無功功率測量 的英文怎麼說
中文拼音 [wúgōnggōnglǜcèliáng]
無功功率測量
英文
wattless power measurement- 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...
- 率 : 率名詞(比值) rate; ratio; proportion
- 測 : 動詞1. (測量) survey; fathom; measure 2. (測度; 推測) conjecture; infer
- 量 : 量動1. (度量) measure 2. (估量) estimate; size up
- 無功 : [電學] idle; idle work
- 測量 : measure; survey; gauge; meter; measurement; measuring; surveying; mensuration; metering; gauging;...
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That the antenna points at the aerocraft very precisely can utilize the gain of antenna, minishing the power of transmitter, and propagating data very gualitily effectly
在無線測控系統中,天線精確指向飛行目標,可最佳利用天線增益,減小發射功率,高質量的進行控制和數據傳輸。Presently, the world largest scale and most influential brand meeting : 2004 international vehicle maintenance equipment exhibition attracts exhibiters from more than 100 countries and regions in the world to participate the conference in german frankfort. zonda auto group, the leader in chinese maintenance trade, introduced the new product which behalf the international advanced technology, such as paint equipment, became the spot light on the exhibition. the new product zd - 900 of zonda is a new - type of energy - conserving product, adopt international advanced technical, the heat system which the core parts of the product meet the high level demand
車輛行駛時,可利用富餘功率給電池充電,無需停車充電,也不必增加充電站該車每100公里油耗僅22 . 4升,比同等噸位的燃油汽車節油30 % ,加滿一箱油可行駛650公里尾氣排放達到了歐標準維修費用僅為燃油車的1 3該車在國家汽車質量檢測中心通過了54項強制性試驗,下線后已行駛1 . 7萬公里,表現出了良好的安全性能。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。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。In the experiment, we use the he - ne laser and the semiconductor laser as the source, record the bessel beam patterns behind the axicon by using a digital camera and a microscope, measure the radius of the bessel beam central spot by film - scanning and measure the effect of both the radius of the aperture and the open angle of the axicon on the maximum non - diffraction distance. the experiments show that a specific propagating range has constant power and the beam has a bessel - like distribution in this range. the results agree with the beam corresponding to a diffraction free beam
同時我們還採用膠片掃描的方法測量了無衍射光束的中心光斑尺寸,測量了不同光闌孔徑和不同稜角情況下的最大無衍射距離和傳播軸附近橫截面內微小光孔中的光強,實驗結果顯示當激光光束經過軸棱錐轉換後有一段距離功率變化很小,且分佈近似貝塞爾分佈,符合無衍射光束的特性;經過聚焦后,呈現三維分佈中空的光束bottlebeam ,實驗結果與理論分析基本吻合。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。Methods of measurement for radio equipment used in satellite earth stations - part 2 : measurements for sub - systems - section ten - high - power amplifier
衛星通信地球站無線電設備測量方法第2部分:分系統測量第十節:高功率放大器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。On the analysis of the theory of instantaneous reactive power, the paper brings forward a new harmonic detection method based on multiple frequency transform. the detection theory of positive sequence harmonic and negative sequence harmonic is respectively proved in detail. the correlative concepts are defined and the simulation validates the feasibility of this method
本文在分析瞬時無功功率理論的基礎上,提出了一種基於倍頻旋轉變換的諧波測量方法,分別針對正序和負序分量,從理論上證明了該方法能分離出單個的諧波,給出了相關量的定義,最後通過模擬驗證了該方法的有效性。A new full - wave measurement circuit structure is put forward that would increase distribution automation system reliability and veracity. the distributed protection and monitoring unit in this paper can instead of general instruments of low voltage distribution system. it not only combines ampere meter, voltage meter, active power meter, reactive power meter and power meter, frequency meter into a meter, but also increases monitoring position switch, control bus switching alternately and monitoring energy
本文研製的保護和測控單元,可替代低壓配電系統中所使用的常規儀表,將原來迴路需要的電流表、電壓表、有功功率表、無功功率表和功率因數表、頻率表簡化為一塊表,並增加了位置開關量檢測,控制母線投切和電度監測功能,從而極大的簡化了低壓配電二次儀表設計、安裝調試,提高了運行、維護和管理水平。In this way, the wattless power of the test signal at the head spot of the fault is only needed to sample when the system fault occurs, which simplifies the measurement
