負荷波動 的英文怎麼說

中文拼音 [fùhébōdòng]
負荷波動 英文
fluctuation of load
  • 負 : Ⅰ名詞1 （負擔） burden; load 2 （虧損） loss 3 （失敗） defeat Ⅱ動詞1 [書面語] （背） carry on th...
  • 荷 : 荷名詞（蓮） lotus
  • 波 : Ⅰ名詞1 （波浪） wave 2 [物理學] （振動傳播的過程） wave 3 （意外變化） an unexpected turn of even...
  • 負荷 : [電學] load; charge; weight
  • 波動 : 1 （不穩定） undulate; fluctuate; unsettle; surge; rise and fall 2 [物理學] wave （motion）; wave...
  1. 2d - cad, 3d - cad cae, injection molding machines, 3dmeasurement machines, ultrasonic welding machines, high - frequency electromagnetic welders, hot stamping machines, silkscreen printing devices, caulking machines, automatic screw machines, det raw material - exclusive dryers, load testers

    2d - cad ， 3d - cad cae ，射出形成機， 3維測量機，超聲波焊著機，高頻電磁電焊機，熱沖壓機，絲印刷裝置，鉚合機，自動打釘機， det原料專用乾燥裝置，負荷試驗機。
  2. In view of this situation this article has conducted research to the design of metallurgy auxiliary biography with the frequency conversion table electrical machinery first multianalysis to the frequency changer and the frequency conversion table electrical machinery movement characteristic is carried out, the voltage waveform harmonious which the frequency changer outputs is big, attacks in a big way, and the voltage climbing rate reaches as high as 6600v / mu s which is 20 times ordinary sine alternating voltage, the rolling mill auxiliary biography table set the extremely strict request to the electrical machinery ; its movement frequency is very low, rate frequency in 8 - 20hz ; the velocity modulation scope is wide, the lowest movement frequency lowers to 1hz, and the starting number of times is quite frequently, each hour reaches as high as 600 - 800 time, the impact shoulders in a big way, the overload capacity request is high

    針對這一情況本文對冶金輔傳用變頻輥道電機的設計進行了系統研究。首先對變頻器和變頻輥道電機的運行特性進行詳細分析，變頻器輸出的電壓波形諧波大，沖擊大，電壓上升率高達6600v / s ，是普通正弦交流電壓的20倍;軋機輔傳輥道對電機提出了十分嚴格的要求:其運行頻率很低，額定頻率在8 - 20hz ;調速范圍寬，最低運行頻率低到0 . 5hz ，起動次數相當頻繁，每小時高達600 - 800次，沖擊負荷大，過載能力要求較高。
  3. It is discussed that the present harmonic analyzers do n ' t satisfy the requirements of china standard for harmonic measure of quick disturbance harmonic load. the measurement error brought about by the harmonic analyzers adopting ft or fft algorithm is analyzed. a cycle discrete fourier algorithm that should n ' t be effected by aperiodic component is presented, and the results of simulation show that it has higher accureacy

    本文對電力系統諧波的測量方法，數據處理及電力牽引負荷對電力系統的影響進行了研究，論述了目前國內外生產的諧波分析儀用於快速波動諧波負荷的測量不滿足國標的要求，分析了諧波分析儀普遍採用的ft或fft演算法所產生的測量誤差，提出了一種不受非周期分量影響的全周波離散傅里葉演算法，模擬結果表明精度好。
  4. Electromagnetic compatibility - limits - assessment of emission limits for fluctuating loads in mv and hv power systems

    電磁兼容限值中高壓電力系統中波動負荷發射限值的評估
  5. Many experts and researchers have made great efforts in a long time. this paper is from the study of theory, analysis the particularity of electrical tractor loads

