differential current transformer 中文意思是什麼

differential current transformer 解釋
差動電流互感器
  • differential : adj 1 差別的，區別的；特定的。2 【數學】微分的。3 【物、機】差動的，差速的，差示的。n 1 （鐵路不...
  • current : adj. 1. 通用的，流行的。2. 現在的，現時的，當時的。3. 流暢的；草寫的。n. 1. 水流；氣流；電流。2. 思潮，潮流；趨勢，傾向。3. 進行，過程。
  • transformer : n. 使變化的人[東西]；【電學】變壓器；變換器；互感器。 polarity of transformer 變壓器繞線方向。
  1. Thus, to open or block it in current transformer linear or saturation sections, the bus differential protection can be realized

    實現了母差保護在ta飽和區內閉鎖，線性區內開放，從而避免了區外故障ta飽和時保護的誤動作。
  2. The bus differential protection based on instantaneous values of currents is the most useful scheme nowadays. but it is easy to be influenced by current transformer saturation and to make misoperation

    目前微機保護最常用的方法是電流瞬時值差動保護，這種方法受電流互感器（ ta ）飽和的影響而容易誤動。
  3. Unbalanced current generated in differential protection of main transformer and its countermeasure

    主變差動保護不平衡電流產生及應對措施
  4. 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。
  5. How to discriminate between internal fault and magnetizing inrush current is the difficulty of transformer protection when apply differential relay

    變壓器主保護選擇差動在原理上存在不足，帶來的問題就是如何準確鑒別勵磁涌流與內部故障，這也是目前變壓器保護的難點。
  6. Alternating - current linear variable differential transformer ac - aclvdt

    交流極譜儀
  7. In order to improve the behavior of transformer protection that is incomplete at present in distinguishing magnetizing inrush current from fault current, the paper puts forward a kind of new principle of transformer differential protection after analyzing the characteristic of magnetizing inrush and active power consume of transformers. this protection uses differential protection based on positive sequence active power as a criterion to discriminate internal faults from magnetizing inrush, and ratio restraint differential current protection as a signal to touch off the protection

    針對當前電力系統中變壓器保護由於勵磁涌流鑒別理論不完善而導致的誤動率相對較高的問題，論文在分析了變壓器勵磁涌流特性和有功損耗的基礎上，提出了用變壓器正序有功功率差動作為區別勵磁涌流和故障電流的判據，並以成熟的比率制動差流保護作為內外部故障判據的變壓器主保護。
  8. Direct - current linear variable differential transformer dc - dc lvdt displacement transducers

    直流差動變壓器式位移傳感器
  9. Alternating - current linear variable differential transformer ac - ac lvdt displacement transducers

    交流差動變壓器式位移傳感器
  10. The extending techniques such as vector transform ， excitation inrush current, ta saturation and so on are analyzed, which resolves the question that the traditional optical differential protection can not satisfy the request of line - transformer unit

    同時對光纖差動保護運用於線路變壓器組時涉及的矢量變換、勵磁涌流、 ta飽和等延伸技術進行了分析，解決了傳統的線路光纖差動保護不能滿足線路變壓器組保護的要求。
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