高電壓端 的英文怎麼說
中文拼音 [gāodiànyāduān]
高電壓端
英文
high voltage end-
In this thesis, the author analyses the deficiency in detecting and controlling function of the computer detecting and controlling system utilized in present transforming station. the strategy of design of software on operation and direction of 5 00kv transformer station is presented. it points out that we can deduce the mathematic analytical formula using the current, voltage and power of two terminals of transmission line as input. on this basis, we do realtime calculation of 500kv transmission line ' s parameter. we can also deduce the linear analytical formula of three - winding autotransformer ' s resistence using its current, voltage and power as input. the corresponding software is programmed on this basis
論文提出以輸電線路本端和對端電流、電壓、功率作為輸入量，導出了超高壓長線的波阻抗和傳播常數的數學解析式，在此基礎上進行了500kv輸電線路實時參數計算；提出以三繞組自耦變壓器的電流、電壓、功率為輸入量，導出了自耦變壓器繞組的電阻、電抗的線性解析式並進而對變壓器的實時參數進行計算；在此基礎上編制了相應的軟體。In this paper, a kind of output current feed - forward circuit is added into the input of the current loop. by adding this compensatory circuit, the output character of the inverter is improved greatly
本文還研究了一種提高逆變器輸出電壓外特性的思路，通過將負載電流正反饋給逆變器的電流環輸入端，從而達到提高輸出電壓的外特性的目的。The experiment apparatus has been developed, which is based on software ( labview ) and hardware ( pci board ni 6024e ). the displacements and generative force at the tip of the ipmc actuators were measured with respect to the different voltages, frequents and various waveforms which include square, sinusoidal, and triangular wave
實驗選取了不同電壓幅值，不同頻率的方波、三角波、正弦波三種波形作為電激勵信號，利用高速攝像記錄ipmc的位移變形，並通過力傳感器實測了ipmc試樣末端的輸出力。This device realizes series resonance between high voltage inductance and tested capacitance. because of series resonance a higher voltage exists on the tested capacitance than the power ' s output. so a new ac high voltage test way to large capacity sample comes true
該裝置以調頻的方式實現高壓電感和被試品電容的串聯諧振，從而在被試品上得到高於電源輸出端的電壓，即實現了以小容量電源對大容量試晶進行交流耐壓試驗的一種新方法。Electrical field stress at the icicle tips is even stronger. at these areas, if the electric field across air gaps is high enough, corona discharges are initiated. this can lead to the development of local arcs across the air gaps causing a substantial increase in leakage current and a concomitant melting of ice
空氣間隙的存在使覆冰絕緣子表面的電場分佈發生了明顯畸變，間隙上承受了非常高的電壓，這使得冰凌尖端的電場變得相當強，一旦電場達到了電暈的起始電場，局部放電就在這一區域發生，進而產生局部電弧並逐漸發展成整串的閃絡，泄漏電流迅速增大，同時伴隨著冰的融化。To resolve the situation that the sensitivity of present ground fault protection schemes is low for the large - sized hydro - generators, a kind of protection scheme based on the fault component of third - harmonic voltage and two kinds of protection scheme based on the fault component of zero - sequence voltage at the terminals and neutral are developed, and they can obtain higher sensitivity and reliability and provide 100 % protection for the stator windings. the influence of noise on the stator ground fault protection based on the local modulus maximum of wavelet transform is analyzed
針對目前大型水輪發電機定子繞組單相接地保護靈敏度偏低的問題，通過分析單相接地故障后機端和中性點零序電壓的變化特點，提出了一種基於機端和中性點三次諧波電壓故障分量和兩種基於機端和中性點零序電壓故障分量的高靈敏度、高可靠性保護方案，並實現定子繞組的100 %保護。It also put forward that how to select appropriate epilayer doping concentration and thickness, pn junction depth and jte technology to increase the breakdown voltage of 4h - sic mps. a power dissipation model of 4h - sic mps was established
通過對4h - sicmps擊穿特性的二維模擬，提出如何選擇合適的pn結深度、外延層摻雜濃度和厚度以及如何運用jte終端技術來提高擊穿電壓。( 5 ) taking full of advantage of the ado. net and asp. net technology under the. net platform. it construct a powerful remote control and monitor system and meet the reqirment of the users. in order to achieve real - time control, it design a front environments built on the asp. net structure, from which the system can fulfill the real - time function. due to the characteristic of drain off water pump station remote control and monitor system ( big pump station need high voltage ( 6000v ) and great power ), so now do n ' t adopt the ways that client _ end controls it. in addition, the server - end design a database to manage from which the system could tackle users information and online users log in the form of winform and strengthen the safety of the system
