無功量 的英文怎麼說

中文拼音 [wúgōngliáng]
無功量 英文
reactive value
  • 無 : 無Ⅰ動詞（沒有） not have; there is not; be without Ⅱ名詞1 （沒有） nothing; nil 2 （姓氏） a surn...
  • 功 : 名詞1 （功勞） exploit; merit; meritorious service [deed]: 戰功 military exploits; 立功 render me...
  • 量 : 量動1. （度量） measure 2. （估量） estimate; size up
  • 無功 : [電學] idle; idle work
  1. Intelligent electricity quantity concentration display instrument is a kind of intelligent instrument used to measure combined parameter of ac electricity quantity, which can simultaneously measure each phase electricity parameter in the tri - phase ac loop such as voltage, current, active power, reactive power, apparent power, power factor, frequency, active kilowatt hour, reactive kilovolt ampere - hour and so on

    智能電量集中顯示儀是一種用於交流電量綜合參數測量的智能儀表，它可以同時測量三相交流迴路的每一相電壓電流有功功率無功功率視在功率功率因數頻率有功電度無功電度等參數。
  2. Reactive power optimization is of great impotae to voltage quality twee, powerloss minimization and thus security and economic operation of power system

    電力系統無功優化對保證電壓質量、降低運行損耗，實現電網的安全經濟運行具有重要意義。
  3. In the paper, the four methods based on the evaluation of source ’ s reactive power are analyzed. those are voltage sensitivity ( vs ), pv curves, back - up generation and equivalent reactive compensation ( erc ) methods

    由此文章分析了四種評估無功容量價值的方法:電壓靈敏度法、 pv曲線法、備用發電量法和等效無功補償法。
  4. Then it leads to lots of reactive shortage. in the northern area, there have adequate capacity for consumer

    而北部地區的發電廠容量相對用戶需求是較大的，無功備用容量較大。
  5. To prepare international standards for electrical energy measuring and electrical load control equipment ( such as watt - hour meters, var - hour meters, maximum demand indicators, telemetering for consumption and demand, equipment for remote meter reading, time switches, equipment for the control of loads and tarifs and consumer services ) including the equivalent electronic forms of these devices and their accessories

    負責制定電能測量和負荷控制設備（如：有功、無功電度表、最大需量指示器、損耗和需量的遙測、遠程抄表設備、時間開關、負荷和費率控制設備及用戶服務等）的國際標準，包括功能相近的運用電子技術實現的設備及其附件。
  6. In the distribution system, many capacitor banks are applied to decrease the loss of the network. the harmonic resonance may be incurred between the network and the capacitor banks in the harmonic frequency, thus the security of the system may be destroyed because of the high harmonic distortion level

    配電網中裝設了大量的電容器進行無功優化來降低網損，但在諧波頻率下，容易產生系統與電容器之間的諧波諧振或諧波放大，從而使系統的諧波畸變率變大，破壞了系統的安全運行。
  7. With the development of the electric power system, static - state reactive power compensators ca n ' t have met the requirements of the actual production and operation, and the trend to the fast and dynamic compensation for reactive power become greater and greater. since ertan hydroplant and 500kv transmission systems in sichuan power system have been operated, many power plants of load center are forced to halt during the high - water period, because the great deal of power is transmitted to far - distance load center. thus the load center loses voltage sustentation and the level of the system stabilization is debased greatly

    四川電網的二灘水電站和500kv輸變電系統投入運行后，由於二灘水電站的大量電力遠距離輸送至負荷中心，迫使負荷中心的火電機組在豐水期大量停機，使負荷中心失去電壓支撐，大大降低了電網的電壓穩定水平；同時，因為四川電網中的無功補償裝置全為靜態無功補償電容器（或電抗器） ，這些設備只能在系統正常運行狀態下起到無功補償和電壓支撐的作用，而在電網出現事故時，不但不能起到電壓支撐作用，反而會促使電網電壓崩潰事故的發生。
  8. In this paper, several scheme of vscf is compared firstly, of which gets doubly - fed generating mode. doubly - fed vscf wind power generating system uses a doubly - fed induction generator, which rotate speed can be able to change with wind turbine, and it ensures a constant - frequency output, by controlling the frequency of current input into rotor windings. in vector trans control system, the control of stator active power and the control of stator reactive power can be essentially decoupled, and the former is via torque component and the latter is via exciting component of stator current

    本文首先比較了幾種變速恆頻方案，從中選擇了雙饋式變速恆頻方案；它運用雙饋電機的工作原理，允許發電機轉速變化，而在電機轉子側接入低頻勵磁電流，通過控制該電流的頻率，保證雙饋電機定子輸出的頻率恆定；再結合矢量控制技術，通過調節轉子電流來控制定子電流的轉矩分量和勵磁分量，相應獨立地控制發電機輸出的有功功率和無功功率。
  9. Taking load uncertainties, infeasibility problem and multiple objection of the reactive power optimization in the radial distribution system into consideration, loads are modeled as fuzzy interval numbers. fuzzy power flow is proposed based on fuzzy interval load for the more practical membership function of line losses rate and maximal voltages offset. this thesis presents multiple objection model of the reactive power optimization considering uncertainties using the fuzzy set theory

    對配電網電壓無功優化問題中負荷的非概率性的不確定性問題、多目標問題、約束不可行性問題進行了研究，用模糊區間來描述實際的負荷情況，並用負荷的模糊區間值計算配電網的潮流，得到有功功率損耗和電壓的模糊區間值，使網損率和節點電壓最大偏移量的隸屬函數更接近實際情況；將改進遺傳演算法與模糊集理論相結合，通過求解多目標函數和約束條件的模糊集合的交集，得出網損率和節點電壓最大偏移量最小的最優運行狀態。
  10. The theses discussed the energy management system from three aspects : line loss calculation, flow calculation and reactive power optimize

