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研究生:黃柏嘉
研究生(外文):Bo-Chia Huang
論文名稱:以類神經網路為基礎之諧波分析訊號處理技術
論文名稱(外文):A Neural Network Based Signal Processing Technique for Harmonic Analysis
指導教授:張文恭
指導教授(外文):Gary W. Chang
學位類別:碩士
校院名稱:國立中正大學
系所名稱:電機工程所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2006
畢業學年度:94
語文別:英文
論文頁數:87
中文關鍵詞:類神經網路適應性總性神經元Widrow-Hoff法則諧波分析
外文關鍵詞:ADALINENeural NetworkWidrow-Hoff delta ruleHarmonic analysis
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  • 被引用被引用:1
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  • 下載下載:65
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由於電力系統中非線性負載使用量的逐漸增加,使得諧波問題 逐漸受到重視。諧波會造成輸電系統在傳輸的過程中額外的損失,並且會減短電力設備的使用壽命。
由於頻域分析方法計算速度快,方法簡易,因此應用上最為廣泛,大多數的量測儀器多以快速傅立葉轉換(Fast Fourier Transform, FFT)作為基礎。但是,若信號特性不符合FFT的使用限制,在頻率變動以及頻率解析度不足情況下,分析結果將受到洩漏效應與欄柵效應影響而產生誤差。雖然可以增加分析訊號的取樣值來改善上述的影響,但這樣會減低運算效能。
綜合上述理由,本文提出以時域分析的以類神經網路為基礎諧波訊號處理技術,與傳統權重更新演算法(Improved Widrow-Hoff delta rule)比較,本文提出Levenber-Marquardt method具有計算速度快的優點,同時亦可提高分析結果的準確度及鑑別度,以評估訊號含有各個諧波成分。最後,利用Matlab/Simulink套裝軟體,並與傳統的方法模擬結果相互比較來加以驗證本文方法之有效性與實用性。
With the widespread use of nonlinear loads in the power system, the problems associated with harmonics are of great concern. Harmonics cause extra power losses in the transmission system and decrease the life of power devices.
The frequency-domain methods have been widely used for the signal processing because of its computational efficiency. In addition, most power meters adopt FFT-based algorithm to analyze the harmonics and to show the frequency spectra. However, the FFT-based algorithm is less accurate if the system frequency varies and the frequency resolution decreases. The analytic results will show errors caused by the leakage and picket-fence effects. Although increasing the number of sampling data can mitigate the undesired effects, this will impede the computational efficiency.
According to aforementioned facts, this thesis proposes a neural network based signal processing technique with Levenberg-Marquardt method for the weight update rule in the harmonic analysis. The proposed weight update rule is then compared with improved Widrow-Hoff delta rule. The Levengerg-Marquardt method estimates each frequency components in the measured signal. Not only is calculation time reduced, but also the result is with a better accuracy. Finally, the thesis applies Matlab/Simulink package software to simulate results that compare with those obtained by a conventional method to demonstrate the usefulness of the proposed method.
Acknowledgments................................................. I
Table of Content................................................II
List of Figures.................................................IV
List of Tables..................................................IX
Abstract........................................................ X

Chapter 1 Introduction.......................................... 1
Chapter 2 Harmonic Problems and Mitigation Strategies........... 3
2.1 Harmonics Theories...................................... 3
2.2 IEEE-519 Distortion Limits.............................. 4
2.2.1 Harmonic Current Distortion Limits................ 4
2.2.2 Harmonic Voltage Distortion Limits................ 5
2.3 Source and Effects of Harmonics............................. 6
2.3.1 Harmonic Sources.......................................... 6
2.3.2 Effects of Harmonics on Power System Components........... 7
2.4 Solutions for Harmonic Problems............................. 9
2.4.1 Equipment for Mitigating Harmonic Currents................10
2.4.2 Passive Filters and Active Filters........................11
Chapter 3 Review of Optimization Theory and Neural Network Approach on
Power Quality Analysis..........................................14
3.1 Unconstrained Nonlinear Optimization Methods............14
3.1.1 Steepest Descent Method...........................14
3.1.2 Newton’s Method..................................15
3.1.3 Levenberg-Marquardt Method................................15
3.2 Constrained Nonlinear Optimization Methods..................16
3.2.1 Lagrange Multiplier Method............................17
3.2.2 Kuhn-Tucker Conditions................................18
3.3 Neural Network Architectures and Learning Rules.............18
3.3.1 Adaptive Linear Element...........................19
3.4 Harmonic Analysis with ADALINE..............................21
Chapter 4 Simulation Results....................................25
4.1 Utilizing Matlab/Simulink Modeling ADALINE Structure....25
4.2 Results Obtained by Using Matlab/Simulink Simulation........28
Chapter 5 Conclusions and Future Works..........................67
5.1 Conclusions.............................................67
5.2 Future works............................................68
References......................................................69
Vita............................................................71
[1] P. G. Cummings, “Estimating effect of system harmonics on losses and temperature rise of squirrel-cage motors,” IEEE Transactions on Industry Applications, Nov./Dec. 1986, pp. 1121-1126.