Net平臺下的ado . net與asp . net技術，發揮兩者的武漢理工大學碩士學位論文優勢，構造了功能更強的遠程監控系統，更好的滿足用戶的需要。系統設計中以asp . net架構為前臺環境，實現了客戶端通過ie瀏覽器來實時的監控到排水泵站的運行情況，使系統達到了實時監視，但由於大泵機工作電壓高（ 6000v ）功率大（ 100okw ）的特點，暫不採用客戶端控制系統。在服務端，設計了數據庫，並且以winform的形式來管理網路管理員和用戶的信息以及在線用戶的日誌，加強了系統的安全性。It ' s high - frequence noise absorption, absorption of noise caused by rapid rise of front and self - reset function have widespread application in imput of supply, for absorption of inductive load switching surge voltage and for protection of two - way thyristor switching device, bypass capacitors, micro - machines and the others
它所具有的吸收高頻噪聲、前沿快脈沖上升噪聲及自復位功能，使其在電源輸入端、吸收電感性負載開關浪涌電壓、保護雙向可控開關器件、旁路電容器、微型電機等方面有著廣泛的用途。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。It is respectively : production, facility for transporting operates personnel : jockey of lathe work, milling, grinding work, boring labour, solderer, modular machine tool, machining center jockey, casting matchs benchwork, besmear to install ship - fitter of ship - fitter of equipment of benchwork of labour, tool, boiler, electric machinery, discretion to control ship - fitter of appearance of ship - fitter of appearance of instrument of electric equipment ship - fitter, electron, electrical engineering instrument, machine ; irrigation works of aricultural herd fishing produces personnel : inspector of quarantine of the member that animal epidemic disease prevents and cure, animal, firedamp produces work ; personnel of line of business of commerce, service : the member that assistant, bagman, publication is issued, chinese traditional medicine purchase and sale, clerk of the member that the division of division of appraisal appraisal division, chinese style noodle, chinese style noodle, western - style cook division, western - style noodle division, division that move wine, nutrition distributes food, dining - room, antechamber clerk, client clerk, health care ; handle affairs personnel and concerned personnel : secretary, public relations member, the member that terminal of communication of computer operator, cartographer, operator, user is maintained
分別是：生產、運輸設備操作人員：車工、銑工、磨工、鏜工、焊工、組合機床操作工、加工中心操作工、鑄配鉗工、塗裝工、工具鉗工、鍋爐設備裝配工、電機裝配工、高低壓電器裝配工、電子儀器儀表裝配工、電工儀器儀表裝配工、機修鉗工、汽車修理工、摩托車維修工、精密儀器儀表修理工、鍋爐設備安裝工、變電設備安裝工、維修電工、計算機維修工、手工木工、精細木工、音響調音員、貴金屬首飾手工製作工、土石方機械操作工、砌築工、混凝土工、鋼筋工、架子工、防水工、裝飾裝修工、電氣設備安裝工、管工、汽車駕駛員、起重裝卸機械操作工、化學檢驗工、食品檢驗工、紡織纖維檢驗工、貴金屬首飾鉆石檢驗員、防腐蝕工；農林牧漁水利生產人員：動物疫病防治員、動物檢疫檢驗員、沼氣生產工；商業、服務業人員：營業員、推銷員、出版物發行員、中藥購銷員、鑒定估價師、中式面點師、中式面點師、西式烹調師、西式面點師、調酒師、營養配菜員、餐廳服務員、前廳服務員、客戶服務員、保健按摩師、職業指導員、物業指導員、物業治理員、鍋爐操作工、美容師、美發師、攝影師、眼鏡驗光員、眼鏡定配工、家用電子產品維修工、家用電器產品維修工、照相器材維修工、鐘表維修工、辦公設備維修工、保育員、家政服務員、養老護理員；辦事人員和有關人員：秘書、公關員、計算機操作員、制圖員、話務員、用戶通信終端維修員。The simulation results indicate, deep - trench junction termination with certain width, depth and filling with isolated dielectric can increase the avalanche breakdown voltage of devices to above 95 % of the ideal value
結果表明：具有一定寬度、深度且填充絕緣介質的深阱結終端結構，阻止了結的橫向擴展，並能將器件的雪崩擊穿電壓提高到理想值的95以上。If line length is half wave at a certain frequency and both the load resistance rt and source resistance rs are higher than the characteristic impedance zo, then both the voltages at input and at load are maximum at that frequency and both the voltages at input and at load are minimum at half of that frequency
負載端電阻及電源電阻均高於傳輸線特性阻抗情況下，當線長為某頻率波長之半波，則輸入端與負載端電壓在該頻率均為最高，在該頻率之半時則電壓均為最低。If line length is half wave at a certain frequency and the load resistance rt is lower while source resistance rs is higher than the characteristic impedance zo, then both the voltages at input and at load are minimum at that frequency and both the voltages at input and at load are maximum at half of that frequency
