- 復(fù)數(shù)正弦電流
- 矢量電流
- 矢量流
- 向量電流
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vector current中文什么意思
例句與用法
- According to different assessment aim , there were many different index - systems and assessment styles . depending on current newness rate analysis a new idea - general newness rate was set forward . it changed single vector current of newness rate to multi vectors and large its extent of feasibility
最后，依照多指標(biāo)綜合評價(jià)思想，在現(xiàn)有成新率分析基礎(chǔ)上，提出廣義成新率概念，將原有的成新率評價(jià)的一維空間拓展到多維空間，豐富了評價(jià)內(nèi)容，拓寬了適用范圍，不僅可以用在設(shè)備系統(tǒng)估價(jià)，同時(shí)也可以用在設(shè)備系統(tǒng)決策的很多領(lǐng)域。 - 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 ,
基于基爾霍夫定律的電流差動保護(hù)無論對于何種形式的輸電線路都是一種簡單、可靠、選擇性強(qiáng)的保護(hù)形式，電力系統(tǒng)的發(fā)展使得電流差動保護(hù)應(yīng)用于線路保護(hù)成為需要，而電子、通信技術(shù)的發(fā)展使得電流差動保護(hù)應(yīng)用于輸電線路成為可能。首先，本文對目前線路保護(hù)的研究和實(shí)際應(yīng)用情況進(jìn)行了討論和分析，比較了常用線路縱聯(lián)保護(hù)的實(shí)現(xiàn)原理和實(shí)現(xiàn)條件及優(yōu)缺點(diǎn)。其次，針對常規(guī)相量電流差動保護(hù)易受正常負(fù)荷電流和故障過渡電阻影響的缺點(diǎn)，同時(shí)為加快差動保護(hù)的動作速度，對基于故障分量瞬時(shí)采樣值電流差動保護(hù)的原理、判據(jù)、動作特性等作了討論和分析，結(jié)果表明基于故障分量瞬時(shí)采樣值電流差動保護(hù)在可靠性、靈敏度、抗電流互感器飽和方面明顯優(yōu)于常規(guī)相量電流差動保護(hù)，對電流差動保護(hù)各端的同步采樣方法和數(shù)據(jù)通信也進(jìn)行了分析和評價(jià)。