電力系數 的英文怎麼說

中文拼音 [diànlìxìshǔ]
電力系數 英文
drag coefficient
  • 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...
  • 力 : Ⅰ名1 （力量; 能力） power; strength; ability; capacity 2 [物理學] （改變物體運動狀態的作用） forc...
  • 系 : 系動詞（打結; 扣） tie; fasten; do up; button up
  • 數 : 數副詞（屢次） frequently; repeatedly
  • 電力 : [電學] power; electric power電力變阻器 power rheostat; 電力捕魚 electrofishing; 電力潮流 directio...
  • 系數 : [數學] coefficient; ratio; modulus; quotient; factor
  1. On this basic, it come out rs485, bitbus application casus to distribution watch system. this system make up real time watch system and data manage net system by bitbus communication to complete detract check and focus show function of high low electric power parameter. it take on task of background communication and proscenium data manage

    該方案應用bitbus現場總線構成一個完整的實時監控和數據管理網路系統，完成高、低壓配電室電力參數的分散檢測和集中顯示等功能，上位機同時承擔后臺通訊和前臺數據管理任務，前後臺并行工作，該方案在某汽車製造廠配電系統中得到了較好的應用。
  2. The paper presents a distribution analysis software platform which is developed combining computer graphical theory and oop ( object - oriented programming ). the platform includes three modules, the graphics module, the database module and the computation module. the graphical module can draw the key diagram of power system ; the database module can save, browse and edit the data of power systems ; the computation module can compute the power flow

    本文運用面向對象的程序設計方法結合計算機圖形學的知識，開發了一套可視化配電網分析軟體平臺，它包括用於繪制電力系統結線圖的圖形模塊、用於保存、瀏覽、修改電網數據信息的數據庫模塊和進行配電網潮流計算的計算模塊。
  3. This paper presents a new interior point nonlinear programming algorithm for optimal power flow problems ( opf ) based on the perturbed kkt conditions of the primal problem with a novel data structure

    基於原問題的擾動kkt條件，本文提出了一種帶新數據結構的原始對偶內點演算法求解電力系統最優潮流問題。
  4. Pss parameters setting and field test on tubular turbine unit

    發電機組的電力系統穩定器參數整定試驗
  5. The device has more advantage than traditional adjustable ac high voltage design. it adopts adjustable method to make adjustable series resonance even easier and the change extend of tested much wider. it is fit to test the majority of electricity system design

    該裝置與傳統的調感式交流高電壓裝置相比具有更多優點，採用調頻方法使調節諧振更容易，被試品的變化范圍可以更大，適合大多數電力系統裝置的試驗。
  6. This article has studied the deficiency and shortcoming of various kinds of methods of the parameter measurement of transmission line at present, proposed the measurement under operation on the basis of gps, researched gps application way and error that may appear in the power system synchronal sampling, put forward the parameter computing technology based on the information of both sides of transmission line, which solved some problems that exist in the parameter measurement, especially the problem that exist in the zero - sequence parameter measurement of transmission line with mutual inductance

    本文研究了目前輸電線路參數測量的各種方法，分析了其中存在的不足和缺點，提出了基於gps的輸電線路參數在線測量方法，研究分析了gps在電力系統同步采樣中的應用方式以及可能出現的誤差，在同步采樣的基礎上提出了基於雙端信息的線路參數計算方法，較好地解決了輸電線路參數測量中存在的一些問題，尤其是多回互感線路零序參數測量困難的問題。
  7. The more important character of our product is single intelligent relay can connect to the can bus as a node and communicate with each other digitally. then we can realize long - distance monitoring and displaying the state of else intelligent relay nodes, set and modify their action parameters and states as well as analyze, memorize and deal with the data from low intelligent nodes. our design will surely improve the function of relay and accord with the requirement of power system

    這樣我們在總線上接入上位監控pc機節點，就能通過總線通信實現對所有下位智能繼電器節點的遠程狀態監控，對下位節點的動作參數和動作狀態進行遠程設定和控制，還可以對下位節點上傳的採集數據進行存儲、分析和處理，使繼電保護的功能更趨于完善，符合電力系統的要求。
  8. Yurong chen, dayong cai. inexact overlapped block broyden methods for solving nonlinear equations. applied mathematics and computation, 136 （ 2 - 3 ） （ 2003 ） 215 - 228

