暫時穩定 的英文怎麼說

中文拼音 [zhànshíwěndìng]
暫時穩定 英文
temporary stabilization
  • 暫 : Ⅰ形容詞（時間短） short; momentary Ⅱ副詞（暫時） temporarily; for the moment; for the time being
  • 時 : shí］Ⅰ名1 （比較長的一段時間）time; times; days:當時at that time; in those days; 古時 ancient tim...
  • 穩 : 形容詞1 （穩定; 穩當） steady; stable; firm 2 （穩重） steady; staid; sedate 3 （穩妥） sure; rel...
  • 定 : Ⅰ形容詞1 （平靜; 穩定） calm; stable 2 （已經確定的; 不改變的） fixed; settled; established Ⅱ動詞...
  • 暫時 : temporary; transient; for the time being
  • 穩定 : 1 （使穩定） stabilize; steady 2 （穩固安定） stable; steady 3 （物質的性能不易改變的作用） stabi...
  1. But neither can two great and powerful groups of nations take comfort from our present course - - both sides overburdened by the cost of modern weapons, both rightly alarmed by the steady spread of the deadly atom, yet both racing to alter that uncertain balance of terror that stays the hand of mankind ' s final war

    可是這兩個強有力的國家集團，誰也不能對當前的趨勢放心雙方都因現代武器的代價而感到不勝負擔，雙方都對于致命的原子力量不斷發展而產生應有的驚駭，可是雙方都在競謀改變那不穩定的恐怖均衡，而此種均衡卻可以暫時阻止人類最後從事戰爭。
  2. Here the front stabilized for the time being.

    在這里，戰線暫時穩定下來。
  3. The stability of electric power system has been being focused for a long time toprevent a power system from losing synchronism after sudden fault ， researchers have done much work and got many accomplishments this paper applied the direct feedback linearization ( dfl ) technique on the power system ， a strong nonlinear system simulation results by matlab proved this method efficiency main works and results are as follows ： this paper compared some existing methods in excitation control ， fast valve control and coordinated control respectively, analyzed the developments and actuality of nonlinear control research in brief, illustrated why ransient stability could be greatly improved by using the fast valve control in chapter 3 ， indicated the importance of coordinated control farther this paper introduced the inverse system theory, based on which ， discussed the dfl theory, pointed out which had consistency with the inverse theory, expanded the dfl theory combined the idiographic model equations ， made which adapt to the model of a single machine - infinite bus power system this paper referenced abundance articles and educed a set of equations ， which could describe the dynamical process of excitation and fast valve control for synchronous generators in the equations ， there were several very important parameters of power system - - rotor angle ( ) ， rotor speed ( ) ， generator q axis voltage ( eq ) ， transient voltage ( e ' q ) ， active power ( pe ) ， mechanical input power ( pm ) ， valve opening ( ) ， generator terminal voltage ( vt ) ， based on the model ， nonlinear coordinated controller and terminal voltage optimal controller have been designed by using the expanded dfl theory and lq optimal control theory the simulation results showed that the controller could keep power system transiently stable under the effects of a symmetrical 3 - phase short circuit fault ， which achieved better postfault regulation compared with another two routine methods ， one is the proportion excitation controller and proportion fast valve controller, the other is the proportion excitation controller and the optimal fast valve controller, which could exert good performance when met 1ittle disturbance either

