基于小波变换和模糊逻辑的暂态电能质量扰动分类Classification of Transient Power Quality Disturbances Based on Wavelet Transform and Fuzzy Logic
刘慧芳;陈勇胜;王群;王成彪;徐炳吉;
摘要(Abstract):
针对暂态电能质量扰动现象的内在特征,提出了小波变换和模糊逻辑相结合的暂态电能质量扰动分类方法。该方法使用小波变换提取扰动的时间特征,将扰动持续时间、扰动幅度、扰动频率、电压变化率绝对值作为暂态电能质量扰动的特征向量,输入到4输入2输出的模糊逻辑推理系统,自动判别暂态电能质量的扰动类型及扰动强度。在Matlab平台上使用该方法对应用电磁暂态仿真工具EMTDC仿真得到的暂态电能质量扰动波形进行分析,效果良好,验证了该方法的有效性。
关键词(KeyWords): 暂态电能质量;小波变换;模糊逻辑
基金项目(Foundation):
作者(Author): 刘慧芳;陈勇胜;王群;王成彪;徐炳吉;
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DOI:
参考文献(References):
- [1]王晶,束洪春,陈学允.人工智能和数学变换用于电能质量的研究综述[J].继电器,2004,32(2):34-39.Wang Jing,Shu Hongchun,Chen Xueyun.A summary of AI&mathematics transform applied to power quality study[J].Relay,2004,32(2):34-39(in Chinese).
- [2]胡铭,陈珩.电能质量及其分析方法综述[J].电网技术,2000,24(2):36-38.Hu Ming,Chen Heng.Survey of power quality and its analysis methods[J].Power System Technology,2000,24(2):36-38(in Chinese).
- [3]Heydt G T,Fjeld P S,Liu C C,et al.Applications of the windowed FFT to electric power quality assessment[J].IEEE Trans on Power Delivery,1999,14(4):1411-1416.
- [4]Santoso S,Grady W M,Powers E J,et al.Characterization of distribution power quality events with Fourier and wavelet transforms[J].IEEE Trans on Power Delivery,2000,15(1):247-254.
- [5]Gu Y H,Bollen M H J.Time-frequency and time-scale domain analysis of voltage disturbances[J].IEEE Trans on Power Delivery,2000,15(4):1279-1284.
- [6]严居斌,刘晓川,杨洪耕,等.基于小波变换模极大值原理和能量分布曲线的电力系统短期扰动分析[J].电网技术,2002,26(4):16-19.Yan Jubin,Liu Xiaochuan,Yang Honggeng,et al.Analysis of short-term power system disturbance based-on modulo maximum principle and energy distribution curve of wavelet transform[J].Power System Technology,2002,26(4):16-19(in Chinese).
- [7]陈祥训.采用小波技术的几种电能质量扰动的测量与分类方法[J].中国电机工程学报,2002,22(10):1-6.Chen Xiangxun.Wavelet-based measurements and classification of short duration power quality disturbances[J].Proceedings of the CSEE,2002,22(10):1-6(in Chinese).
- [8]刘安定,肖先勇,邓武军.基于离散余弦变换和小波变换的电能质量扰动信号检测方法[J].电网技术,2005,29(10):70-74.Liu Anding,Xiao Xianyong,Deng Wujun.Detection and analysis of power quality disturbance signal based on discrete cosine transform and wavelet transform[J].Power System Technology,2005,29(10):70-74(in Chinese).
- [9]张宇辉,陈晓东,王鸿懿.基于连续小波的电能质量测量与分类[J].电力自动化设备,2004,24(3):17-21.Zhang Yuhui,Chen Xiaodong,Wang Hongyi.Continuous wavelet-based measuring and classification of short duration power quality[J].Electric Power Automation Equipment,2004,24(3):17-21(in Chinese).
- [10]王晶,束洪春,陈学允.动态电能质量的分形指数小波分析方法[J].中国电机工程学报,2004,24(5):40-45.Wang Jing,Shu Hongchun,Chen Xueyun.Fractal exponent wavelet analysis of dynamic power quality[J].Proceedings of the CSEE,2004,24(5):40-45(in Chinese).
- [11]刘晓芳,刘会金,柯定芳.基于小波变换和神经网络的暂态电能质量自动识别[J].供用电,2005,22(5):15-17.
- [12]Bonatto B D,Niimura T,Dommel H W.A fuzzy logic application to represent load sensitivity to voltage sags[C].8th International Conference on Harmonics and Quality of Power,Athens,1998.
- [13]Dash P K,Mishra S,Salama M M,et al.Classification of power system disturbances using a fuzzy expert system and a Fourier linear combiner[J].IEEE Trans on Power Delivery,2000,15(2):472-477.
- [14]Huang J S,Negnevitsky M,Thong D T.A neural-fuzzy classifier for recognition of power quality disturbances[J].IEEE Trans on Power Delivery,2002,17(2):609-616.
- [15]Santoso S,Powers E J,Grady W M,et al.Power quality assessment via wavelet transform analysis[J].IEEE Trans on Power Delivery,1996,11(2):544-549.