    陳玉榮.大型非線性方程組的演算法及在電力系統中的應用： [博士學位論文] .北京：清華大學數學科學系. 2002
  9. This paper uses embedded internet technology, computer networking technology, power line data transferring technology, organically combines the tcp / ip basing computer networking architecture and plc basing bus architecture, import agent idea and finishes the designation, implementation and debugging of ia supervising system, which controls appliance through lan and internet in real time

    本文採用嵌入式internet技術、計算機網路技術、電力線數據通信技術，將基於tcp ip協議的計算機網路結構與基於plc （ powerlinecommunication ）的總線結構有機地結合起來，引入agent思想，構建了家電監控網路，進行了家電網路監控系統的硬體軟體的設計、製作和調試，能實現在局域網乃至internet網上對家電的實時監控。
  10. A short circuit calculation software has been developed by setting up visual mathematic model of power network, providing the criterion of the choosing of the equipments under high - handed electricity power transmission and distribution for ptcad2000

    通過建立可視化的電網數學模型，程序實現了電力系統下短路故障的計算和分析，為在ptcad2000平臺下高壓輸配電網的設備選型提供了依據。
  11. The development of a visual short circuit software under ptcad2000 is presented in this paper, as well as the system structure, the definition of the data structure, the interface to ptcad2000, the conversion of the original wiring diagram of power network to calculable power network, the implement of three sequence network, the implement of impendence matrix and admittance matrix of power network considering the zero sequence mutual inductances among lines, and the implement of short circuit calculation by using computer

    本文介紹了在ptcad2000平臺下短路電流可視化計算軟體的開發。介紹了軟體的系統結構、數據結構定義、與ptcad2000平臺的介面、電力系統原始接線圖轉成等值可計算網路、序網的生成、考慮零序互感線路阻抗時電網導納矩陣和阻抗矩陣的生成，以及故障點短路電流計算的計算機實現。
  12. Numerical simulation method on drag characteristic of air amp; amp; flue gas ducts ' irregular parts in power plants

    電廠煙風道異型件阻力系數的數值計算方法
  13. Ln power system full dynandc simulation, the electric - mechanical transient processes of dynamic elements of power system should be simulated in detail, and the detailed dynandc models of mid - term and long - term processes are necessary based on the research and analysis for the ndd - term and long - term models, the dynandc models, such as thermal power plant, hydraulic power plant, nuclear power plant and the automatic generation control ( agc ), which are necessary to power syst

    電力系統全過程動態模擬除了需要詳細模擬電力系統動態元件的機電暫態過程外，還要有詳細的中長期過程的模型。本文在綜合調查和分析的基礎上，研究了電力系統全過程動態模擬所需要的火電廠動力系統的數學模型、水電廠動態模型、壓水堆核電站模型以及自動發電控制（ agc ）模型及其演算法，並在電力系統全過程動態模擬軟體中得到了實現。
  14. The third generation of scada, based on the technology of distributing computer net and relation data base, could realize the large - scale internet connection, which is currently applied in data collection, surveillance control and processing control in the fields of electric power system, water supply system, petroleum and chemical industry etc. the fourth generation of scada would adopt the internet technology, object oriented technology, neural network as well as java technology as its main development tendency, aiming at enlarging the integration of scada and other systems, which could finally meet the needs of business management and integrated security economic circulation

    現在的基於分散式計算機網路以及關系數據庫技術的能夠實現大范圍聯網的第三代scada系統被廣泛應用於電力系統、給水系統、石油、化工等領域的數據採集與監視控制以及過程式控制制等諸多領域。第四代scada系統的主要發展趨勢是採用internet技術、面向對象技術、神經網路技術以及java技術等技術，繼續擴大scada系統與其它系統的集成，綜合安全經濟運行以及商業化運營的需要。
  15. This paper deduced the harmonic parameter models of electrical transformers, generators, transmission lines and electrical loads in detail