    在介紹逆系統理論的基礎上，詳細介紹了dfl理論，通過比較闡明了dfl理論其本質是逆系統方法的一類，並結合具體課題推導出的模型方程將dfl理論進行了擴展，使之適應于電力系統這個強非線性對象。通過參考大量的書籍文獻推導出一套實用的可將大型汽輪發電機勵磁與汽門綜合起來進行控制的模型方程，此模型方程涵蓋了電力系統中特別引人注目的幾個量- -轉子角、轉子轉速、發電機q軸電勢eq 、暫態電勢e ' q 、有功功率pe 、機械功率pm 、汽門開度、機端電壓vt ，在此基礎上建立了實用的電力系統簡化的數學模型，並將擴展的dfl理論應用於此模型系統，結合線性二次型最優控制理論設計出大型汽輪發電機的非線性綜合控制器及機端電壓最優控制器，通過模擬實驗與採用常規的按電壓偏差進行調節的比例式勵磁控制器+汽門比例控制及採用常規的按電壓偏差進行調節的比例式勵磁調節器和基於二次型性能指標設計的最優快控汽門（考慮發電機的飽和因素）進行了對比，證實了採用此種控制器可以有效地提高電力系統的暫態穩定性，並且在電力系統遭受小干擾時同樣具有良好的調節性能。
  4. As the step - down transformer has no load when the scr is turned off, the system is stable during switching. less transformers, small area the device occupies, the relative simplicity of connection are the other advantages

    這種補償方案由於在晶閘管關斷時降壓變壓器相當于空載，不存在暫態過程的不穩定問題；所用的變壓器數目少；佔地面積較少；接線相對較簡單。
  5. The two principal purposes of the imf are to promote exchange stability and to help member countries overcome temporary difficulties in their balance of payments

    國際貨幣基金組織的兩個主要宗旨是促進匯率穩定和幫助會員國克服國際收支方面的暫時困難。
  6. The results demonstrate that the upper limit of permafrost in this area had declined from 1970s to the middle phase of 1990, and permafrost has appeared degenerate tendecy, but since middle 1990s, permafrost have a stable state ; ground temperature of roadbed near the earth surface is higher than that of the natural ground, thawing time of roadbed near the earth surface is longer than that of the natural ground, the heat income within the permafrost is greater than the heat release from the permafrost during anannual period, the heat accumulation within the permafrost is temporarily appeared as temperature rising, but with the heat accumulation within permafrost growing up year by year, permafrost temperature will become higher gradually, and strong thawing of permafrost could be happened in the region

    結果表明：風火山地區從20世紀70年代到90年代中期凍土上限下降，凍土出現退化現象，從90年代至今凍土趨于穩定；路基近地表地溫明顯高於對應天然地表下的地溫，路基近地表經歷的融化期長于對應天然地表，進入多年凍土區的熱收支也呈現出吸熱明顯大於放熱的周期性變化，進入多年凍土的熱積累暫時以增高地溫耗熱為主，但隨著凍土吸熱量的逐年積累、凍土溫度的不斷升高，本區凍土可能發生強烈融化。
  7. The geometric explanation of the image principle presented in “ a new method to determine the transient stability boundary using nonlinear theory 1 is given. a theorem to determine the critical clearance time is derived. from the calculation results of two examples, the correctness of the theories put forward by this paper and paper 1 is verified

    對論文《運用非線性系統理論確定電力系統暫態穩定域的一種新方法》 1中所提出的映射機理作了幾何解釋；提出了確定電力系統臨界切除時間的定理；通過對一簡單電力系統和電科院6機22節點算例的計算，驗證了本文及文1所提出的理論的正確性。
  8. In order to effectively enhance system transient stability, research on how to set reclosing time based - on shortest periodic time is always followed with interest

    如何在重合閘裝置最小間歇時間的基礎上整定重合閘時間，以最有效的提高系統暫態穩定性方面的研究一直受到關注。
  9. When making the transient simulation for modern large scale power system, both calculation storage amount and time cost are large

    摘要對具有龐大規模的現代電力系統進行暫態穩定計算時，計算存儲量大，計算時間長。
  10. In probabilistic dynamic security assessment, probabilistic transient stability " is mainly discussed. detailed models of transmission line, protection system and emergency control measures are added to step - by - step transient stability programs

    首先建立動態模擬中輸電線路和保護系統的詳細模型，建立了基於時域模擬的暫態穩定模型，以及各種緊急控制措施模型。
  11. The influence of induction - motor ration on the problem of transient stability is discussed. the case of henan provincial power system using actual load parameters is studied. comparative results show that the influence of dynamic load characteristics on the stability of power system is important and profound

