UHV输电暂态信号的动力学分析新方法

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摘要特高压交流输电线路故障的正确识别与快速切除对于保障整个系统的安全、稳定和可靠运行具有重要意义。通过PSCAD-EMTDC仿真, 在比较不同故障类型下故障相、非故障相最大过电流大小的基础上, 本文从动力学角度分析了故障信号混沌特征的变化规律。利用Duffing混沌系统对于环境噪声具有较好的抗干扰性的特点, 以检测到的故障信号作为该系统的摄动输入, 得到了不同故障类型下的相轨迹图, 再利用小波边缘检测技术提取到了各相图中的故障指纹信息。最后对某750kV输电线路的故障信号进行了识别, 结果表明, 该系统具有较好的故障识别能力, 验证了该方法的正确性。

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	李毅
	吴政球
	汪沨
	刘开培
	陆佳政

关键词 ：特高压, 线路故障, 动力学, Duffing混沌系统, 小波

Abstract：It is important to protect the entire power grid for security, stability and reliable operation through identifying fault correctly and removing it rapidly for UHV AC transmission line. By PSCAD-EMTDC simulation, on the basis of comparing maximum overcurrent of the fault phase and non-fault phase for different faults types, from view point of dynamics, this paper analyses the variation rule of chaotic characteristics for fault signals. Utilizing the better anti-interference characteristics of Duffing chaos system for environmental interference, phase trajectory diagrams under different fault types are obtained by using fault signals detected as the perturbation input of system, and then the finger mark fault information is extracted using wavelet edge detection technique for each phase diagram. Finally, different fault types are classified accurately by fault signals using Duffing chaos system for one 750kV transmission line. Results show that this detection method has preferable ability to identify faults, whose validity is verified.

Key words： UHV line fault dynamics Duffing chaos system wavelet

收稿日期: 2010-06-02 出版日期: 2014-03-20

PACS:	TM711
	TM726
	TM773

基金资助:湖南省科技计划项目(2011FJ3195)和湖南省科技厅项目(2012GK3143)资助。

作者简介: 李毅男, 1983年生, 博士研究生, 工程师, 主要从事电力系统分析与控制、高电压与绝缘技术等方面的研究。吴政球男, 1963年生, 博士, 教授, 博士生导师, 从事电力系统分析与控制, 分布式发电, 电力市场方面的研究。

引用本文:

李毅, 吴政球, 汪沨, 刘开培, 陆佳政. UHV输电暂态信号的动力学分析新方法[J]. 电工技术学报, 2012, 27(10): 44-51. Li Yi, Wu Zhengqiu, Wang Feng, Liu Kaipei, Lu Jiazheng. New Research Approach Using Dynamic Analysis for Ultra High Voltage(UHV)Transmission Transient Signal. Transactions of China Electrotechnical Society, 2012, 27(10): 44-51.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2012/V27/I10/44

[1] 尚秋峰, 杨以涵, 李士林, 等. Duffing振子信号检测方法用于配电网单相故障接地保护[J]. 电力系统自动化, 2004, 28(13): 64-67.
Shang Qiufeng, Yang Yihan, Li Shilin, et al. Duffing oscillator signal detection method applies to the single-phase to ground fault protection in distribution systems[J]. Automation of Electrie Power Systems, 2004, 28(13): 64-67.
[2] 李冬辉, 贾巍. 用混沌理论检测直流供电系统接地故障[J]. 高电压技术, 2005, 31(11): 79 -82.
Li Donghui, Jia Wei. application of chaos theory in grounding fault detection of DC power supply system[J]. High Voltage Engineering, 2005, 31(11): 79-82.
[3] Wang Guanyu, Chen Dajun, Lin Jianya, et al. The application of chaotic oscillators to weak signal detection[J]. IEEE Transactions on Industrial Electronics, 1999, 46(2): 442-444.
[4] Jimenez-Triana, A Tang, W K S. Chaos control in duffing system using impulsive parametric perturbations[J]. IEEE Transactions on Circuits and Systems, 2010, 57(4): 305-306.
[5] Zhen Zhao, Fu Li, Wang Mingxing, et al. Intermittent-chaos-and-cepstrum-analysis-based early fault detection on shuttle valve of hydraulic tube tester[J]. IEEE Transactions on Industrial Electronics, 2009, 59(7): 2764-2766.
[6] 杨红英, 叶昊. 基于混沌理论的动态系统故障检测研究与发展[J]. 自动化与仪器仪表, 2007, 01: 1-4.
[7] 王冠宇, 陶国良. 混沌振子在强噪声背景信号检测中的应用[J]. 仪器仪表学报, 1997, 18(2):209-212.
[8] 聂春燕, 石要武. 基于互相关检测和混沌理论的弱信号检测方法研究[J]. 仪器仪表学报, 2001, 22(1): 32-35.
[9] 王永生, 姜文志, 赵建军, 等. 一种Duffing弱信号检测新方法及仿真研究[J]. 物理学报, 2008, 57(4):2053-2056.
Wang Yongsheng, Jiang Wenzhi, Zhao Jianjun, et al. A new method of weak signal detection using Duffing oscillator and its simulation research[J]. Acta Physica Sinica, 2008, 57(4): 2053-2056.
[10] 赵彤, 李庆明, 陈平. OLTC振动信号特征提取的动力学分析方法[J]. 电工技术学报, 2007, 22(1): 42-45.
Zhao Tong, Li Qiongmin, Chen Ping. Dynamic analysis method for feature extraction of mechanical vibration signals of on-load tap changers[J]. Transactions of China Electrotechnical Society, 2007, 22(1): 42-45.
[11] 舒印彪, 张文亮. 特高压输电若干关键技术研究[J]. 中国电机工程学报, 2007, 27(31): 1-6.
Shu Yinbiao, Zhang Wenliang. Research of key technologies for UHV transmission[J]. Proceedings of the CSEE , 2007, 27(31): 1-6.
[12] 刘振亚. 特高压电网[M]. 北京:中国经济出版社, 2005.
[13] 柴济民, 郑玉平. 交流1 000 kV特高压输电线路距离保护特殊问题[J]. 电力系统自动化, 2007, 31(12): 55-59.
Chai Jiming, Zheng Yuping. Problems in the distance relay for 1 000 kV UHV AC transmission lines[J]. Automation of Electric Power Systems, 2007, 31(12): 55-59.
[14] 郭征, 贺家李, 王俊. 特高压长线路单相自适应重合闸的新原理[J]. 高电压技术, 2009, 35(5): 1005-1008.
Guo Zheng, He Jiali. Wang Jun, Research of single-phase self-adaptive reclosure for UHV long transmission lines[J]. High Voltage Engineering, 2009, 35(5): 1005-1008.
[15] 吕金虎, 陆君安, 陈士华. 混沌时间序列分析及其应用[M]. 武汉: 武汉大学出版社, 2002.