短路比 的英文怎麼說

中文拼音 [duǎnlùbǐ]
短路比 英文
short circuit radio
  • 短 : Ⅰ形容詞（空間、時間兩端之間的距離小） short; brief Ⅱ動詞（缺少; 欠） lack; owe Ⅲ名詞1 （缺點） we...
  • 路 : 1 （道路） road; way; path 2 （路程） journey; distance 3 （途徑; 門路） way; means 4 （條理） se...
  • 比 : Ⅰ動詞1 （比較; 較量高下、 長短、距離、好壞等） compare; compete; contrast; match; emulate 2 （比...
  • 短路 : [電學] short; short circuit; cutting out; direct short; short out; short pass短路保護（裝置） sho...
  1. The single - phase grounding fault frequently occurs in neutral ungrounded system, the fault line and fault location must be found to avoid a phase - to - phase short as soon as possible

    單相接地故障在小電流接地系統中出現的比較頻繁，此時必須盡快找到故障線路以及大致的故障點，以避免兩相對地短路。
  2. The elements of the reduced - jacobian matrix are functions of some parameters of the system. for example, effective short ratio, power base ratio, coupling impedance and load flow of the system. for single - infeed hvdc system with a parallel ac line, computer simulations using power system analysis software package ( psasp ) were performed

    用一種簡單的方法可以求得降階雅可比矩陣，由於降階雅可比矩陣的元素都是交直流混合系統中一些參數的代數函數，如有效短路比、功率基準比、連接阻抗和系統潮流等，因此，矩陣的特徵值也與這些參數相關。
  3. Analyze and compare pid and vague, single neuron etc. control strategy, and combine with single neuron self adaptive gain, self adaptive right value and preventive integral saturation etc. control strategy. have improved single neuron control algorithm, may restrain efficiently to disturb, reduce broken arc and short circuit etc. phenomenon, make systematic control effect and robustness get to strengthen, also have certain application reference value for the design of the dc arc furnace

    通過對pid 、模糊、單神經元等控制策略的分析比較，將單神經元增益與權值的自適應調節、抗積分飽和等控制策略相結合，改進了單神經元控制器演算法，可以有效抑制擾動，減少斷弧、短路等現象的發生，使系統的控制效果和魯棒性都得到增強，對電弧爐控制系統的設計也具有一定的應用參考價值。
  4. Combining the international newest research result of multicast tree, this paper get a series of high efficiency arithmetic of multicast tree problem with the method of increasing storage space, and this paper also takes into account the dynamic capability of arithmetic. in many research fields of multicast tree, many high - efficiency solutions were obtained in this paper. this paper has broadly discussed about multicast tree problem and obtained dmdt ( dynamic minimum distance tree ), fmph ( fast minimum path cost heuristic ), dmph ( dynamic minimum path cost heuristic ) and fgmra ( fast group multicast routing arithmetic )

    本篇論文對多播生成樹問題進行了比較全面的討論，涉及內容包括單約束的單樹多播、單約束的成組多播等多個方面，所提出的動態最短路徑樹演算法dmdt （ dynamicminimumdistancetree ） ，最小代價多播生成樹演算法fmph （ fastminimumpathcostheuristic ）動態最小代價多播生成樹演算法dmph （ dynamicminimumpathcostheuristic ） ，成組多播快速路由演算法fgmra （ fastgroupmulticastroutingarithmetic ） ，都取得了顯著的效果，是目前同類問題中比較好的解決方案，達到了預期的目的。
  5. The problem about neutral - point - grounding mode is an all - around technical problem which associated with not only power system reliability ， insulation coordination ， electromagnetic interference ， but assault safety 。 in china ， the neutral grounding modes of the 10kv net involved of none grounding, grounding by arc suppressing coils, resistance grounding or reactance grounding in the past 。 with the development of civic power network ， low resistance grounding mode was used to restrain the over voltage, particularly in guangzhou, shanghai ， beijing ， and zhuhai etc. it was reported that the over - voltage level of low resistance grounding mode is lower than that of arc suppressing coil mode, but the operation carried out the other way 。 at substations in guangzhou and shanghai it was found that the low resistance grounding mode is successful 。 but in some areas ， such as zhuhai ， substations grounding with low resistance revealed some problems ， including power supply reliability rapidly dropping ， transmitting line often tripping ； and person safety being threatened 。 so interiorly the grounding mode selection of the 10kv network was disputed, which mainly focused on the fault form of 10kv net grounding, the apply area of suppressing arcing coil grounding mode, power supply reliability level of the two modes, person safety, communication interfere and the workload of maintenance

