voltage sag 中文意思是什麼
voltage sag
解釋
電壓驟降-
Transient power quality issues have been becoming extrusive, such as voltage well, voltage sag and voltage interruption, and bring customers amount of loss
暫態電能質量問題越來越突出，如電壓跌落、驟升、短時斷電等現象經常發生，給用戶帶來了很大的損失。 -
Dynamic voltage restorer ( dvr ) is an important member of custom power family. it can compensate voltage harmonic, fliker, sag, swell, unbalance, and has the advantage of high performance / price, so it is necessary to investigate the theory and operation of dvr
動態電壓恢復器（ dynamicvoltagerestorer ? dvr ）是custompower家族的一個重要成員，它可以補償電壓的跌落、突升以及諧波，具有高性價比的優點。 -
Then, this thesis concerns with the wavelet transform and its application in power system and compare the deficiency vs strongpoint between the fourier transform, short - time fourier transform. this article point out that wavelet transform fit for non - stationary signals analysis and put it into the measurement of voltage sag. based on the comparion of several algorithm of voltage sag measurement in the literature, the thesis put up a new voltage sag measurement algorithm - - - combination of wavlet transform and root - mean - square. the thesis validate the algorithm according to simulation and actual measuring data
並將小波分析用於電壓凹陷的測量中。在詳細對比了現有文獻上已有的幾種凹陷檢測演算法的基礎上，提出了有效值與小波分析相結合的電壓凹陷測量演算法，文章對小波函數的選取，處理時的去噪，分解尺度的確定等問題進行了詳細的論述，從而實現了本文提出的電壓凹陷定義的測量。根據實測數據和模擬數據，對該演算法進行了驗證，證明該演算法是可行的。 -
2 what does area of vulnerability mean ? and how important is it for voltage sag estimation
何謂易受影響區域？和電壓驟降有何相關性？ -
Such problems as the attenuation of dc elements and sine waveform, voltage sag and frequency deviation should be taken into account in order to analyze the transient process in the power system
要分析電網的暫態特性，還必須考慮衰減直流分量和衰減正弦波，以及電壓缺口和頻率偏移等問題。 -
In the first, the paper study the short duration variations of rms and discuss the voltage sag emphatically. this thesis put up a new definition of voltage sag, which confirm the duration precisely
本文首先研究了短時電壓變動現象，對電壓凹陷標準進行了較深入的討論，提出了一種新的電壓凹陷定義。 -
The voltage sag, one of the most important dynamic power quality disturbances, may cause the misoperation of an electric power system ' s sensitive loads and cost a lot of money
作為現代電能質量的重要部分，電壓瞬間跌落產生的危害日益嚴重。巨大經濟損失，使得電壓瞬間跌落問題在全球尤其是發達國家受到廣泛的關注。 -
Summarization of voltage sag
電壓凹陷問題綜述 -
1 please illustrate voltage sag and interruption solution alternatives and their relative cost
請描述出電壓驟降和斷電解的決方法？和所造成的損失？ -
The experiment of researching character of the transducer during voltage sag is carried through, which shows the application value
最後以變頻器經受電壓凹陷特性的研究示例說明該裝置的應用價值。 -
In addition, it will limit the expected voltage sag during the fault and improve the system power quality
此外，它還能很好的解決故障期間配電網的母線電壓下凹（ voltagesag ）問題，從而改善配電網的電能質量。 -
Voltage sag, as one of the important aspect of power quality, its research is just underway in our country, which has no criterion related
而作為電能質量中的一個重要方面電壓凹陷，在我國的研究則剛剛起步，至今沒有相應的國家標準。 -
Moreover, owing to rapid use of large numbers of nonlinear or impactive loads in power system, many power quality problems will be caused, such as voltage sag, swell, unsymmetry, flicker, fluctuation, harmonic and so on
然而，隨著電網中沖擊性、非線性負荷的不斷增加，導致電網電壓波形發生畸變、波動、閃變和三相不平衡等電能質量問題卻越來越嚴重。 -
This thesis presents the basic concepts, the characterization of voltage sag, which includes magnitude, duration, and phase - angle jumps. the basic voltage sag analytical techniques based on circuit theory and reliability theory is followed
本文給出了電壓瞬間跌落的基本概念、描述特徵及其統計計算的基本方法，分析了電壓瞬間跌落的概率分佈、對電力系統和用戶的巨大危害。 -
The method has perfect effect on calculating the voltage swell and sag, voltage notch and frequency deviation. numerous simulations also prove the effectiveness of the method
對于電壓驟升驟降、電壓缺口以及頻率偏移，該計算方法也有很好的效果，大量的模擬結果證明了這一點。
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