| 基于分形理论的内部过电压识别技术 |
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| 引用本文： | 连丽珍,曹建玲,苏小芳,徐海枝.基于分形理论的内部过电压识别技术[J].武汉大学学报(工学版),2012(2):225-228. |
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| 作者姓名： | 连丽珍 曹建玲 苏小芳 徐海枝 |
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| 作者单位： | 武钢股份公司设备部;北京精密机电控制设备研究所;武汉大学电气工程学院;南宁职业技术学院机电工程学院 |
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| 基金项目： | 国家自然科学基金项目(编号:50807041) |
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| 摘 要： | 电力系统中的内部过电压类型多种多样,其产生原因错综复杂.目前,对过电压智能化分析的整体水平还不高,数据的分析只能依靠人工的方法,由生产技术人员凭经验并依据过电压波形的时间、幅值、频率等参数进行分析.但仅仅依靠这几个参数,有时不能对内部过电压进行完全正确的定性.对常见的几种内部过电压进行ATP-EMTP(电磁暂态计算软件)仿真,并提出基于分形理论的过电压信号识别,计算出过电压波形的分形维数.仿真结果表明,随着过电压发生条件的不同及参数的变化,同种过电压的分形维数在一定的范围之内;不同种类的过电压的分形维数在不同的范围.
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| 关 键 词： | 过电压 分形维数 电磁暂态计算 识别 |
Internal overvoltage recognition technology based on fractal theory |
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| LIAN Lizhen,CAO Jianling,SU Xiaofang,XU Haizhi.Internal overvoltage recognition technology based on fractal theory[J].Engineering Journal of Wuhan University,2012(2):225-228. |
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| Authors: | LIAN Lizhen CAO Jianling SU Xiaofang XU Haizhi |
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| Affiliation: | 1.Equipment Department of Wuhan Iron and Steel Company Limited,Wuhan 430085,China; 2.Beijing Precision Mechanical and Electrical Control Equipment Research Institute,Beijing 100076,China; 3.School of Electrical Engineering,Wuhan University,Wuhan 430072,China; 4.College of Mechanical and Electrical Engineering,Nanning College for Vocational Technology,Nanning 530008,China) |
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| Abstract: | There are many kinds of overvoltages and the reasons for these are different.At present,the only way to analyze the overvoltage data are relying on production and technical personnel,who analyze it rely on experience and the time,amplitude,frequency of overvoltage waveform.But sometime the overvoltages can’t be determined only according to these parameters.Several common internal overvoltages are simulated by ATP-EMTP(alternative transients program-electormagnetic transient program) and proposed to calculate the fractal dimensions of overvoltage signal waveform according to fractal theory for the first time.The fractal dimensions are calculated from the simulation results.The simulation and fractal dimension calculation results show that the fractal dimensions of the same kind overvoltage existed in a certain range;the ranges of fractal dimensions are different if the overvoltages are different. |
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| Keywords: | overvoltage fractal dimension electromagnetic transient program recognition |
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