on 6-term cosine window and quadruple-spectrum-line interpolation FFT[J]. Power System Protection & Control, 2016, 44(22): 56-63. [27] 张俊敏, 刘开培, 汪立, 等. 基于四谱线插值FFT的谐波分析快速算法[J]. 电力系统保护与控制, 2017, 45(1): 139-145. Zhang Junmin, Liu Kaipei, Wang Li, et al.A rapid algorithm for harmonic analysis based on four-spectrum-line interpolation FFT[J]. Power System Protection & Control, 2017, 45(1): 139-145. [28] Dyer S A, Dyer J S.Cubic-spline interpolation[J]. IEEE Instrumentation & Measurement Magazine, 2001, 4(1): 44-46. [29] 朱青. 计算机算法与程序设计[M]. 北京: 清华大学出版社, 2009. [30] 王康, 滕召胜, 陈继斌, 等. 基于时域准同步的介损角快速测量算法[J]. 中国电机工程学报, 2015, 35(4): 873-881. Wang Kang, Teng Zhaosheng, Chen Jibin, et al.A fast dielectric loss angle measurement algorithm based on the time-domain quasi-synchronous sampling technique[J]. Proceedings of the CSEE, 2015, 35(4): 873-881. [31] Wang Kang, Teng Zhaosheng, Wen He, et al.Fast measurement of dielectric loss angle with time-domain quasi-synchronous algorithm[J]. IEEE Transactions on Instrumentation & Measurement, 2015, 64(4): 935-942.
2018, Vol. 33 
