電漿設備電源供應系統之電力品質改善研究

Study of Quality Improvement on Power System of Plasma Generators

殷興邦(Hsing-Pang Yin)

指導教授 ： 王順源

國立臺北科技大學/電資學院/電資碩士在職專班研究所/碩士(2012年)

摘要

隨著我國高科技產業蓬勃發展，各式電力的需求亦隨著產業製程的不斷精進而逐漸增加，而其中電力電子裝置所產生之諧波而引起電力劣化的問題己逐漸受到重視。在配電系統中，功率半導體切換元件的大量應用，尤其是系統中各種交直流電源轉換器，使配電系統中的電源品質受到很大的諧波污染。為了消除這些諧波，透過電力品質監測儀來量測科技廠電力品質狀況，包含諧波、電壓閃爍、電壓驟降、電壓陡升、甚至電力中斷等電力狀況量測結果顯示，工廠配電系統問題中諧波污染頗為嚴重，這將使得製程設備有時受制於諧波的問題而無法運轉於理想的狀態。
本文依據電力諧波理論，使用電力諧波量測儀表，實際量測工廠配電負載，並由筆記型電腦記錄諧波電流及諧波電壓值。依據已知負載設備，驗證電力諧波理論對設備產生諧波之現象，並以數學輔助設計軟體建立諧波分析之數學模型，並利用此模型分析負載設備造成之諧波電壓及電流。首先利用數學模型分析諧波成份及電壓不平衡的程度。然後針對配電系統要求及設備設計之規格，依據現場資料研判諧波及電壓不平衡是否需要改善。當有必要改善時，除考慮諧波之階次之外尚須配合工廠的空間限制，故此處選擇安裝二階阻尼濾波器，至於電壓不平衡的問題主要還是要做現場的三相電源配線換位工程。
最後本文提出兩個改善實例，經由這兩個實例驗證可證實本文所提出的分析方法、二階阻尼濾波器及三相電源配線換位確實可改善諧波及電壓不平衡的問題進而達到設備正常運轉要求。

關鍵字

電力品質 ； 諧波 ； 二階阻尼濾波器

並列摘要

Harmonic current distortion has become a major power quality problem in recent years. This is mainly due to the introduction of nonlinear loads, especially power electronic converters adopted in the power systems. In the meantime, they induce harmonic pollution problems. The equipment might not operate normally due to the effect. In order to reduce the harmonic pollution problems and ensure the quality of the power supply, this research measures a high-tech factory's power quality including the harmonics, flicker and voltage unbalance ratio measurement.
This thesis in accordance with power harmonic theory to use as harmonic and power meter to measured the load of factory. Use personal computer to record the data of harmonic current and voltage. To test and verify harmonic theory with understand equipment known. We could analyze the harmonic contents and the voltage unbalance by using the mathematical model of the article. We could judge if we improve harmonic and voltage unbalance situation from field data according to the requirement of power system and production specification. When it is necessary to improve, we use 2nd order damping filter as solution for factory equipment. In addition to consider harmonic improvement, the limited space is also a challenge. The 2nd order damping filter could meet both requirements. With regard to voltage unbalance problem, it is necessary to do transposition power cable in the field.
Finally we collected two cases in this thesis. We proved that analysis method that we mentioned in this article is useful through those cases. And we verified whether we solve the problem by using 2nd order damping filter and transposition power cable through the same mathematician’s model.

並列關鍵字

Power quality ； Harmonics ； 2nd order damping filter

參考文獻

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