    爭議點主要是在10kv電網接地故障的形式、消弧線圈接地的應用范圍、兩種運行方式供電可靠性的高低、人身安全、通訊干擾和運行維護工作量等諸多方面。 11 17本論文就是針對以電纜為主的城區10kv電網中性點接地方式的選擇問題進行研究。論文首先對10kv電網的中性點運行各種方式進行分析，比較各方式的特點，然後以重慶儲奇門變電站10kv電網的實際參數來建立數值計算模型，在考慮了電網接地電容電流變化、中性點電阻取值大小、接地點接地電阻值變化等多種影響因素的情況下，對中性點經消弧線圈接地和經小電阻接地方式下電網的過電壓水平和接地點短路電流大小進行了數值計算，其計算結果與電科院所作現場試驗進行了比較。
  6. For multi - infeed hvdc systems, when the minimum eigenvalue of the system becomes zero, the voltage stability graph can be plotted effective short circuit ratio as function of coupling impedance

    對于多饋入hvdc系統，在最小特徵值為零的情況下，可以根據這種關系作出有效短路比?連接阻抗圖，即電壓穩定圖。
  7. The time complexity is low because only shortest paths connected to relay nodes is compared. simulation results show that fairly good cost performance is achieved. there is trade - off between complexity and performance

    由於比較了通過中轉節點后的最短路徑，因此運算的復雜度大大降低，且通過模擬得到了較好的性能，模擬結果表明sp - dvma演算法是一種低復雜度的時延和時延差約束的多播路由演算法。
  8. Research on surface and grain boundary passivation mechanism obtained effects of surface recombination on crystalline silicon solar cell performance and the theoretical expression of grain boundary recombination velocity. the limit ratio of short - circuit current increment for anti - reflection coating utilization on solar cells was obtained. the crystalline silicon solar cell spectral response, contact resistance and minority carrier lifetime measurement systems were established

    鈍化機理研究獲得了表面復合對不同表面摻雜濃度晶體硅太陽電池性能的影響、表面和界面復合速度的理論表達式；研究得到了減反射膜對太陽電池短路電流增量比的極限；建立了太陽電池光譜響應、柵線電極接觸電阻和少子壽命等測試系統。
  9. However, the refractive index will increase with the increase of the flow ratio of sifu / nhs, slightly increase with the increase of substrate temperate, and decrease with the increase of rf power. by measuring the passivation results of hydrogen plasma and sinx thin film, we found an evident improvement of minor carrier lifetime in polycrystalline silicon after hydrogen plasma treatment, although it has little to do with the annealing temperature and time. the hydrogen contained in sinx thin film can enhance the carrier mobility of monocrystalline silicon, but after annealing at high temperature the mobility turns down

    通過測試氫等離子體鈍化和氮化硅薄膜鈍化的效果，實驗還發現氫等離子體處理對多晶硅材料的少子壽命提高作用比較明顯，但是這種提高作用與處理溫度以浙江大學碩士學位論文王曉泉2003年5月及時間的關系不大；氨化硅薄膜中的氫對單晶硅的載流子遷移率提高有一定作用，但經過高溫處理后這種作用消失；氮化硅薄膜能提高單晶硅和多晶硅的少子壽命，具有表面鈍化和體鈍化的雙重作用；氫等離子體和氮化硅薄膜都能有效地提高單晶和多晶電池的短路電流密度，進而使電池效率有不同程度（絕對轉換效率0
  10. After a simulated sample is given, we compute on this sample coupling analysis and steady non - linear analysis. by contrast with the experimental outcome of short circuit, we make certain that steady non - linear analysis should be used to analyze a true model. and then, we confirm the external conditions of finite element heat analysis after analyzing the cooling ways of multiple magnetic circuit transformers

