hvdc transmission 中文意思是什麼

hvdc transmission 解釋
高壓直流輸電
  • hvdc : 高壓直流輸電子工業
  • transmission : n 遞送；傳遞；傳達；傳染；移轉；【機械工程】傳動；傳遞；變速器；聯動機件；【無線電】傳送；發射；...
  1. Commutation failure factors analysis in hvdc transmission system

    直流輸電系統中逆變器換相失敗的因素分析
  2. Transmission losses will be less than 7 percent, significantly less than the losses from conventional 500 - kilovolt ( kv ) high - voltage direct current ( hvdc ) transmission schemes

    電力的傳輸損失將少於7 % ，遠遠低於傳統500千伏高壓直流（ hvdc ）傳輸計劃的損失量。
  3. With the increased use of hvdc transmission systems in power systems, situations have arisen and will be even more frequent in the future, where sigle - infeed hvdc system with a parallel ac line and several hvdc systems are located in close of each other

    隨著hvdc輸電系統在電力系統中投入越來越多，交直流並聯系統和多饋入hvdc系統正在逐漸增多。在這種情況下，交流系統和直流系統，不同的hvdc系統間都將存在相互作用。
  4. The correlative items of dc filters are researched on the basis of gezhouba - shanghai hvdc transmission project. in the analysis the three - pulse model is used to simulate converter, which takes into account the impact of the stray capacitance. the harmonics distribution on dc lines is simulated accurately, especially the harmonic ignored in old models

    本文以葛上直流輸電工程為基礎，研究直流濾波器設計中的相關問題，採用考慮了雜散電容的三脈動模型來建立換流站模型，更為準確地模擬出直流輸電線路上的諧波分佈情況，尤其是模擬出舊模型中忽略的次（為自然數）諧波，為直流濾波器的設計提供了更精確的數據和判斷依據。
  5. On the contrary, because of the effect of positive damping provided by the inverter, the unit near a inveter will have no subsynchronous oscillation risk. based on the same method described above, a damping study is carried out for a hybrid ac / dc system, which include a hvdc link and an ac transmission line in parallel

    研究表明，系統整流站附近的同步發電機組要承受電氣負阻尼作用，因此有可能引起機組低頻扭轉振蕩模式失穩；而hvdc的逆變站向其臨近同步發電機組提供正阻尼，因而機組不存在次同步振蕩危險。
  6. The characteristics of damping shows that the uncompensated parallel ac transmission line can release the coupling between the hvdc and generator and improve the damping of the system, hence the possibility of subsynchronous oscillation decrease. in such a system scheme, the hvdc system dominates the changes of damping due to the small magnitude of the damping provided by ac line. when the ac transmission line is compensated with a fixed series capacitor, the situation will be totally different

    其中，並列運行的無串補交流輸電線路可以緩解hvdc與其臨近機組之間的機電耦合程度，改善hvdc的電氣負阻尼特性，從浙江大學博士學位論文摘要而減輕機組發生次同步振蕩的危險性，此時系統的整體電氣阻尼特性由hvdc的性質決定;但若交流線路中存在串聯補償電容，則系統幅值較大的電氣負阻尼不僅可能使整流站機組發生次同步振蕩，逆變站附近機組同樣存在發生次同步振蕩的可能性，此時系統的整體阻尼特性由串聯補償電容的性質決定。
  7. This paper discusses the research of ultra hvdc transmission ' s reliability from the system design principle, control levels arrangement and protection areas

    為提高特高壓直流輸電控制保護系統的可靠性，從系統整體設計原則、直流控制分層、直流保護分區等方面提出了具體方案。
  8. Hvdc high - voltage direct current transmission

    高壓直流輸電
  9. Hvdc high - voltage d. c. transmission

    高壓直流輸電子工業
  10. High voltage direct current ( hvdc ) transmission systems, which are fit for transmission electric power in long distance and large capability, can be widely applied in our country

    適合於遠距離、大容量輸送電力的高壓直流輸電技術（ hvdc ）在我國大有用武之地。
  11. Uhvdc transmission is a further development of hvdc, a technology pioneered by abb more than 50 years ago

    超高壓直流傳輸技術是對abb在50多年前首先開創的高壓直流傳輸技術的一個繼承發展。
  12. Analysis of ground surface potential distribution under single - pole operation mode of hvdc transmission lines on special soils

    輸電線路單極模式運行時的地表電位計算
  13. Hvdc light is a kind of new dc transmission technology developed from the traditional hvdc, with voltage source converter ( vsc ) and igbt as main components. the basic principles of vsvpwm are studied, and an approach to simulate vsvpwm based on pscad / emtdc is put forward in this thesis

    輕型高壓直流輸電（ hvdclight ）技術是在傳統直流輸電基礎上發展起來的一種新型輸電技術，其主要部件是以絕緣柵雙極晶體管構成的電壓源換流器（ vsc ） 。
  14. Analysis and definition of dc side harmonic performance of hvdc transmission systems

    Hvdc傳輸系統的直流側諧波性能的分析和定義
  15. Guide for analysis and definition of dc side harmonic performance of hvdc transmission systems

    Hvdc傳輸系統的直流側諧波性能的分析和定義指南
  16. Built at a cost of $ 900 million on behalf of state grid corporation, china ' s longest hvdc transmission link delivers much - needed power from the three gorges hydropower plant in central china to the coastal megacity of shanghai

    由中國國家電網公司投資9億美元建造的這條中國最長的hvdc傳輸線，從三峽水電站向中國的沿海城市上海輸送著大量需要的電力。
  17. Hvdc transmission systems are a typical nonlinear and time - varying control systems, which poses difficult control problems and complicated control strategies. pi controllers are traditionally used in hvdc system. although these controllers have been operating satisfactorily for many years, the results are not perfect

    雖然它們具有一定的適應性，但對于高壓交、直流輸電系統這樣一個典型的強非線性、時變系統來說，其控制效果並不是很理想，往往不能滿足性能要求。
  18. According to the practice on gezhouba to shanghai hvdc transmission project and in consideration of condition on three gorges hvdc project, some suggestions on protection of overvoltage and insulation coordination for outer insulation, against pollution - wet, dc neutral bus over - voltage and dc & ac filter are technically presented. it may be a reference in design of three gorges converter station

    根據葛南直流工程的經驗並結合三峽工程的情況，在換流站的外絕緣、直流耐污濕技術、直流中性母線過電壓防護、交直流濾波器的過電壓防護等方面提出了過電壓和絕緣配合的技術要求，供設計參考。
  19. A six - order dynamic model is established for a single - machine infinite bus system with parallel ac / dc transmission lines, in which the dynamic regulating process of the generator and hvdc are considered comprehensively, and the excitation controller is neglected

    基於單機無窮大交直流並聯系統，忽略勵磁控制器，綜合考慮發電機和直流輸電系統的動態調節過程，建立六階動態模型。
  20. The control system is the core of high voltage direct current ( hvdc ) transmission system

    控制系統是高壓直流輸電系統的核心。
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