系統電壓降 的英文怎麼說

中文拼音 [xìtǒngdiànyājiàng]
系統電壓降 英文
system voltage drop
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 統 : Ⅰ名詞1 （事物間連續的關系） interconnected system 2 （衣服等的筒狀部分） any tube shaped part of ...
  • 電 : Ⅰ名詞1 （有電荷存在和電荷變化的現象） electricity 2 （電報） telegram; cable Ⅱ動詞1 （觸電） give...
  • 壓 : 壓構詞成分。
  • 降 : 降動詞1. （投降） surrender; capitulate 2. （降伏） subdue; vanquish; tame
  • 系統 : 1. （按一定關系組成的同類事物） system 2. （有條理的;有系統的） systematic
  • 電壓 : voltage; electric tension; electric voltage
  1. Abstract : the analysis of the mechanical and pneumatic control systems of scutcher machines is studied in this paper, a hydraulic control system with electro - hydraulic proportional valve to regulate the force imposed on the cotton lap is proposed. it can improve the quality of the lap, simplify system design and reduce cost. therefore, it is a very promising scutcher machine control system

    文摘:在分析了機械式和氣動成卷機成卷壓力控制系統的基礎上，提出了一種採用電液比例控制技術的成卷機控制系統.它不僅可以提高成卷質量，而且可以簡化系統設計，降低成本，是一種有希望的成卷機成卷壓力控制系統
  2. 9 dakai zhu, melhem r, childers b r. scheduling with dynamic voltage speed adjustment using slack reclamation in multi - processor real - time systems. ieee trans. parallel distributed systems, 2003, 14 : 686 - 700

    動態電壓調節是體系結構層的低功耗技術，由於系統運行的能量消耗與運行電壓成平方關系，在運行期間動態改變系統電壓可以極大的降低系統的功耗。
  3. Therefore it is the sticking point for solving the problem about separating the duty to find methods by which the customer emission level can be accessed ( the voltage that a customer ' s harmonic current begets at the point of common coupling ) more accurately

    由於劃分的依據主要由用戶與電力系統雙方發射的諧波電流在公共聯接點引起的電壓降的比例決定，因此，尋求對用戶諧波發射水平（用戶諧波電流在公共聯接點所引起的電壓降）的準確估計方法，成為了解決責任劃分問題的關鍵。
  4. Finally, the method of estimating power customer emission level based on binary linear regression is put forward, which make it a condition that harmonic emission is steady at the point of common coupling. combined with power system thevenin equivalent and customer norton equivalent, according to the principle of least squares method, the voltage that a customer ' s harmonic current begets at the point of common coupling can be estimated in the light of the plural correlation of network parameters

    最後，提出了基於二元線性回歸的用戶諧波發射水平估計方法，該方法在假設公共聯接點諧波發射穩定的情況下，結合系統側戴維南等值與用戶側諾頓等值的電路圖，按照最小二乘法原理，利用電網各參數的復數關系推導關于系統側諧波阻抗的二元線性回歸方程，並根據諧波阻抗的估計值求取用戶諧波電流在公共聯四川大學碩士學位論文（ 2003 ）接點產生的電壓降。
  5. Firstly, the thesis briefly reviews the history of voltage and reactive power control technology, focusing on the defects of the equipment in use. then, with the theoretical analysis and the discussion on voltage and the characteristic of power system as well as the basic principle of voltage and reactive power control, the thesis makes a research on the character of voltage and reactive power control and interprets the controlling regularity of substation. in addition, with the consideration of the changes of transformer tips and the combined influence of capacity groups and reactive power and voltage, the thesis makes adjustment suggestion to the different operating - zones of voltage and reactive power

    本文從降低網損和提高變電站自動化水平著眼，對變電站電壓無功控制應用方面的問題進行了研究，本文首先簡要回顧電壓無功控制的發展概況，著重指出了現有電壓無功控制裝置的缺陷；通過理論分析，在討論電力系統電壓、無功調節特點以及電壓無功總體控制原則的基礎上討論了變電站電壓、無功控制特性以及控制原理，給出了變電站電壓無功的控制規律；考慮了變壓器分接頭的變化及電容器組的投切對無功和電壓的綜合影響，針對電壓、無功的各種運行控制區域給出了相應調節策略。
  6. The emulational calculating theories of traction power supply system ' s operating charts combine with actual things of engineering design at present in chapter three, to set up traction web current distributing mathematical model, integral distributing mathematical model, locomotive distribution and obtaining current model at every moment, and on which making use of mathematical planning methods to set up mathematical models is based at every moment in every instance interval of the railroads. for instance, instantaneous current, instantaneous voltage descent and effective current, main changing capacity and so on, in addition, there are the minimum power shortage model, the optimal transformer substation location, the least engineering expenditure, the optimal mathematical model of traction power supply system. optimize design ' s algorithm of traction power supply system is introduced in detail in chapter four, where programming idea and realizing method of the computer software are given an explanation

