voltage criterion 中文意思是什麼
voltage criterion
解釋
電壓標準-
At the present time, where to set shunt capacitor is based on it where to benefit overhaul and running. the criterion is whether the voltage acheieves the national standard. it is based on engineering actuality and tries gaining more practical ways and program by linking theory with practice
本文從工程實際出發，把多年工作經驗與控制理論結合起來，力求為設計及運行管理人員提供簡便實用的配置方法及程序，並運用控制理論對無功補償容量、位置進行優化，力求能得到把理論性和實用性結合起來的方法和程序。 -
As far as time cost and accuracy are concerned, this criterion based on waveform discernment is superior to the traditional one based on the transmission line voltage amplitude sampled after breakers work and has been verified its exactness by dynamic emulation
所提判據在時間和準確性上要優于傳統的基於故障后線路開關開斷后故障線路殘壓幅值的判別法，並經動態模擬驗證了其正確性。 -
The main job of this research is : ( 1 ) analyze the operation situation of power system during faults ; pay attention to the traveling wave on the three - phase transmission line ; study the equation of voltage on three - phase transmission line with impedance capacitance coupling between phases ; contact the voltage on any point with the fault voltage, study the singularity of the voltage signal in fault point, and make it to be the base of the new fault detection method ; ( 2 ) apply the singularity detection theory based on wavelet analysis to the power system faults detection, give a complementary criterion to current fault detection criterion, study how to select the basic wavelet, how to filter noise, how to detect the singular point or fault point, and finally give a total solution. the simulations prove it to be a quick, correct and effective fault detection method
本文的主要工作有： （ 1 ）分析電力系統在發生故障時的運行狀態，尤其對三相傳輸線上的故障行波進行了分析和研究，推導了考慮相間耦合的三相傳輸線電壓方程，並將傳輸線上任一點的電壓與故障點電壓建立起聯系，得出了傳輸線上電壓信號在故障點處的奇異性，並以此作為構造新的故障檢測演算法的理論基礎； （ 2 ）將基於小波變換的信號奇異性檢測理論運用於電力系統故障檢測中，針對目前相關研究的不足，提出了電力系統故障檢測判據的補充判據，通過對基本小波的選擇、除噪措施、信號奇異點也即故障點的檢測方法所作的分析，給出了一個可行的解決方案；模擬研究表明：這是一個快速、準確、有效的故障檢測演算法。 -
The conclusion that ez is more important during the breakdown of rf ion source is made out by comparing ez and e 6 before breakdown, and then, the breakdown criterion of rf ion source is deduced, and the relation between breakdown voltage and pressure is analyzed too
通過比較擊穿前高頻電場的軸向和幅向分量，得出了軸向電場在高頻離子源擊穿中起主要作用的結論，並進而推導出了高頻離子源的擊穿判據，得出了氣體擊穿時離子源擊穿電壓和放電管內氣壓的關系。 -
In addition, the characteristics of critical current of hts tapes in ac applied field and that of voltage - current curve when transport ac currents were studied. the problem on the criterion of ac current carrying capacity of hts tape was discussed, and some suggestion on the criterion of ac current carrying capacity were proposed
另外，對高溫超導帶材在交流背景磁場下的直流臨界電流特性，及超導體傳輸交流時的流?壓曲線特性進行了實驗研究，並對高溫超導帶材的交流最大載流能力的測量判據問題進行了探討，給出最大交流載流電流測量判據的建議。 -
Applying the criterion of the work state of operational amplifier, the stable operating condition of voltage - controlled voltage source filter 2 is proved in detail and the condition that the filter can be used as the sinusoidal oscillator is given
摘要利用運放工作狀態的判據，系統地證明? 4種二階壓控電壓源型濾濾器穩定工作的條件，同時給出了用作正弦波振蕩器的條件。 -
The twelve kinds of modes and equivalent circuits within one high frequency switching period are carefully analyses. by using the state - space averaging approach, the converter ' s averaging model is presented, the output characteristic curve and design criterion of key circuit parameters such as output voltage, filtering inductance, common conduction time, uni - polarity spwm waveform ' s duty cycle etc are given
詳細分析了這類變換器在一個高頻開關周期內的十二個工作模式及其等效電路。採用狀態空間平均法建立了變換器平均模型，獲得了輸出電壓、濾波電感電流、共同導通時間、單極性spwm波占空比等關鍵電路參數的設計準則和變換器的外特性曲線。 -
The twelve kinds of modes and equivalent circuits of this inverter with high frequency link within one high frequency switching period are carefully analyzed ; by using the state - space averaging approach, the inverter ’ s averaging model is presented, and the design criterion of key circuit parameters and the output characteristic curve are given ; the analyses of the system stabilization and the mathematic analyzes of the principle of high - frequency - link of this inverter have also be done. prototypes for 1kva 270v 10 % dc / 115v400hzac uni - polarity phase shifting controlled bi - directional voltage mode inverter with high frequency link is designed
以全橋橋式拓撲為例，論述了雙向電壓源型高頻環節逆變器單極性移相控制的原理、逆變器在一個高頻開關周期內的十二個工作模式及其等效電路;採用狀態空間平均法建立了逆變器平均模型，獲得了這類逆變器的關鍵電路參數的設計準則和外特性曲線;分析了系統穩定性，並對逆變器高頻環節原理進行了數學分析。 -
