次同步的 的英文怎麼說
中文拼音 [cìtóngbùde]
次同步的
英文
hyposynchronous-
This is among them the international factory nature rose the positive push function, especially the some and international factory is high to raise the technique with the big ensign that international synchronous, and let the numerous consumer buy the very much. for example, the most wide lcd of the world that this year june the three stars electronics produce then type dvd l100w a, 40 g the dish s dvd h40c and dvd vcr combination machine dvd v85k at the sale quantity continuously increase of the circumstance, product of recent its grade creep is then type dvd l200w a with combine the machine dvd the v90k again with the strategy s success that the new face walk in to sell a product for, further enunciation three stars is in china and world synchronous ". two year agos, this principle in the three stars electronics the inner part up and down reach consistence. latest product first appears chinas, and this is the three stars electronics in recent years of an important strategy
這其中國際廠商自然起到了積極的推動作用,特別是一些國際廠商高舉技術與國際同步的大旗,讓眾多消費者十分買賬。比如,今年6月三星電子生產的世界最寬的液晶便攜式dvd l100w a 40g硬盤的dvd h40c以及dvd vcr的組合機dvd v85k在中國隆重登場。在銷售量不斷攀升的情況下,最近其升級性產品便攜式dvd l200w a和組合機dvd v90k再次以新面孔走進賣場,進一步表明「三星在中國的產品與世界同步」的策略的成功。This paper studies two tcsc study systems, a tcsc system based on ieee first benchmark model ( ieee fbm ) and a simplified yi - feng 500kv tcsc study system, with ssr eigenvalue analysis in the platform of psaspfmsst. it proves the funtion of tcsc to mitigate subsynchronous resonance ( ssr ). it also analyzes the influence of thyristor triggering algorithm of tcsc on ssr mitigation
本文在psasp小干擾線性化平臺psasp msst上,對基於ieeefirstbenchmarkmodel ( ieeefbm )的tcsc系統及簡化的伊馮500kv可控串補研究系統,進行了ssr小干擾穩定分析,驗證了tcsc對次同步諧振( ssr )的抑制作用,並研究了觸發演算法對tcsc抑制ssr能力的影響。This paper also studies an hvdc system based on leee fbm, a svc system based on ieee fbm and a statcom system based on ieee fbm. it proves the function of supplementare subsynchronous damping controller ( ssdc ) in the above devices to mitigate ssr. it also analyzes the influence of input signal of ssdc on ssr mitigation, tdeng hvdc as an example
在psasp小干擾線性化平臺psaspaisst上,對基於ieeefbm的hvdc系統、基於ieeefbm的svc系統和基於ieeefbm的statcom系統分別進行了ssr小干擾穩定分析,驗證了在這些裝置中安裝次同步振蕩阻尼器( ssdc )對r的抑制作用,並以hvdc為例,研究了ssdc輸入信號對其抑制ssr的影響。Rolling - cutting biscuit shaping machine is new equipment of making soda biscuit, good toughness of thin biscuit and super - thin biscuit. it ' s high production efficiency, low noises, safe operation, convenient, beautiful outer shape. this machine can press and roll rough flour 3 times and equiped with remaining flour recycling machine, also equiped with double - rolling cutting shaped equipement, in the mean time, it can produce two biscuit embryo of differnt shape. 3 times pressing - rolling machine can adjust different thickness and biscuit rough surface. it can roll rough flour and do not stick to rough flour embryo, correctness rate of adopting mould to cut margin of flour embryo reaches 100 percent so that avoid deforming of embryo due to deviation. this machine is one equipment which adopting advanced and won first technical rewarding for its independently control operation, beautiful outer appearance
滾切式餅干成型機是連續製作梳打餅、韌性和薄餅超薄餅的新型設備,具有生產效率高、噪音低,操作安全、方便,外型美觀等優點,本機具有三道軋輥制皮和余料回收機,配備雙滾切成型裝置,同時能生產兩種不同形狀的餅干胚不停機,三道軋輥能同時調節不同厚度和餅皮具有軋輥不粘皮、採用印模切邊一次同步進行準確率100 % ,避免偏差而造成餅胚變形,該機具有獨立控制操作,外形美觀,是目前國內較先進而獲得技術一等獎的設備。Discussion of several analytical approaches and tools about subsynchronous resonance
幾種次同步振蕩分析方法和工具的闡述These models have enough precision in subsynchronous oscillation ( sso ) problem analysis
這種模型對于分析次同步振蕩( sso )問題,具有足夠的精度。Subsynchronous resonance ( ssr ) is a quite hazardous state easily encountered in power systems
次同步振蕩( ssr )是電力系統運行中可能出現的一種相當危險的狀態。The theory of complex - moment - coefficient method is provided due to ssr, and the relationship between complex - moment - coefficient d ( m ) and subsynchronous frequency is also illustrated
在ssr研究中,主要闡釋了復數力矩系數法研究的機理,探討了復力矩系數d ~ ( ( m ) )與次同步頻率的關系。This simplification principle is the foundation of the following analysis. using the test signal method, a detailed analysis of subsynchronous oscillation for a hvdc system is performed
