reactive current 中文意思是什麼
reactive current
解釋
無功電流-
In this thesis, the development of emulsion polymerization theory and related new technologies are comprehensively reviewed, and the synthetic technologies of acrylate latex modified by organosilicon both at home and abroad are also reviewed. based on the current development and research in this field, attentions of this study are focused on three ways for preparing novel acrylate latexes modified by organosilicons, that is, 1 ) the acrylate monomers are copolymerized with unsaturated silicons by emulsion copolymerization ; 2 ) a new latex with microphase separation morphology is synthesized, which shows a core - shell structure character ; 3 ) soap - free polymerization is explored for preparing a higher - performance latex using an unsaturated silicon monomer, different acrylates and a reactive emulsifier. by using techniques of delaying addition of organosilicon monomer and a hydrolysis inhibitor, the hydrolysis and condensation of 3 - ( trimethoxysilyl ) propyl methacrylate during polymerization can be effectively prevented, as a result, organosilicon content in the macromolecular chain is increased
同時採用有機硅單體延遲滴加及添加水解抑制劑等技術，有效防止了-甲基丙烯酰氧基丙基三甲氧基硅烷在乳液聚合過程中的過渡水解及縮合反應，提高了聚合物大分子鏈中有機硅鏈節的含量；利用紅外光譜與差示掃描量熱儀對產物分子結構進行了表徵，並通過對共聚產物力學和吸水率的測試，證實了本研究所制備的有機硅改性丙烯酸酯共聚物具有比純丙烯酸酯聚合物更優良的力學及耐水性能；從分子設計角度出發，利用醇解反應合成出水解、縮合反應速率較慢的兩種新型不飽和有機硅單體： ?甲基丙烯酰氧基丙基三乙氧基硅烷和?甲基丙烯酰氧基丙基三異丙氧基硅烷；利用核磁共振對新型硅烷單體結構進行了證實；研究表明利用新型硅烷單體可以制備出高硅烷含量的有機硅改性丙烯酸酯乳液，且其聚合產物具有較高的力學及耐水性能。 -
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。 -
It not only solves the problem of optimized control of the reactive current exchanging among branches, in other words, realizes the auto - tracking to the reactance factor, but also greatly improved the reliability of the system. to design the high voltage line wireless signal acquisition device with self - feed source, we applied electromagnet induction principle and digital communication technique
系統在優化控制技術中採用了電容器補償控制的兩段控制模型，不僅解決了分支線路之問穿越無功電流的最優控制問題，實現了功率因數的自動跟蹤，而且使整個系統的可靠性大大提高。 -
The reactive power compensation is an important engineering in the power system. the active reactive power compensator designed in this text takes the instantaneous reactive power theory of three - phase as foundation, and is formed by the reactive current testing circuit, current tracking control circuit and the main circuit, and among them the current tracking control circuit is formed by instruction current arithmetic circuit, current polarity checkout circuit and current tracking control logic circuit three parts in the circuit form
無功功率補償是電力系統中的一項重要工程，本文所設計的有源無功功率補償器是以三相瞬時無功功率理論為基礎的，它由無功電流檢測電路、電流跟蹤控制電路和主電路三大部分組成，其中電流跟蹤控制電路由指令電流運算電路、電流極性檢測電路和電流跟蹤控制邏輯電路三部分構成。 -
By studying traditional instantaneous power theory in single - phase circuit, we developed a real - time detecting method in this paper based on digital technology, which can detect harmonic current and fundamental reactive current in both single - phase and three - phase circuits
本文通過對于單相電路瞬時功率理論的分析研究，提出了一種基於數字技術的單相和三相電路諧波和無功電流的實時檢測方法。 -
Thus the reactive compensator can be located in the center of the distributed load in the area and make the best user of the compensator ' s capacity. the distance flowed by the reactive current is efficiently reduced and the active loss of power net goes down. two - stage control model is adopted in the optimized control technique of the system
該系統採用了測量點與補償點與分開的方式，實現了區域性無功負荷監視，使無功補償點可以安置在區域性分散負荷的中心部位，最大程度地利用了補償容量，有效地縮短了無功電流傳輸的距離，降低了電網的有功損耗。 -
Among them, the action of the reactive current testing circuit is testing the reactive current component in the compensated object current
其中，無功電流檢測電路的作用是檢測出補償對象電流中的無功電流分量。 -
An improved harmonic and reactive current detecting method
一種改進型諧波和無功電流檢測方法 -
Unified model based harmonics and reactive current detection
基於統一模型的諧波及無功電流檢測 -
For this reason, we redefined the instantaneous reactive power so as to make it easier for detecting harmonic current and fundamental reactive current
為此，重新定義了系統瞬時無功功率，使其更易於諧波和無功電流的實時檢測。 -
