暫態效應 的英文怎麼說

中文拼音 [zhàntàixiàoyīng]
暫態效應 英文
transient effect
  • 暫 : Ⅰ形容詞（時間短） short; momentary Ⅱ副詞（暫時） temporarily; for the moment; for the time being
  • 態 : 名詞1. （形狀; 狀態） form; condition; appearance 2. [物理學] （物質結構的狀態或階段） state 3. [語言學] （一種語法范疇） voice
  • 效 : Ⅰ名詞（效果; 功用） effect; efficiency; result Ⅱ動詞1 （仿效） imitate; follow the example of 2 ...
  • 應 : 應動詞1 （回答） answer; respond to; echo 2 （滿足要求） comply with; grant 3 （順應; 適應） suit...
  • 效應 : [物理學] effect; action; influence
  1. 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。
  2. The effect of temperature transients on measurement of acceleration is discussed in this paper

    摘要本文就執行加速度量測時暫態溫度效應的影響作一探討。
  3. This paper proposed some methods for finding out sure regions and ambiguous regions defined by lower and upper approximations in rough set theory. an applicable ending - criterion for semi - supervised back - propagation algorithm was proposed and a new rough classifier framework was studied, the assessment results show the effectiveness of the proposed criterion. a new classifier based on support vector machines was studied and applied

    本文提出了幾種劃分樣本邊界區的方法:提出了一種應用於半監督bp演算法的實用結束判據，並根據粗糙集理論，研究了一種新的粗糙分類機制，取得良好的效果；應用支持向量機理論，構造分類器並劃分樣本邊界區；最後研究多個分類器集成的方法尋找樣本邊界區，同樣提高了暫態穩定評估的可靠性
  4. The rails are affected by the skin effect for its large permeability and size. the track time constants are not constant due to the skin effect. for the calculation of the rails impedance, the method of equivalent cylindrical conductor is developed

    由於鐵軌很大的磁導率和截面尺寸，致使其阻抗在電磁暫態過程中受到了集膚效應的影響，從而使得鐵軌的時間常數在暫態過程中並非是一個常數。
  5. Several illustrative examples arc appended to verify the efficiency of the proposed methods

    由實例的驗證可知：本文所提之方法對于降低暫態溫度效應的影響確屬有效。
  6. By analyzing the refraction 、 reflection process of fault transient current traveling wave of high voltage and characteristics of refraction 、 reflection coefficient systematically, a new fault location method of single ended traveling wave is presented. it can not only identify the reflection wave for fault location efficiently, but also not be affected by the structure and length of line. fault earthed resistance 、 fault type 、 system impedance and can locate fault in adjacent areas accurately

    論文深入地分析了高壓線路故障暫態電流行波的波折、反射過程以及折、反射系數的特點，提出了新的單端行波故障測距方法，它不僅能夠有效地識別出測距所用的反射波，而且幾乎不受線路結構、長短、故障接地電阻、故障類型、系統阻抗的影響，在近區仍可以準確地進行測距；同時模擬阻波器的特徵，設計了低通數字濾波器，對通過了低通數字濾波器的暫態故障電流行波再次進行小波分析，並利用本文提出的單端行波故障測距方法進行故障定位，結論是所提出的測距方法在實際應用中仍是有效的。
  7. The simulation results show that : neural ath - order inverse system control method have good adaptability to the running point and network structure ' s transformation, improve the stability of power system greatly and have good control performance when it was applied to the stability control of power system

    單機和多機系統的模擬結果表明，神經網路階逆系統控制方法應用於電力系統控制，對系統運行點和網路結構的變化有良好的適應性，可顯著改善系統暫態過程的動態響應，具有較好的控制效果。
  8. This method uses wavelet transform to pick up the transient fault information because of its multi - resolution characteristics and time - frequency localization nature. fault line is detected based on the modulus maxima or energy comparison under some scale of wavelet transform of phase currents or component current. this method is applicable for such power system as only furnished with ct on two phases, so the shortcoming of other methods presented in recent years is overcome

    即利用相應出線相電流或分量的暫態信息突變量在小波變換某一尺度下模極大值或能量比較來確定故障線路，該方法同樣適用於只裝設兩相ct的小電流接地系統，從而克服了迄今為止提出的一些選線方法在系統只裝設兩相ct時失效的問題。
  9. We do some research and discussion in the following respects : 1 、 in the respect of system modeling, since the method of equivalent has its localization, and can not adapt to the power system which is increasingly turning great. the article selects node voltage which is firstly used in the naval vessel electric power system

    本文主要對艦船電力系統暫態穩定性做了一些基礎性的研究，分別就以下幾個方面的問題進行了研究和探討： 1 、系統數學模型的建立方面，由於等效法具有自身的局限性，很難應用於日益龐大的艦船電力系統。
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