    本文較為詳細的推導了電力變壓器、發電機、輸電線路、電力系統負荷等的諧波參數模型。
  16. The safety of transmission line plays a important role in power system safety it is not only the requirement of ensure supply power reliability, but also the necessary precondition of enhance power system stabilization, to remove faulty line quickly and accurately, also keep non - faulty line continuous work when some transmission line faults current differential protection is a kind of simple, reliable and good - selective protection manner to any variety of transmission lines, power system development needs current differential protection apply to transmission lines, moreover the advancement of electric and communication technology enable current differential protection apply to transmission lines firstly, the paper discusses, analyses the research and application transmission line protection in detail, compare the principle and realistic presupposition of general line pilot protections secondly, because conventional current vector differential protection are influenced easily by load current and transitional resistance, in order to at the same time quicken protection act, the principle and criterion include work characteristic of differential protect based on fault component sampled values are studied, results shows that differential protect based on fault component sampled values excels general vector current differential protection in reliability, sensitivity and anti - saturation of current transformer in addition, synchronous current sampling methods at all terminals of line is analyzed and estimated lastly, the principle and criterion. also device design about current sampling values differential protection based on optical fiber communication, which apply to short transmission lines are concretely investigated,

    基於基爾霍夫定律的電流差動保護無論對於何種形式的輸電線路都是一種簡單、可靠、選擇性強的保護形式，電力系統的發展使得電流差動保護應用於線路保護成為需要，而電子、通信技術的發展使得電流差動保護應用於輸電線路成為可能。首先，本文對目前線路保護的研究和實際應用情況進行了討論和分析，比較了常用線路縱聯保護的實現原理和實現條件及優缺點。其次，針對常規相量電流差動保護易受正常負荷電流和故障過渡電阻影響的缺點，同時為加快差動保護的動作速度，對基於故障分量瞬時采樣值電流差動保護的原理、判據、動作特性等作了討論和分析，結果表明基於故障分量瞬時采樣值電流差動保護在可靠性、靈敏度、抗電流互感器飽和方面明顯優于常規相量電流差動保護，對電流差動保護各端的同步采樣方法和數據通信也進行了分析和評價。
  17. In this thesis, summarized the basic theories of fourier transformation and the fast fourier transformation that are generally adopted to detect and analyze the electric power harmonic in the electric power supply system. at the same time, summarized the even sample principle, the phenomenon of frequency mix, the window functions and the frequency leaking as so on, those are closely - related to sample from figure signal

    簡要闡述了電力系統諧波檢測分析所普遍採用的傅利葉變換和快速傅利葉變換的基本理論以及與數字信號采樣密切相關的均勻抽樣定理、頻譜混疊現象、窗函數和頻譜泄漏等的基本理論。
  18. Summarized no - line loads and the present situations of the electric power harmonic pollution in the guangyuan district ' s electric power supply system ; explained the theories of fourier transformation and the fast fourier transformation those are widely adopted by majority scholars to examine and analyze the electric power harmonic in the electric power supply system. summarized the principle of even sample, the frequency mix phenomenon, the window functions and the frequency leaking as so on, those are closely - related to the figure signal

    簡要闡述了電力系統諧波檢測分析所普遍採用的傅利葉變換和快速傅利葉變換的基本理論，簡要闡明了與數字信號采樣密切相關的均勻抽樣定理、頻譜混疊現象、窗函數和頻譜泄漏等的基本理論，同時闡述了電力系統的諧波檢測與分析的相關理論基礎知識。
  19. Conventional power system stabilizer ( cpss ) has such shortcoming as complex design, fussy parameter testing, poor adaptability and so on. in this article formula fuzzy control algorithm is put into the design of pss. quantified factors and modifying factors, which have large effect on the performance of formula fpss, are optimized

    本文針對傳統電力系統穩定器（ cpss ）設計復雜、參數調試繁瑣、適應性差等缺點，將一種公式型模糊控制演算法應用於pss設計，並對公式型模糊電力系統穩定器的性能影響較大的量化因子和修正因子進行優化，從而設計出一種自尋優模糊電力系統穩定器（ sofpss ） 。
  20. The main content that this paper studied inludes : development of gis and its application in the power industry ; gis data model analysis, the expression and operation of the distribution data in electric gis ; the structure of electric gis database and design, coding methods of data ; topological analysis of the distribution network ; gis and scada integration, mainly researches into scada and gis interface, discusses purpose and benefit for integration of them by analysis of scada system and its database used by to haikou local dispach

    Gis數據模型分析，電力gis中配電數據的表達和操作;電力gis數據庫的結構和設計、數據的編碼方法。配電網路拓撲分析。 gis與scada集成，主要研究scada與gis介面，並針對海口地調的scada系統及其數據庫，討論兩個系統集成的目的和益處，對兩個系統的連接提出實現技術。
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