這樣,當系統發生故障時,只需採集故障首端測試信號的無功功率,大大地簡化了測量的方法。Intelligent tri - phase ac active reactive power instrument adopt advanced microprocessor carry out smart control, and to the inputed tri - phase ac voltage and current signal carry out accurate measurement, through cpu automatically count out the tri - phase ac active reactive power value total power, conduct clear and visual display by high brightness led display tube, it can be simultaneously transferred to standard voltage current signal to transmit output, and have super - limit control alarm standard serial communication function etc
智能三相交流有功無功功率儀表採用先進的微處理器進行智能控制,對輸入的三相交流電壓與電流信號進行精確的測量,經過cpu自動計算出三相交流有功無功功率值總功率,由高亮度led數碼管進行清晰直觀的顯示,同時可轉換成標準電壓電流信號變送輸出,並具有超限控制報警標準串列通訊等功能。On the base of it, a piece of data collection special chip with a core of fft is designed with vhdl ( vhsic hardware description language ) in the way of top down system design method, which can finish harmonic analysis and measure the voltage, current, frequency and power of the electric power system
在此基礎上,使用標準的硬體描述語言vhdl設計出一個fft變換內核,並以該內核為核心、採取自上而下的系統設計方法完成了一個電力系統數據採集專用晶元的設計,實現對電力系統的電壓、電流、頻率、有功和無功功率等參數的測量以及各次諧波分析。The study makes simulation experiments under different operating mode, and the results prove the correction and reliability of the simulation model of this sensorless vector control system based on reactive power mras speed observer
本研究作了各種工況下的模擬試驗模擬,結果驗證了所建立的基於無功功率mras轉速觀測器的無速度傳感器矢量控制系統模擬模型的正確性。Based on the large disturbance equation and using the measured power angle as an observation argument in an identification algorithm, the electrical parameters and mechanical parameters are obtained. in this thesis, micro - computer testing systems for synchronous generator is analyzed. withmcs - 196 series single chip micro - controller of high price performance ratio, a high precision, intelligent instrument for automated testing has been developed
設計了同步發電機參數測試儀器,完成了利用發電機定子電壓電流的波形,辨識發電機參數的計算機軟體,該裝置運用鎖相環技術自動跟蹤和獲取電量頻率,進行交流采樣,利用傅立葉演算法求得電量基波的幅值、有效值,從而可獲得三相有功功率、三相無功功率以及功率因數。A method of inspecting the harmonics based on instantaneous reactive power is presented
該方法可以實現快速的檢測出諧波分量,並補償無功功率。Intelligent single phase ac active reactive power double way instrument adopt advanced microprocessor carry out smart control and to the simultaneous inputed single phase ac voltage and current signal carry out accurate measurement, through cpu automatic count the single phase ac active power value, reactive power value, which is displied clearly and visually by the high brilliance led digital tube or high resolution light column, uper screen display active power and down screen display reactive power, and can select serial communication function
智能單相交流有功無功功率雙路儀表採用先進的微處理器進行智能控制,對同時輸入的單相交流電壓與電流信號進行精確測量,經過cpu自動計算出單相交流有功功率值,無功功率值,由高亮度led數碼管或高解析度光柱進行清晰直觀的顯示,上屏顯示有功功率下屏顯示無功功率,並可選擇串列通訊功能。Intelligent three phase ac active reactive power instrument adopt advanced microprocessor carry out smart control and to the simultaneous inputed three phase ac voltage and current signal carry out accurate measurement, through cpu automatic count the three phase ac active power value, reactive power value, which is displayed clearly and visually by the high brilliance led digital tube or high resolution light column, uper screen display active power and down screen display reactive power, and can select serial communication function
智能三相交流有功無功功率儀表採用先進的微處理器進行智能控制,對同時輸入的三相交流電壓與電流信號進行精確測量,經過cpu自動計算出三相交流有功功率值,無功功率值,由高亮度led數碼管或高解析度光柱進行清晰直觀的顯示,上屏顯示有功功率下屏顯示無功功率,並可選擇串列通訊功能。Intelligent single phase ac active reactive power instrument adopt advanced microprocessor carry out smart control and to the simultaneous inputed single phase ac voltage and current signal carry out accurate measurement, through cpu automatic count the single phase ac active reactive power value which is displayed clearly and visually by the high brilliance led digital tube or high resolution light column, and can select serial communication function
智能單相交流有功無功功率儀表採用先進的微處理器進行智能控制,對同時輸入的單相交流電壓與電流信號進行精確測量,經過cpu自動計算出單相交流有功無功功率值,由高亮度led數碼管或高解析度光柱進行清晰直觀的顯示,並可選擇串列通訊功能。分享友人