    本文從理論探討的角度出發，深入了解了國內外對電牽引系統多諧波源隨機諧波電流疊加問題的動態，分析了電牽引負荷諧波的分佈特性。
  6. It satisfies the requirements of china standard ( gb / t 14549 - 93 ), the harmonic and negative sequence component leaded by the input of electrified railways traction load are measured in si yan qiao substation. this thesis mainly analyzes the effects on the electric elements, feeding system losses, protection system and automatic device, and proposes corresponding schemes according to the problems occurring in si yan qiao substation

    本文實測了瀘州石燕橋變電站電氣化鐵路牽引負荷注入電網的諧波和負序分量，著重分析了電力系統中電氣設備、供電網線損、繼電保護和自動裝置受電氣化鐵路諧波和負序的影響，並針對石燕橋變電站出現的問題提出了對策。
  7. For the sake of the research about hydroelectric interfere among machines, the article utilized the simulink in matlab as simulating tool, meanwhile established the simulating model about two high head diversion water turbines regulation system in violent fluctuating pressure sharing one head race tunnel and surge tank and one penstock. then calculated the load rejection transition process by means of the real parameters of a hydro power station, analysed the interfere of hydro power station safety and stable nenring brought by hydroelectric interfere and put forward a series of measures that lightening the hydroelectric interfere

    為了研究機組間的水力干擾，本文採用matlab下的simulink作為模擬工具，建立共用有壓引水管道、調壓井、壓力主管的兩臺高水頭引水式水輪機調節系統大波動時的模擬模型，引入實際電站的參數，對甩負荷過渡過程進行了模擬計算，分析水力干擾對電站安全、穩定運行所造成的影響，並提出了一系列減輕水力干擾的措施。
  8. This paper establishes the linear model of hydro - turbine and deducts its transfer coefficients. then the optimized operation parameters are gained in the frequency disturbance and load rejection simulation. through comparing dynamically, this paper analyses the impact on its dynamic performance if some governing system parameter changes

    在研究小波動情形時，即系統在穩定工作工況點附近小瞬變時，可以把非線性系統進行線性化處理;本文建立了水輪機調節系統的線性化模型，推導了其中的傳遞系數;對水輪機調節系統的頻率擾動和機組突甩負荷工況進行了模擬試驗，整定了最佳調節參數;通過動態比較，分析了調節系統參數改變對其動態性能的影響。
  9. The characteristics of power system development are as follows : the increasing of overall capacity of power station and capacity of a single generator, the prolonging distance of transmitting electricity, and loads far away from power source with intense fluctuation

    電力系統的發展的重要特徵是：電站總容量及單機容量增大，輸電距離延長，負荷遠離電源且波動劇烈。
  10. On the other hand, because of the fluctuating load, such as arc furnace and railway traction locomotive, the voltage of the network will frequently fluctuate and lead to voltage flash

    另一方面，現代配電網上用於冶煉的電弧爐和鐵路牽引機車等波動性負荷，會使電網電壓頻繁波動，造成電壓閃變。
  11. Abstract : the underground load characters in yinshan mine were analyzed. based on the technical features of various kinds of reactive compensation devices, it was proposed that low voltage capacitance dynamic compensation mode shall be adopted for compensating reactive power and lowering voltage fluctuation

    文摘:對銀山鉛鋅礦井下負荷性質進行了分析，根據各種無功補償裝置的技術特點，提出採用低壓電容動態補償方式對該礦井下無功進行補償和降低電壓波動。
  12. Effect on pressure in the vessels of east cryogenic system due to fluctuation of heat loads

    超導托卡馬克熱負荷波動對低溫系統液氦槽的影響
  13. It indicates from engineering applications that the working conditions of crushing equipments are extremely inclement because the load fluctuates considerably. the dangerous circumstance of overloading occurs abruptly when uneven charging or hard materials are loadrfinto the crushing equipment