負載端電阻低於傳輸線特性阻抗及電源電阻高於傳輸線特性阻抗情況下，當線長為某頻率波長之半波，則輸入端與負載端電壓在該頻率均為最低，在該頻率之半時則電壓均為最高。It is made of computer network, plc, and new field bus - profibus, the new control system has been debugged successfully, it ( has collect the signals from the 4mv high voltage terminal through the way of infrared and optical fibres, it ends the history that the 4mv high voltage terminal is a black box
由控制微機，可編程式控制制器和新的工業現場總線? ? profibus組成的加速器控制系統已經調試成功，它把高壓端的信號成功地通過紅外線和光纖通路採集到微機，結束了傳統靜電離子加速器高壓端是個黑匣子的局面。And the fuzzy control technology has been studied that reduce the stator terminal voltage to achieve higher power factor through testing power factor and using certain rules. the asynchronous motor intelligence operating control system plan design has been completed. simulation design and simulation experiment of the system has been carried on, and the simulation result indicated this intelligence control system has achieved the anticipated effect
在分析電機功率因數角的變化規律及功率因數角對晶閘管輸出電壓的影響的基礎上，提出了異步電動機在輕載或空載運行時通過檢測功率因數並經過一定規則降低定子端電壓來達到提高功率因數目的的模糊控制方法，完成了異步電動機節能運行控制系統的軟硬體設計，並進行了系統的模擬研究與實驗研究。Unified power flow controller ( upfc ) is one of the most powerful and most promising controllers of facts. if we use upfc to control the transmission parameters, terminal voltage, line impedance and phase angle in normal situation and use it to compensate zero sequence and negative sequence currents when one of transmission lines is cut off, we can implement two phases operating in high voltage transmission lines, which can improve stability and reliability for the transmission system
統一潮流控制器（ upfc ）是功能最強、最具發展潛力的靈活交流輸電系統（ facts ）控制器之一，如果在常規條件下，用upfc實現輸電線路的電壓調節、移相、潮流控制、阻尼振蕩等功能，在發生單相永久性接地或單相斷路故障時，由傳統的三相跳閘改為單相跳閘，用upfc的並補來濾除兩端系統的零序和負序電流，用upfc的串補來提高輸電線的傳輸功率，以實現兩相長期運行，那麼輸電系統的穩定性、可靠性將大大提高。In this paper, they are set forth at first that the kinds of computer - simulation of electronic devices, the development and the requirements of mosfet ' s model and the way of gain the models " parameters, the dc models have been bui it in chapter 2 and the models of big signals have been deduced in chapter 3, they are different from the equivalent circuit models in the traditional software pspice that they come from the numer i ca i - s i mu i at i on wh i ch is based on the essence equat i on, so the precision of simulation is enhanced ? mosfet ' s small signal models of low frequency, intermediate frequency and high frequency have been built in chapter 4 and chapter 5, although the equivalent circuit models in pspice are used for reference to bui id them, they have their own characteristics which are analyzed at a i i kinds of situations, so that the simulation software for mosfet can be written according them and it i s a i so benef i c i a i for us to catch the gen i us character i st i cs of mosfet and to d esign all kinds of applicable devices the correctness of the models is simply proved in chapter 6
本文首先介紹了電子器件計算機模擬的分類、 mosfet的建模發展動態、對器件模型的要求以及模型參數的提取方法。在第二章中建立了mos晶體管在直流端電壓條件下的工作模型；第三章推導了mosfet的大信號模型，這兩類模型不同於傳統模擬軟體例如pspice中的等效電路模型，而是從模型方程出發，採用數值模擬的方法，提高了模擬的精度。第四章和第五章分別建立了mos晶體管低頻、中頻、高頻的小信號模型，雖然借鑒了pspice模擬軟體中用等效電路模型的方法，但是本文分別討論了準靜態和非準靜態時器件的本徵部分以及包含非本徵部分工作于低頻、中頻和高頻條件時的模型，可以根據這些模型編寫相應的模擬軟體，這樣在做器件的模擬分析與器件設計的時候，就可以利用模擬軟體逐步深入地分析器件在不同的條件下和器件的不同部分在工作時的各種小信號特性，有利於抓住器件工作的本質特性，設計出符合要求的各類通用和特殊器件。Ti ? the current into an input when a high - level voltage is applied to that input
一個高電平電壓信號加到一個輸入端時，流進該輸入（端）的電流。Three phase oil - immersed distribution transformers, 50 hz, from 50 to 2500 kva with highest voltage for equipment not exceeding 36 kv - distribution transformers with cable boxes on the high voltage and or low voltage side - general requirements
最高電壓不超過36kv的設備用的50hz 50 - 2500kva三相油浸式配電變壓器.帶有高壓和或低壓端電纜接線盒的配電變壓器.一般要求分享友人