    本研究主要進行了以下工作：結合牽引供電系統運行圖的模擬原理和現行工程設計的實際情況，建立了牽引網電流分佈、積分分佈、任一時刻機車分佈和取流的數學模型；應用數學規劃方法建立了任一距離區間、任一時刻的瞬時電流、瞬時電壓降數學模型和有效電流、主變容量和主變壓降、最小功率損失、最佳變電所容量、最佳變電所位置、最少工程費用、最少運營維護費用和牽引供電系統方案最優等方面的數學模型；闡明了牽引供電系統優化設計的演算法和計算機軟體編程思想及實現方法；進行了工程實例計算；最後，對牽引供電系統優化設計技術應用進行了總結。
  7. The result of the study shows that the electro - hydraulic proportional technology is useful for all - hydraulic operated drilling machine to simplify the operations and composition of system, to improve the level of automatization and efficiency and to reduce the consumption of energy. the result of the study also shows that the system of feeding has the properties as followed : fast respone, stable pressure - adjusted characteristic, distinct effect of energy - saving, some improvement of system efficiency

    研究結果表明：全液壓鉆機中應用電液比例技術，可以簡化系統組成和操作，提高鉆機自動化水平，提高系統效率，降低發熱和溫升；採用恆壓變量泵的給進加壓電液比例控制系統調壓性能穩定、響應快、節能效果明顯。
  8. This project makes some researches with emphasis on the mv / lv distribution power supply situation under the present load condition. some results such as the calculation of line load rate, theoretical line consumption rate and electric voltage decrease are acquired by the mathematical analysis, and thus the power supply capability is evaluated comprehensively. the same has been done to the lv power network

    課題在系統搜集分析蘇州供電企業的背景資料，即企業概況、電力需求、輸電網、高壓配電網狀況基礎上，重點研究了當前負荷下的中低壓配電網供電情況，並通過數學分析得出線路的負載率的計算、理論線損率以及電壓降等各項運行指標，綜合評估得出其供電能力。
  9. Secondly, their aims are made the investment of substations, feeders or running cost of electric power system minimum. but they do n ' t take into account of land utilization, street accessibility of right of way, etc., but demands of electric power system. generally, a straight line distance, namely, euclid distance, was used for calculating the distance between a load point and a substation, which is a straight forward but non - practical way for most planning techniques

    其次受研究工具的限制，這些模型以工程投資、運行費用等最小為目標，僅能考慮導線載流量、電壓降等電力系統技術約束條件，簡化略去了用地限制、街道可達性等重要的自然約束條件，且求解這些模型的前奏是計算負荷點到變電所的歐幾里得距離（直線距離） ，簡便但不切合實際（這一點在城市電網規劃中尤其重要） ，因此較難給出技術上可行的最優解。
  10. Zeron has been buckling down to press related automation equipment and always provide products that achieve customer ' s cost reduction requirement from 2001, we offer : mechanical press cnc controller, digital cam, die height indicator, crank angle display, tonnage monitor, calibration load cell, and with cabinet ' s total solution for press control

    南京澤榮自動化系統有限責任公司自2001年以來一直致力於壓力機自動控制領域產品的開發、生產和銷售以滿足客戶降低成本、提高效率之需求，我們的產品包括:高速壓力控制系統，電子凸輪，模高指示器，轉角指示器，噸位監控系統，壓機標定系統，以及帶電控櫃的全套控制系統等
  11. The conclusion is drawn that in the quasi two - stage compression heat pump system coupled with ejector, discharge temperature of the compressor is decreased effectively, electric power is reduced, and heating performance is increased compared with those of the flash - tank throttle system in the same conditions. it shows that the quasi two - stage compression heat pump system coupled with ejector improves performances of air - source heat pump in theory