    破碎設備作業工況極為惡劣，工作負荷波動性很大。常因入料不均或因破碎腔進入硬度極強的不可破碎物而出現突然的大幅度的超載險情。
  14. Thus clean factor has good adaptability to boiler load, coal quality, excess air coefficient, working medium flow, and boiler efficiency etc. the calculated result gained by inputting the data of history database of the object boiler validates the correctness and adaptability to boiler load of clean factor model

    基於穩態傳熱的清潔因子灰污監測模型，對鍋爐負荷、燃煤品質、過量空氣系數、各類工質流量、燃煤量和鍋爐熱效率等的波動變化有很好的適應性。以北侖電廠1 #爐歷史庫中數據為輸入數據，驗證了清潔因子模型的正確性和對穩定負荷的適應性。
  15. The water turbine regulation system is a complicate auto - controlling system, it ' s small fluctuation dynamic course means : when the water turbine regulation system is interfered by tiny disturbance of load or command signal, the change of different parameters in the system is less, we can thought they are subtle change near by the discussing conditions, so we can make each tache in the system linearization, that is, describe the dynamic specialty of each tache and the whole system by means of linear differential equation

    水輪機調節系統是一個復雜的自動控制系統，其小波動過渡過程是指水輪機調節系統在受到微小的干擾（負荷或指令信號擾動）時，系統中各參數的變化都較小，可以認為是在所討論工況點附近作微小變化，則可將調節系統各環節加以線性化，用線性微分方程式來描述各環節及整個系統的動態特性。
  16. This platform is then used to study the temperature distribution and fluctuation of module ' s wall, the fluctuations of thermal control system, temperature and humidity in the cabin for the short and long cycles of the thermal environment changes. this thesis suggests a temperature control method for cooling loops, a temperature and humidity control method of the cabin air and simulates their effectiveness

    用該平臺模擬了艙壁的溫度分佈及波動特點，研究了熱輻射環境的短周期和長周期波動及艙內熱負荷波動對熱控制系統及艙內空氣溫度、濕度造成的動態影響；給出了熱控迴路溫度控制方法，利用最佳去濕流量的概念提出了具有回熱流程的艙內空氣溫度、濕度控制方法，對控制效果進行了動態模擬。
  17. The paper point outs that how to distinguish load oscillation and rotor bar faults is still the essential problem up to now, and a method based on wavelet transform to solve the problem is proposed

    在電機轉子故障檢測中，診斷效果常受負荷波動的影響，本文提出了基於小波變換的負荷波動判定方法，它能明顯地區分出電機的轉子斷條與負荷波動，提高了轉子故障診斷的可靠性。
  18. In the modern power system, acute fluctuation of load lead to great difference of wave crest and trough, abundance non - linear load make severe aberrance of current and voltage wave. these factors make remarkable increase of error of energy metering and unrational billing

    現代電力系統中，負荷波動劇烈使負荷峰谷差值很大，大量的非線性負荷使電流、電壓波形畸變嚴重，這些因素使電能計量誤差顯著增大，並使計費不合理。
  19. Secondly, how to actualize economical operation of transformers in substations which load fluctuates frequently is analyzed. and the resolvent that the change time of operation mode of transformers in substations is confirm scientificly, according as the real - time data and the result of the short - term load forecasting, is bring forward

    分析了負荷波動較大的變電站如何實現變壓器實時經濟運行，提出了以短期負荷預測的結果為參照，以實時數據為依據科學地確定變電站變壓器運行方式改變時機的解決辦法。
  20. This article has discussed the control problem in a distribution substation and on the distribution line respectively. reactive power / voltage control in a substation using general approach usually results in the voltage of the second side being too close to the boundary. it will make the ability of enduring the variation of load in a system decrease a lot and become the threat of the system

    本文分別對配電系統中的變電站及配電線路的無功電壓優化控制問題進行了研究，採用常規方法進行變電站電壓無功控制時，往往使二次側電壓過于接近邊界而導致系統承受負荷波動的能力大大下降，成為系統安全運行的隱患。
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