    2 、論述了有限元分析的電磁場和溫度場的理論基礎;製造出模擬樣機，分別用耦合場分析法和穩態非線性分析法對其進行計算，計算結果與其短路實驗結果進行對比，驗證了穩態非線性分析法計算結果的可信性;分析多磁路變壓器的冷卻方式，確定有限元熱分析的外部條件。
  11. Through developing a 2 - dimensions heat transfer model of buried pipe - in - pipe heat exchanger and simulating the process by computer, the author figures out inter - relations of factors which influence characteristics of buried pipe - in - pipe heat exchanger, such as pipe diameter, pipe length, ratio of pipe diameters, flow rate, inlet water temperature, patterns of water inlet and outlet, and material features made of pipe, and proposes some optimizing indexes of buried pipe - in - pipe heat exchanger. the author studies the " heat - - short circuit " phenomenon as well and gives < wp = 5 > some important results

    本文通過建立地下套管式埋管換熱器傳熱過程的二維傳熱模型，並藉助計算機對分析結果進行解析，弄清了影響埋管換熱器性能的管徑、管長、管徑比、通過流量、進水溫度、進出水方式以及管材等參數的作用，並提出了相應的優化指標，對研究界懸而未決的「熱短路」問題也進行了細致分析，得出了有關結論。
  12. Two methods for improving short - circuit ratio of the three - phase synchronous generator

    提高三相同步發電機短路比的兩種方法
  13. This paper considers two controllers with different feedback signals ? the ac current phase angle of converter transformer and the ac voltage magnitude of inverter bus, respectively. pscad / emtdc simulation software is used for the controller testing. the test models used for the analysis are the cigre hvdc benchmark systems with different scr at the inverter side

    為了驗證該控制方式的有效性，本文採用了電磁暫態模擬軟體pscad emtdc ，在國際大電網會議cigre提出的hvdc標準模型上，用逆變側短路比不同的系統對調制控制器的性能進行了模擬測試，調試出了調制控制器的各參數值。
  14. The mishaps ? a short - circuit at the brunsb ttel plant and a transformer fire at the kr mmel station ? posed little threat

    兩起問題不大的事故? ?布隆斯比特核電廠送出線路短路跳閘和科魯默爾核電廠變壓器故障起火，對公眾生活和自然環境本來構不成任何威脅。
  15. We got the spatial distribution map of population density by spatial interpolation, in which the population data are distributed on the grids. the results of the distribution of interpolated based on gis is closed to a real population distribution. the combination of the spatial interactive models and a shortest path algorithm for public transit network is analyzed by supermarket ' s accessibility based on pedestrianism and public transit. this methods may be used to investigate potential supermarket ' s locations. the quantitative analysis about the supermarket ' s market area is realized based on trade mode of lashmanan and hansen, which mainly includes spatial distribution of population, traffic accessibility and free competition between different firms

    文中應用空間內插技術實現了人口數據空間分佈化，將人口數據通過空間插值分佈於研究區域內，使人口空間分佈更接近實際；應用公交最短路徑演算法及空間相互作用模型實現了基於步行和公交出行的超市可達性，將交通對超市選址的影響定量化，方便了方案的比選；在綜合考慮人口空間分佈、超市交通可達性、現有零售商業競爭態勢的基礎上，基於拉、漢購物模式實現了超市商圈定量分析。
  16. This method has three merits : first, reduce the harm to the battery ; second, this current is stable ; the last, the current may represent the battery ' s current function better. in order to study this problem, we design a install to make lots of experiments to prove this result. the install can use in the factory as a automation instrument if it be perfected