    模擬計算了在暫態穩定問題中，負荷感應電動機比例對極限切除時間的影響，採用實測的三階感應電動機負荷模型來進行河南全網的穩定計算，並與以往使用的近似的負荷模型計算結果進行比較。
  12. However, the traditional calculation theories do n ' t take static variable restrictions into account

    傳統的計算方法求解暫態穩定極限時，沒有考慮系統中靜態變量的約束情況。
  13. The scale of the equivalent system is of 50 percent of the original one, and the time cost of transient siumlaton for the equivalent system is reduced to almost half while the calculation precision is acceptable

    算例中等值網路的節點數目、支路數目、發電機數目和負荷數目大約只有原始網路的50 % ，用等值網路進行暫態穩定計算大約可以節省一半的計算時間，且計算結果的精確度完全滿足工程的需要。
  14. Secondly, after analyzing the advantages & faults of time - domain simulation and the direct methods, this paper points out the key of developing the transient stable methods is the integration of both. the cct - calculating method is presented which is based on the trajectory sensitivity and the hybrid method. and the time - domain simulation program has been programmed

    （ 2 ）在分析了電力系統暫態穩定分析方法的時域法模擬法和直接法的優缺點之後，指出暫穩分析方法的發展在於二者的結合，提出了基於軌跡靈敏度的時域法和直接法相結合的暫穩分析方法，並將該法應用於臨界切除時間的計算。
  15. After considering the localization of the traditional classified method, the paper proposes a screening method that the contingencies are sorted into three types : security, insecurity and the status between the two conditions, which is fit for preventive control. so the preventive control can be realized easily

    考慮到這種分類方式的局限性，且為了便於進行暫態穩定控制，本文在事故篩選時將事故分為三類：安全、不安全、介乎二者之間，並將臨界切除時間作為穩定指標來進行分類。
  16. More and more evidence shows that there are errors in the traditional method, which is based on the time - fraction snapshot data. even with the support of wams, the correctness of the result cannot improve radically

    但是，近年來的事故記錄表明，傳統基於時間斷面和系統模型的暫態穩定分析方法存在著較大誤差，導致控制措施難以適應現代電力系統。
  17. The dependence on measurement and model of each calculation is pointed out, that is, the real time calculation should depend more on measurement, the off - line calculation should depend more on system model, and the planning calculation should depend more on algorithm

    其中，實時計算應該更多地依賴測量，離線計算應該更多地依賴模型，而規劃計算則應更多地依賴演算法。在研究如何利用wams過程數據進行快速暫態穩定分析之前，本文探討了wams構建與pmu配置問題。
  18. Sudden loading and sudden unloading, parallel connection, etc. ). this soft can easily set parameters of the system and the components, and it also can set many sorts of faults. it can display the results statically or dynamically

    該程序可任意設置系統的、元件的參數；可以設置各種故障；能夠靜態、動態實時的顯示模擬結果。 3 、運用神經網路的方法，進行暫態穩定分析。
  19. For example, since different operating points of power system have different stability characteristics, utility engineers often perform a large number of stability studies to search for a stable one by trial - and - error methods incorporating engineering experience

    目前各電網調度中心主要採用的試錯搜索法結合穩定計算經驗來尋找保持暫態穩定的運行方式的方法，現在看來無疑是耗時的和不完善的。
  20. Based on the data on 2010 shanghai grid plan, and taking the two hvdc systems, gezhouba to nanqiao and three gorge to shanghai huaxin, which will have set in shanghai by 2010 as simulation objects, the impacts of multiinfeed hvdc system faults on transient stability of shanghai power grids are studied

    以2010年上海電網規劃數據以及屆時落點于上海電網的葛洲壩南橋、三峽上海華新2條直流輸電系統為模擬研究對象，主要研究了當直流輸電系統出現故障時對上海電網的暫態穩定帶來的影響。
分享友人
分享到 Line

分享到臉書