[2] D. E. Rice, “Adjustable speed drive and power rectifier harmonics – their effect on power system components,” IEEE Transactions on Industry Applications, IA-22 (1), Jan./Feb. 1986, pp. 161-177.
[3] M. Samotyj, “End-use power quality,” EPRI Journal, vol. 14, March 1989, pp. 40-42.
[4] L. Lamarre, “Problems with power quality,” EPRI Journal, vol. 16, July/Aug. 1991, pp. 14-23.
[5] J. Arrillaga, D. A. Bradley, P. S. Bodger, “Power System Harmonics,” John Wiley & Sons, New York, NY, 1985.
[6] J. Arrillaga, N. R. Watson, S. Chen, “Power System Quality Assessment,” John Wiley & Sons, New York, NY, 2000.
[7] IEEE Recommended Practices and Requirements for Harmonic Control in Electric Power Systems, IEEE Std. 519-1992, 1993.
[8] M. R. G. Meireles, P. E. M. Almeida, Marcelo Godoy SimÕes, “A Comprehensive Review for Industrial Applicability of Artificial Neural Networks,” IEEE Transactions on Industrial Electronics, Vol. 50, NO. 3, June 2003, pp. 585-601.
[9] J.-S. R. Jang, C.-T. Sun, E. Mizutani, Neuro-Fuzzy and Soft Computing, Pearson Education Taiwan Ltd., September 2004.
[10] P. K. Dash, D.P. Swain, B. R. Mishra, S. Rahman, “Power Quality Assessment Using an Adaptive Neural Network,” Power Electronics, Drives and Energy Systems for Industrial Growth, Vol.2, Jan 1996, pp. 770-775.
[11] P. K. Dash, D. P. Swain, A. Routray, A. C. Liew, “Harmonic Estimation in a Power System Using Adaptive Perceptrons,” IEE Proc.-Gener. Transm. Distrib., Vol. 143, No. 6, November 1996, pp. 565-574.
[12] P. K. Dash, D.P. Swain, A. C. Liew, S. Rahman, “An Adaptive Linear Combiner For On-Line Tracking of Power System Harmonics,” IEEE Transactions on Power Systems, Vol.11, No.4, Nov. 1996, pp. 1730-1735.
[13] F. M. Ham, I. Kostanic, Principles of Neurocomputing for science & Engineering, McGraw-Hill Companies, Inc., 2001.
[14] N. S. Rau, Optimization Principles: Practical Applications to the Operation and Markets of the Electric Power Industry, John Wiley & sons, Inc., 2003
[15] P. K. Dash, S. K. Panda, B. Mishra, D. P. Swain, “Fast Estimation of Voltage and Current Phasors in Power Networks Using an Adaptive Neural Network,” IEEE Transactions on Power Systems, Vol. 12, No. 4, November 1997, pp. 1494-1499.
[16] R.E. Shatshat, M. kazerani, M. M. A. Salama, “On-Line Tracking and Mitigation of Power System Harmonics Using ADALINE-Based Active Power Filter System,” IEEE Electrical and Computer Engineering, Vol. 4, May 2004, pp. 2119-2124.
[17] 張斐章、張麗秋、黃浩倫,”類神經網路理論與實務”,東華書局,2003
[18] 汪惠健,”類神經網路設計”,東華書局,2004
[19] M. T. Hagan, H. B. Demuth, M. Beale, Neural Network Design, Thomson Publishing Inc., 2001.
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