    此方法和原有方法比較有三大憂點：一是減少了直接短路時大電流放電對電池的損傷：二是此迴路電流值穩定存在，可以對其進行比較準確的測量：三是此電流值更能代表堿錳電池實際工作時的放電性能c為了本研究的順利實施，本課題提出了一個堿錳電池四參數檢測的實驗平臺，做到對電池的開路電壓、負載電壓、電流指標、電池重量四參數的檢測。
  17. To analyze the factors of impacting load balancing of links, which is including the number of routes between source node and destination node, the number of routes through every link, the maximum flow between source node and destination node, the maximum flow through every link, the free bandwidth of every link and so on, we present the fast dynamic routing algorithm ( fdra ) and the critical link routing algorithm ( clra ). simulation results show presented algorithms in the paper are better than other algorithms in reject ratio of the traffic requests and performance of rerouting the traffic requests when a link is failure, especially in computing time cost

    通過分析影響網路的鏈路負載均衡的因素，比如源-目的節點間的最大流，通過每條鏈路的最大流，源-目的節點間的路徑數目，通過每條鏈路的路徑數目，以及鏈路的剩餘容量等，提出了快捷動態路由演算法fdra和關鍵性鏈路路由演算法clra ，通過模擬，與最小跳演算法（ mha ） 、最寬最短路徑（ wsp ）演算法、最小干擾路由演算法（ mira ）相比較，提出的兩種演算法在業務阻塞率、資源利用率以及重路由性能方面都有很好的效果。
  18. Secondly, the following two subjects are discussed according to the calculation of short - circuit current : ( l ) to verify the dynamic stability condition of wires by using simulated annealing algorithm ( sa ), the paper calculates the maximum value of rectangle wires " short - circuit electrodynamic stress and gets the conditions of their having the maximum value. furthermore, some concerned data about the verifying of copper wires are given by analysing vibration spectrum of the electrodynamic stress ; ( 2 ) in order to get the heat withstand conditions of wires, the paper discusses some common calculation methods, and then tries to study the problem applying artificial neural network ( ann ) based on heat principle of metals. the model is shown to be feasible

    其次，在電路中短路電流計算的基礎上， （ 1 ）進行母線的短路動穩定校驗計算：採用模擬退火演算法（ sa演算法）計算了矩形母線短路電動力的最大值及其取極值的條件，獲得了更為一般的結果，進而通過短路電動力的頻譜分析，給出了銅質母線的有關短路校驗計算數據； （ 2 ）進行母線的短路熱穩定校驗計算：討論了熱穩定校校的幾種常用計算方法，從導體或電器的發熱機理出發，運用人工神經網路理論對母線的熱穩定問題進行計算，通過算例比較，證明該方法用於熱穩定計算是可行的。
  19. The abs ’ mainframe can get train ’ s velocity and acceleration from the velocity sensors, and then accomplishes some certain braking actions in term of them. but velocity sensors are easier damaged because of its special installing position and working environment. the mainframe of abs only can diagnose some simple faults, for example, the short circuit and open circuit

    其中速度傳感器是防滑器正常制動的關鍵部件，但是轉速傳感器在工作時安裝位置比較特殊，工作環境惡劣，容易受到腐蝕、碰撞等損傷，而防滑器主機通常僅能對轉速傳感器的短路或斷路故障做出診斷，對轉速傳感器發生的其他故障難以識別，這樣就容易在列車運行時引發防滑器誤動作，甚至導致事故發生。
  20. The transient simulation model of impedance - matched balancing transformers is established. the effect of transient model and equivalent circuit in calculation of steady short circuit current are compared

    摘要建立了阻抗匹配平衡變壓器的暫態模擬模型，比較了暫態模型和等值電路在計算穩態短路電流中的效果。
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