( 3 )對一個僅含有直流輸電線路的系統,採用復轉矩系數- - - -測試信號法,對其次同步振蕩特性進行了分析。Then the different behaviors between fixed series capacitor and tcsc are compared aiming at ssr, when they are individually applied to typical model of ieee second benchmark on subsynchronous resonance
繼而以ieeesecondbenchmarkonsubsynchronousresonance典型模型為例,比較了固定電容串補與可控串聯補償在模型系統中針對同步發電機次同步振蕩這一行為所造成的差異表現。Torsional interaction exists between hvdc converters and turbine - generators, and negative electrical damping provided by hvdc may cause subsynchronous oscillation ( sso ) that can lead to turbine - generator shaft failure and electrical instability at oscillation frequencies lower than the fundamental system frequency
高壓直流輸電( high - voltage - direct - current - - - - hvdc )系統與臨近同步發電機組之間存在著扭振相互作用, hvdc的電氣負阻尼作用有可能引起機組在次同步頻率范圍的扭轉振蕩。The agent of kdc according to the picture and individual character information which users input, the base key of producing automatically, make the conversation every side produce the self - same main key, has solved the problem of key distribute ingeniously. and it utilize irreversible hash function produce session key realize one - time key. the thesis has also analysed the application of different situations that the agent of kdc among the conversation modes in many ways
本文提出的個性化kdc代理根據用戶輸入的圖片和個性信息,自動產生基密鑰,分別運用公開密鑰系統進行交換,使通話各方各自產生完全相同的主密鑰,巧妙地解決了密鑰分配和加密解密同步的問題,並利用單向散列函數的性質,基於相同的演算法產生用於加密解密的一次一密會話密鑰。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。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。Secondly the detection precision is only related to the synchronization phase but not to the amplitude of the mainline voltage because that it uses the optimized pulses synchronous with the mainline voltage as modulation signals. thirdly it decreases the requirement of the input low pass filter and eliminates the error resulting from the direct component and even harmonics of load current. the most significant merit is that it can eliminate the effect of a few low order odd harmonics and the detecting circuit is easy to be implemented
模擬和實驗結果表明該方法的主要優點有:不需使用乘法器進行信號調制,調制信號採用與電網電壓同步的優化特定脈沖,其檢測精度只與同步相位有關,而與電網電壓幅值無關;降低了對輸入低通濾波器的通頻帶要求,直流和偶次諧波分量對檢測精度沒有影響;突出的優點是可以消除有限個低奇次諧波對檢測結果的影響。Design of supplemental sub - synchronous oscillation damping control based on h robust control theory of hvdc system
魯棒控制理論的高壓直流輸電系統附加次同步振蕩阻尼控制設計Some practical method to lifting the rated capacity of vsc - hvdc is discussed. ( 4 ) the subsynchronous oscillation ( sso ) characteristics of a synchronous machine connected to a static var compensator is studied with the complex torque coefficient method realized by time domain simulation, and some important conclusions are obtained which can guide the design and operation of svcs to avoid sso problem
( 4 )基於時域模擬實現的復轉矩系數法,對與靜止無功補償器svc相聯接的同步發電機組的次同步振蕩( sso )特性進行了深入的研究,得出了一些重要結論,可為svc的設計和運行提供避免sso的依據。The electrical damping within the whole subsynchronous frequency range is calculated. the impacts of the unit interaction factor between hvdc and turbine generator, the dc power level, the firing delay angle and the parameter settings of hvdc controller on the have the potential danger of subsynchronous oscillation
在整個次同步頻率范圍內,計算得到了系統電氣阻尼,並詳盡地分析了同步發電機與hvdc的耦合程度、直流輸送功率水平,換流閥觸發角大小以及控制器參數等因素對系統電氣阻尼的影響。All these changes, which are of importance to subsynchronous oscillation analysis, cannot be described with the quasi steady state ( qss ) model any more. therefore, the deficiency of qss - model - based eigenvalue method is pointed out and a novel method named complex torque coefficient - test signal method is adopted to analyze the subsynchronous oscillation caused by hvdc or facts devices
基於此,指出了採用準穩態模型進行hvdc系統次同步振蕩分析的局限性,並引入了分析hvdc或含有facts裝置的系統次同步振蕩問題的方法:復轉矩系數- - - -測試信號法。The report concerned a drill for countermeasures to simultaneous terrorist attacks which was conducted without any sort of prior notification and involved 3, 400 passengers on a subway that was in actual operation
報道的內容是一次同步應對恐怖襲擊的演習。演習是在未發出事先通知的情況下,在一輛搭載著3400名乘客並正在運行中的地鐵里進行的。分享友人