The twelve kinds of modes and equivalent circuits of voltage mode ac - ac mode ac / ac converters with high frequency link within one high frequency switching period are carefully analyses. by using the state - space averaging approach, the converter ' s averaging model is presented, and the design criterion of key circuit parameters and the output characteristic curve are given
以全橋橋式拓撲為例，論述了單極性移相控制的原理、單極性移相控制電壓源交?交型高頻環節ac ac變換器在一個高頻開關周期內的十二個工作模式及其等效電路。採用狀態空間平均法建立了變換器平均模型，獲得了關鍵電路參數的設計準則和變換器的外特性曲線。 -
( 4 ) based on module theory, the operation state analysis of voltage - feed zcs buck converter has been simplified and the time - discrete mathematic modeling of dcm mode has been setup. ( 5 ) the stability operation parameter range has been decided according to the stability criterion, and the analysis of influent of resonance inductance and capacitance to converter ’ s chaos character is carried out
（ 5 ）根據系統穩定性判據確定了穩定工作區域，得出主要元件參數的穩定工作范圍，設計了電壓反饋控制buck變換器的模擬電路並根據模擬結果分析了諧振元件的加入對于變換器運行穩定性和混沌特性的影響。 -
Comparison analysis between voltage changes in v -, p - space and common curves, the criterion of impedance modul is made. and it is a good supplement to the space analysis method. they are the three spaces of the ternary analysis method
將電壓運行狀態在v -和p -空間上的變化同電壓穩定常用的p - v曲線和阻抗模判據進行了比較分析，是對p - v空間分析方法的有益補充，共同組成三元分析方法的三個分析空間。 -
Reactive power are calculated using the new algorithm. on the basis of analyzing different kinds of control strategies of var compensation, the paper applies the criterion of voltage and var to control switching and illustrates a improved mode of switching capacitor which can prevent the switched - capacitor from the impacting of instantaneous rush currents by means of zero - crossing triggering of scr components, and can realize auto - tracking var and auto - switching shunt capacitor bank. initial operating parameters are stored in information flash memory of the mcu using flash self - programming technique in order to decrease complexity of the circuit and improve stability
高壓智能無功補償控制器以flash型16位單片機msp430f149為控制核心，採用了一種相角實時測量的新演算法，並在此基礎上計算出了功率因數、有功和無功，減少了運算量提高了精度；在分析了各種無功補償控制策略的基礎上，以母線電壓和無功功率復合判據控制投切，並提出一種改進的電容器投切方式? ?暫態投切控制晶閘管過零觸發，避免了電容器投切時的電流沖擊；穩態運行時接觸器替代晶閘管，實現無功補償的自動跟蹤和電容器的自動投切，解決了投切時的暫態電流沖擊和穩態時可靠運行的難題；控制器的原始運行參數採用flash自編程技術，將其保存在msp430f149片內的信息flash中，簡化了硬體電路，大大提高了系統的可靠性。 -
The recursive criterion of transient current protection based on mallat wavelet transform is presented in order to meet the real - time demands. the reserch shows deficiency existed in the prevenient principle of transient current protection, so a new improved scheme of transient current protection is proposed. the characteristics of transient protection at different bus distribution capacitance is also analysed in this thesis. the study shows that operate of transient protection is correct when the bus distribution capacitance change. other conclusion include : the trip of transient protection must be locked when the power circuit breaker of transimission line operated, because the trip is incorrect at this time ; the features of transient current and it ' s energy is different between the fault and thunder over - voltage in transimission line, and them can be identified ; the ratio of high frequency component of current in serise capaciters compensation line, svc and hvdc system is far little than fault transient current, so all of them do not affect the working of trasient current protection
應用功率譜估計方法討論了故障高頻暫態噪聲信號在頻率軸上的分佈情況，利用功率譜分析結果實現的非參數化系統辨識方法研究了母線分佈電容對電流高頻暫態信號的衰減特性。論文的後半部分（第五，六，七章）著重分析了現有基於故障電流的暫態保護原理和判據存在的問題，提出了新的實現方案，並討論了暫態電流保護的運行性能。利用多分辨分析和小波分解快速演算法構成的遞推暫態保護判據，可以準確區分故障線路和非故障線路，實現超高速暫態電流保護，計算更為簡單方便，計算速度更快。 -
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。 -
The paper met the need of national rural power system changing project, in order to improve the operation levels of the rural power system and analysize rural small - scale generator ' s electric parameters after they were breakdown. we cooperated with coslight electric group of harbin, according to the corresponding standard of trouble dynamic record technological criterion of power system which was issued by the country, developed a kind of fault recording system which was suitable for rural small - scale generating set and low - voltage transformer substation of our country
本文針對國家農網改造工程進一步深入的需要，為提高農村電網的運行水平，為分析農村小型發電機故障后其電氣參量暫態變化過程，而與哈爾濱光宇電氣集團合作，按照國家頒布的電力系統故障動態記錄技術準則的相應標準，研製了一種適用於我國農村小型發電機組及低壓變電站的故障錄波系統。
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