    論文僅從三個方面對農村配電網能量管理系統進行了論述：線損計算、潮流計算、無功優化。
  11. At the present time, where to set shunt capacitor is based on it where to benefit overhaul and running. the criterion is whether the voltage acheieves the national standard. it is based on engineering actuality and tries gaining more practical ways and program by linking theory with practice

    本文從工程實際出發，把多年工作經驗與控制理論結合起來，力求為設計及運行管理人員提供簡便實用的配置方法及程序，並運用控制理論對無功補償容量、位置進行優化，力求能得到把理論性和實用性結合起來的方法和程序。
  12. This disquisition aimed at plc reactive dispatch curve controller, associating the entire exploiting process, expounded in guiding ideology, control standard, function and structure design, software system design, analog experiment, fixing and debugging and so on, also part of flow schematic diagram ( the ladder chart was n ' t drawn because of too many network and length limit ). this design involves many subject such as power systenu automatic control microcomputer control and electroa during the design, we have read a great deal of concerned data, base on the sufficient investigation analysis and research, associating the practicality of huanren power plant, we introduced and exploited plc reactive dispatch curve controller in the first time

    本文針對plc無功調度曲線控制器，結合整個研製過程，在設計指導思想、控制準則、性能設計、裝置構成設計、軟體系統設計等方面進行了闡述，並給出了部分程序流程簡圖（由於梯形圖網路數太多，受篇幅限制沒有給出） 。本設計涉及到電力系統、自動控制、微機控制、電子等多學科知識，在設計過程中，我們查閱了大量相關的資料，在充分調查、分析、研究的基礎上，結合桓仁發電廠實際情況，首次提出並研製出了plc無功調度曲線控制器。
  13. Successive linear programming is proposed to solve it with the help of lindo6. 1 program. digital tests are carried out and results show that the algorithm is practical and efficient for distribution systems loss minimization and can be used to optimize real distribution system operation

    在求解過程中，結合了線性規劃模型演算法程序lindo6 . 1 ，並引入迭代步長控制系數k ，對控制變量的增量作有效的調整，同時，選取就地無功平衡點作為迭代初值。
  14. Determination of the optimum wattless compensation capacity

    最佳無功補償容量的確定
  15. Direct acting indicating analogue electrical measuring instruments and their accessories part 3 : special requirements for wattmeters and varmeters

    直接動作指示模擬電氣測量儀器及其附件.第3部分:瓦特計和無功功率計的特殊要求
  16. The control tactics of space voltage vector are investigated, and the simplified algorithm which judges the sector location of reference vector and calculates switch operation time is put forward. by analyzing the current hysteresis control, the relation between switch frequency, and hysteresis bandwidth and input inductance of pwm rectifier is deduced. by applying instantaneous power theory, the principle of pwm rectifier power control is analyzed, and the direct power control by matlab toolbox through estimating active power and reactive power with virtual flux is realized, and the simulation results prove that it is correct

    對常用空間電壓矢量控制策略進行分析，提出了給定參考矢量所在區間判斷的簡化方法，以及電壓矢量作用時間的求取方法；分析了電流滯環控制策略，推導出開關頻率與滯環帶寬以及整流器輸入電感之間的關系；應用瞬時功率理論分析pwm整流器功率控制原理，通過虛擬磁鏈估計有功功率和無功功率，用matlab實現了直接功率控制，並驗證了該控制方法的正確性。
  17. During the traditional measurements of the reactive power, the asymmetry of the voltage and current arises the asymmetry error

    傳統的三相無功功率測量中的由電壓、電流不對稱引起的「不對稱誤差」 ，長期以來一直是個難以解決的問題。
  18. So large quantities of power energy has to be transferred from the north to the south

    這就要求從北部往南部輸送大量的電能。在電網輸送過程中造成了較大的無功功率缺額。
  19. ( 3 ) this paper independently developed a especial memory database for reactive optimal software with the visual c + + 6. 0 fundamental database class. the storage of data is implemented through serialize and the management of data is implemented in memory to minimize the data storage and increase the speed of read / write. all of those are foundation of acquisition and transmission of text data and graph data

    （ 3 ）本文結合visualc + + 6 . 0內部的基本數據庫類，獨立開發了無功優化軟體的專用內存數據庫，數據的存儲通過序列化機制來完成的，數據的管理則完全在內存中進行調度，從而減少了數據的存儲量，提高了數據的讀取速度，為本文無功優化軟體的本文和圖形數據的提取和網路傳輸提供了良好的基礎。
  20. This paper describes mainly system functions, measuring methods, circuit design, software program and errors analysis of a new type of measuring instrument. this instrument can measure and monitor electric parameters in single - phase circuits, three - phase ( three - wire or four - wire ) circuits. this system can be applied to electric devices and power plants, transformer substations with harmonic pollution. it can measure current, voltage, power, energy, frequence, power factor etc. it also can detect load quality, phase sequence, alarm, display and print results, as well as detect and dispose negative power

    該儀器適用於含有諧波污染情況下的機電設備現場、發電廠、供電局、企業變電所現場，可用來測量電流、電壓、有功功率、無功功率、視在功率、有功電能、無功電能、視在電能以及頻率和功率因數等電參數，並具有負載性質（感性、容性）判別，正、逆相序判別指示功能；超限報警功能；列印記錄功能和負功檢測及處理功能。
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