A closed - loop detecting approach of harmonic and reactive current based on instantaneous reactive power theory is proposed, its base design rules are given
摘要分析了基於瞬時無功功率理論的諧波及無功電流檢測原理，在此基礎上提出一種自適應閉環控制的檢測系統，給出優化設計的基本原則。 -
By realtime detecting harmonics and reactive current in the power line, then generate the compensate current which is equal to the harmful current in amplitude and opposite in direction, realtime compensation is achieved
它通過實時檢測電網諧波和無功電流，然後產生與之大小相等、相位相反的補償電流，進行實時補償。 -
The detecting method of dvr is different from harmonic and reactive current detecting methods. it need detect not only total harmonic distortion but also the difference between fundamental wave component and reference value
Dvr的檢測方法與諧波、無功電流的檢測不同，不但需要檢測出除基波分量之外的總畸變分量，還要檢測出基波分量與基波基準值之差。 -
Three - phase four - wire apf with one - cycle control need not sense the three phase load currents or the three phase voltages, need not calculate the harmonics and reactive current components, as well as the use of any multipliers
單周控制三相四線制有源電力濾波器不需要檢測三相負載電流和三相電源電壓，不需要檢測諧波和無功電流，也不需要使用任何乘法器。 -
The validity and superiority of all these are proved by use the parallel converter of novel upfc to implement reactive current compensation, zero sequence and negative sequence currents compensation, harmonic currents compensation and the mixed compensation of them. this thesis also studies that use novel upfc to implement two phases operating in high - voltage transmission lines by theory analyze and simulation testify
提出了基於多電平變換器的廣義大功率有害電流補償的概念，提出了適合於它的多環定時滯環控制方案，通過用新型upfc的並聯變換器實現無功補償、零序和負序補償、諧波補償及它們的綜合補償來驗證了其有效性和優越性。 -
Apf can achieve dynamic compensation for harmonics and reactive current, and the compensation performance is not affected by the impedance of power grid, it has advantages as follows, fast response, high controllability and adaptability, etc. brief illuminations of advantages and disadvantages are performed to various harmful current detecting methods and control techniques
它可實現對諧波和無功的動態補償，其補償特性不受系統阻抗的影響，具有響應快、可控性高、自適應性強等優點。本文對有源電力濾波器的各種諧波電流檢測法及控制方法進行了簡要的優缺點說明。 -
Apf can achieve dynamic compensation for harmonics and reactive current, and the compensate performance is not affected by the impedance of the electric network, it has advantages as follows, fast response, high controllability and adaptability, etc. analysis is performed to existing main circuit topology, harmful current detecting method and current tracking control of apf in this paper
有源電力濾波器可實現對諧波和無功的動態補償，其補償特性不受系統阻抗的影響，具有響應快、可控性高、自適應性強等優點。本文對現有的有源電力濾波器的各種主電路拓撲、畸變電流檢測和電流跟蹤控制方法進行了分析。 -
In chapter 4, a basic controller of hvdc is designed. for the voltage problem at the inverter, this paper adopts the constant reactive current control at the inverter, which is different from the traditional control method. the constant reactive current control can adjust reactive power consume at the inverter and improve the voltage stability
在第四章hvdc基本控制器的設計中，針對逆變站消耗無功功率與電壓穩定性之間的矛盾，在逆變側採用了有別于傳統方式的定無功電流控制，目的在於調整逆變側吸收的無功功率，從而獲得較好的電壓穩定性。 -
The action of current tracking control circuit is : 1 ) the instantaneous reactive current yield the instruction current of the compensating current according to the reactive current testing circuit got, 2 ) according to the interrelationship of the instruction current and the real compensating current, yields pwm ' s control signal controlling each units of main circuit ducting, the result of controlling pledges the compensation current following the tracks of his instruction current ' s change
電流跟蹤控制電路的作用是： 1 ）根據無功電流檢測電路得到的瞬時無功電流得出補償電流的指令電流， 2 ）根據補償電流的指令電流和實際補償電流之間的相互關系，得出控制主電路各個器件通斷的pwm控制信號，控制的結果保證補償電流跟蹤其指令電流的變化。主電路的作用是根據電流跟蹤控制電路輸出的控制指令，產生實際的補償電流。 -
This paper brings forward that asvg is capable of compensating harmonic, negative sequence and zero sequence currents. so asvg can synchronously compensate the reactive current and harmful currents in three - phase four - wire unbalanced system
本文提出靜止無功發生器還具有抑制諧波和濾除負序、零序電流的能力，從而可以用於對三相四線制不平衡系統同時進行無功補償和有害電流濾除。
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