次同步 的英文怎麼說
中文拼音 [cìtóngbù]
次同步
英文
subsynchronous-
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 blast of sublevel caving together with the blast of undercutting, crater opening and slot cutting are brought about successfully at same time in the practice of sublevel drilling and stope mining with nonelectric blast ignition system, and the productivity of mining is increased
在分段鑿巖階段礦房法回採實踐中，用非電導爆管雷管起爆系統成功地實現了階段落礦爆破與拉底、辟漏、切槽爆破一次同步進行，提高了生產效率。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。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。The paper first studies tratisiiiittcd power versus transmission angle characteristic, capability to exchange active power and immunity to resonance of static synchronous series ( ompensator ( sssc ) bascd on its stcaty model, and discusses tho capability to control activo and reactive power
論文首先基於靜止同步串聯補償器（ sssc ）的穩態數學模型，對sssc的功角特性、交換有功、抑制次同步諧振等方面進行了分析研究，探討了sssc的潮流控制能力。The main works are organized as follows : based on the switching function method and time domain simulations, the small disturbance transfer a characteristic through the converter is analyzed. because of the modulation effect of the converter, the small disturbance in the shaft of turbine generator will induce ac voltage component with the same frequency as the disturbance on the dc side. and the resulted ac current on the dc side will have the similar frequency shift when transfers to the stator of the generator
主要內容包括： （ 1 ）基於開關函數法和模擬分析，研究了機組轉子上次同步頻率的小擾動，在hvdc交直流兩側響應的頻率特性- - - -轉子上的小擾動經直流換流器調制后，將會在系統直流側感應出與擾動同頻率的電壓分量；直流側電流擾動反映到交流定子側，也將發生頻率偏移。分享友人