相量 的英文怎麼說
中文拼音 [xiāngliáng]
相量
英文
complexor-
The symbolic electric circuit analysis using matlab
用相量法分析正弦穩態電路Study on the synthesis of corundum - mullite - gahnite multiphase materials by two - step sintering process using kaolinite as raw material showed that impurities introduced by kaolinite mainly increased the liquid amount at high temperature, which can assist sintering of specimen. the experiment results indicated that the samples with lower gahnite content had better sinterability than others. however, if the gahnite content was relative high, the promoting effect on sinterability caused by kaolinite was not significant
採用天然原料高嶺土二步煅燒合成剛玉?莫來石?鋅鋁尖晶石復相材料研究發現：天然原料中帶入的雜質主要是增加液相量，促進高溫下試樣的燒結；當尖晶石含量較低時，試樣在1300保溫2h時，在1600燒后試樣燒結性能相比之下較好；而當鋅鋁尖晶石含量較高時，天然料對試樣的促燒作用不是非常明顯。Through analyzing and researching the problem of variable frequency to working frequency of high - power electromotor in theory, the key of conversion is pointed out in the paper. on the basis of analyzing equivalent circuit diagram and vector - diagram of induction - motor, the phase of working frequency power whether or not consistent with the output phase of variable frequency power at the moment of conversion is the key to decide whether the conversion is successfully
本論文針對大功率電機變頻轉工頻轉換存在的問題在理論上作深入細致的研究，根據感應電動機的等效電路和相量圖分析，指出大功率電機變頻轉工頻能否成功，關鍵在於變頻轉工頻瞬時，工頻電源和變頻輸出電源是否相位一致。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。This modeling method is applicable to most of facts and hvdc devices, not only to those devices including thyristor - controlled reactor ( tcr ), such as thyristor - controlled series capacitor ( tcsc ) and static var compensator ( svc ), but also to those devices including converter bridge, such as hvdc device and static synchronous compenstor ( statcom ), etc. it deduces the mathematical models of tcsc, hvdc, svc and statcom devices with the proposed method
該方法能適用於大多數facts裝置和hvdc裝置，不僅可用於含有晶閘管可控電抗器（ tcr ）元件的裝置如可控串聯電容補償（ tcsc ） 、靜止無功補償器（ svc ）等的建模，也可用於含換流橋的裝置如hvdc裝置、靜止同步補償器（ statcom ）等的建模。本論文採用動態相量法建立了tcsc 、 svc 、 hvdc及statcom裝置的數學模型。The variation of db magnitude attenuation and phase delay of reflection is uniformly proportional to distance along the line toward the direction of reflection, where the phase delay is 360 degree per wave length, the db attenuation per meter is twice the one way db attenuation per meter of forward or backward wave
沿傳輸線之反射，即反向傳播與正向傳播電壓沿傳輸線之相量比，其相位落後及分貝衰減沿反射方向之變化則正比于線長，相位落後為每半波長三百六十度，每米之分貝衰減為正向波或反向波單程每米之分貝衰減之兩倍。Various perovskite compositions have been prepared through this method and their structure, electronic and magnetic properties have been studied. in this paper, la2o3, sro2i mn, naclo4, kmno4 were used as raw materials and were synthesized into la1 - xsrxmn03 powder by employing self - propagating high - temperature synthesis ( shs ) technology and filtration processing. in addition, the mechanism of chemical reaction and microstructure formation process of la2o3 - sro2 - mn - naclo4 - kmno4 system was studied
La _ （ 1 - x ） sr _ xmno _ 3的shs合成工藝研究發現，在shs合成過程中液相量的多少和反應溫度有很大的關系，通過在反應體系內加入第二相氧化劑kmno _ 4可以控制反應進程， kmno _ 4在反應中分解得到的高活性mno _ 2利於產物的生成，一定程度上避免了氧缺位和中間產物的形成。Models with different measurements precision based on phasor measurements are built. as for measurements with low precision, the voltage phasor of nodes with pmus are iterated as state variables. as for the measurements with enough precision, the measurements of pmu are regarded as state results directly
在此基礎上，建立了基於相角量測的狀態估計模型，對不同精度的pmu量測值採用不同的狀態估計模型， pmu精度較低時，在增加量測量冗餘度的同時， pmu所在節點的電壓相量仍然作為狀態變量參加迭代； pmu精度足夠高時，直接將pmu的量測值作為狀態估計的狀態解， pmu所在節點的電壓相量不參加狀態估計。Phasor measurement unit, pmu
系統和相量測量單元Influences of measured values from phasor measurement units on equivalent current based measurement transform algorithm in state estimation
相量測量單元測量值對狀態估計中等效電流量測變換演算法的影響The main factors to choose connection mode of rectifier unit are discussed. the vectorgrams of transformer in different connection modes and the output voltage waveform after rectifying are analyzed
摘要闡述了選擇整流機組接線方式時需考慮的主要因素，分析了採用不同變壓器聯結方法的相量圖以及整流后輸出的電壓波形。The ideas on vectorgram of potential distribution in induced overvoltage withstand test are put forward. based on some induced overvoltage withstand test methods, the potential distribution vectorgrams are drawn
摘要對變壓器感應耐壓試驗電位分佈相量圖提出了自己的見解，並結合幾種常用的感應耐壓試驗方法，畫出了相應的電位分佈相量圖。The paper presents another definition of dynamic phasor, i. e., dynamic phasor. based on park transformer and points out the relationship between dynaxnic phasor based on park transformer and dynarnic phasor based on fourier coefficient which is deflned by another person
本文提出了park變換意義下動態相量的概念，並指出park變換意義下的動態相量與前人所定義的動態相量，即傅立葉系數意義下的動態相量之間的關系。However, as to the expressions of the real or image parts of the phasor, there are many problems in the relevant documents published in recent years
但從近幾年發表的相關傅氏演算法的文獻來看，很多文章中關于信號相量的實部和虛部表達式有錯誤。After detailed analysis, the correct expressions are formulated and what the false expressions will bring about to the microcomputer protection is discussed
這里通過詳細的數學推導，給出了在不同數學模型下信號相量實部和虛部的具體表達式，並討論了各種錯誤在微機保護應用中帶來的問題。State estimation model with pmu current phasor measurements
支路電流相量的狀態估計模型Power systems transient stability control based on gps synchronous phasor measurements
同步相量的電力系統暫態穩定預測控制Research on the estimation of conversion state of equivalent current test based on phasor measurement
基於相量測量的等效電流量測變換狀態估計的研究Analysis of the sine steady circuit by means of vector graph
正弦穩態電路的相量圖解法A dft - based method for phasor and power measurement in power systems
的電力系統相量及功率測量新演算法分享友人