    由結果可以看出:在相同工況下，準二級壓縮?噴射復合熱泵系統可以有效降低壓縮機排氣溫度，所消耗的電功率較閃發器節流系統有所降低，制熱性能有所增加，從理論上說明該系統在解決空氣源熱泵低溫適應性問題上有進一步突破。
  12. Compared with other connection process, it has many advantages, such as simple technics, reliable connection strength, low cost and adapting to connect various kinds of materials etc. by means of increasing the capacitance and decreasing the voltage, we control the discharging energy and apply the low - voltage electromagnetic riveting ( lver ) process to rivets made of some widely used materials

    同其他連接形式相比，其工藝過程簡單、連接強度穩定可靠、成本低並能適應于各種材料之間的連接。本文通過增加系統電容量和降低電壓的手段來控制放電能量，將低電壓電磁成形方法用於常用材料鉚釘的鉚接。
  13. Specific issues examined are : compensation for the variation of the stator resistance, the offset error of the dc bus voltage, the voltage error generated by the forward voltage drop the dead time of the switches, improvement of the steady state performance, and the speed sensorless control for the pmsm dtc drive system are of major concern in this thesis

    定子電阻變化，直流母線電壓漂移，開關器件反向相電壓降、逆變器死區時間引起的電壓誤差的補償，提高系統穩態運行性能以及永磁同步電機直接轉矩控制的無速度傳感器運行方案等問題都是本文研究的重點。轉矩的快速響應是直接轉矩控制演算法的一個卓越的性能。
  14. Control of voltage collapse of a power system

    電力系統電壓驟降特性的抑制研究
  15. The feeder net model for distribution automation is built based on the nod information matrix and the line information matrix, and the nods represent the switches and the fault indicator in the distribution net. the method of fault locating offered by this paper called line fault probability method, which locates fault by calculating the fault probability of line in the net. this paper also provides a method called volts d. c. for restoration and offers the regulation of restoration

    採用節點、支路信息矩陣來描述配電網路，形成面向故障自動化處理的網路數據結構；提出了基於支路故障概率的故障定位演算法，並結合短路電流特性判據法來定位故障支路；在定義直流等值網的基礎上，提出了優化供電恢復的直流電壓降法；開發了配電網故障自動處理軟體系統，並用於實際配電自動化工程中。
  16. High voltage shunt capacitor installation is applied to ac po - wer system with 50hz for raising power factor, adjusting voltage of power grid, reducing transmission loss and raising the efficiency of transmission transformation facilities, so as to improve the quality of power supply

    高壓並聯電容器成套裝置適用於工頻電力系統中，用以提高功率因數調整電網電壓，降低線路損耗，充分發揮設備效力，改善供電質量。
  17. High voltage shunt capacitor installation is applied to ac power system with 50hz for raising power factor, adjusting voltage of power grid, reducing transmission loss and raising the efficiency of transmission trans - formation facilities, so as to improve the quality of po - wer supply

    高壓並聯電容器成套裝置適用於工頻輸配電系統中，用以提高功率因數，調整電網電壓，降低線路損耗，充分發揮設備效率，改善供電質量。
  18. 2. the design of the weighing platform fig. 1 is a sketch map of the platform, four piecesof xy - working table fix on the platform, fixes jack on the working table, controlling xy - working table can control jack move, meeting many kinds of type carriage. location and one - chip computer control

    2設計出控制車廂升降的稱重液壓系統。 3設計稱重液壓系統電氣控制、數據採集系統和計算機控制系統，電氣控製作為輔助控制方式，計算機控製作為主控制方式。
  19. In the power transmission system, reactive capacity and active power is closely related to each other, at feeding power load required active power and reactive capacity. if a mount of reactive capacity could be supplied by far location but no local station, a great deal of reactive capacity and active power would be wasted, and its voltage be descended

    在電力傳輸系統中，無功功率和有功功率是密切相關的，在輸送電力負荷所需要有功功率的同時必須消耗一定量的無功功率，同時輸送無功電力也需要消耗有功功率。如果大量的無功電力不能就地供應，靠長途輸運，就會產生較大的無功和有功損耗及電壓降落。
  20. Reactive power optimization which can improve the quality of system voltage and reduce reactive power loss has not been solved completely because of the complexity of mixed - integer nonlinear programming

    電力系統無功優化控制對于提高系統電壓質量、降低有功網損具有重要的意義。無功優化問題是非常復雜的非線性混合整數規劃問題，一直沒有得到很好解決。
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