電壓沖擊 的英文怎麼說
中文拼音 [diànyāchōngjī]
電壓沖擊
英文
voltage surge-
Two - dimensional precise actuator driven by piezoelectric bimorph impact
壓電雙晶片型二維慣性沖擊式精密驅動器Electric cables and wires - method for impulse ovtage test
電線電纜沖擊電壓試驗方法The voltage ir on core adopts semienclosed insert model. the current element adopts two - stage compensation to have wide load property. the whole plasticenclosed voltage coil. can withstand instantaneous large voltage impulse. the double jewels bearing or the magnetic - propelled bearing can ensure long lifetime. the bipolar aluminium nickel cobalt damping magnet steels have high coercivity, stable magmetic property. the electric function is in accordance with iec521 international standard
：電壓鐵芯採用半封閉插入式，電流元件採用二級補償使表計具有寬的負載特性。全塑封的電壓線圈能稱說瞬時大電壓沖擊。雙寶石軸承或磁推動軸承確保表計長壽命。Characteristics study of short - pulsed dielectric breakdown in liquids
液體介質快脈沖電壓下擊穿特性研究Electrical equipment for aircraft. voltage surge protection for one power source
飛機電氣設備.單電源沖擊性過壓保護裝置Electrical equipment for aircraft. voltage surge protection for several power sources
飛機電氣設備.多路電源沖擊性過壓保護裝置The shorter the interval between the two pulses of the current wave, the fewer strikes the varistors can endure. at the same time, the dc ljima changes fast - slowly - fast alone with the experiment continuing. microstructual disorder, such as variations in the height of the electrostatic potential at grain boundaries and electrode protrusions into the zinc oxide varistors, causes substantial temperature rise in a microscopic region around the defect and is the source for failure
雷電的多重閃擊對雷電過電壓保護器件的影響更加嚴重，本文首次採用不同間歇時間雙脈沖電流沖擊對氧化鋅電阻進行了多次試驗，試驗表明：氧化鋅電阻在雙脈沖電流沖擊下更容易出現老化破壞現象，間歇時間越短，電阻能耐受的沖擊次數越少；此外，直流u _ （ 1ma ）值隨沖擊次數的增加具有快一慢一快的下降過程。Simulation study of switching overvoltage strike of power stations
廠站操作過電壓沖擊模擬研究In the way based the scientific and tecdrical talks on i presided at and panicipated in, the graduation theis included a p1entful thets in recent years wtll be divided into three parts for depiction conxteniently and clearly, according to the content as fo1lowsf ( l ) the study of shock compression properties with the drixtiir - liquid co and n, experimentally ( 2 ) the study of the phenomenon of excess heat produced by deuteriurn atoms entering into the lattice of titaluxn experimentally ( 3 ) the calcujation for the electronic structure and energy of hydrogen atoms cluster ffi. the mainstream in the first part of the paper is to exposure some experimental tecndques in high pressure and high temperatur shock compression physics, including by using a cryo - target cooled down circulating steaxned n, to condense the well - proportioned mixed liquid sample from pure gas co and n = with equal molar voiurne
根據近幾年所承擔和參加的科研任務，將研究成果總結寫成的論文按以下三個部分敘述： （ 1 ）液體co和n _ 2混合物沖擊壓縮特性的實驗研究（由國防科技重點實驗室基金項目96js75 . 2 . 1 . jw1902資助） （ 2 ）重氫原子進入鈦晶格中引起過熱現象的實驗研究（由國家自然科學基金10145002資助） （ 3 ）氫原子團簇h _ 9的電子結構與能量計算第一部分以高溫高壓沖擊波物理實驗為主，採用自行研製的低溫循環汽冷靶冷凝制樣技術由高純co和n _ 2氣體獲取等摩爾體積均勻混合的液體沖擊初態樣品。The tap - changer is made with solid state relay as its working mechanism and controlled by microprocessor. this switch has totally cancelled the mechanical drive organization, by the microprocessor according to the voltage of second side microprocessor decide the working condition of solid state rely, high regulation speed, need not transition resistor, rush current is low. operating frequently ; there is no electric arc to produce, can put in the fuel tank of the voltage transformer directly ; the structure is simple, the fabrication cost is low, benefit and use widely among the voltages transformer of distribution
其中的有載調壓分接開關，它是一種完全由固態繼電器作為分接開關執行機構，由單片機控制的有載自動調壓的變壓器分接開關。該開關完全取消了機械傳動機構，由單片機根據變壓器二次側電壓的高低，決定與變壓器各分接頭聯接的固態繼電器的工作狀態。調節速度快，改變分接頭時不需過渡電阻，沖擊電流小，可頻繁操作；無電弧產生，可以直接放在變壓器油箱中；結構簡單，造價低，便於在配電變壓器中推廣使用。Based on the investigation of analysis methods for the overvoltage striking on rotating electric machines and its research status at home and abroad, the safety forecast theory and the analysis method for the switching overvoltage of large power stations are firstly presented based on the field - circuit analysis, and the transient field distribution and the insulation condition in the stator winding insulator stricken by the switching overvoltage in large power stations are studied and analyzed on line
本文在分析和總結國內外關于旋轉電機過電壓分析方法及其研究現狀的基礎上，首次提出了基於場路結合的廠站操作過電壓安全預測理論和分析方法。本文研究了大型電站中的操作過電壓沖擊波在發電機定子繞組絕緣介質中暫態電場的實時分佈狀態，在線分析發電機的絕緣工作狀況，搜索發電機內部可能突發絕緣事故的區域，預測發電機內部可能發生絕緣事故的故障點，並重點研究了大型發電機絕緣安全在線預測分析方法和建立了大型發電機絕緣安全評估模型。In order to decreasing hydraulic impact, the principle is analyzed to eliminate or increase hydraulic impact by means of changing eccentric lump structure to cut down the inertia force of starting, changing the pressure of pilot electromagnetic relief valve and changing the parameters of accumulator
為了減小液壓沖擊，本文分析了用改變偏心塊結構減小起振慣性力的方式、用改變先導式電磁溢流閥溢流壓力方式和改變蓄能器參數方式消除或減小液壓沖擊的原理。Reactive power are calculated using the new algorithm. on the basis of analyzing different kinds of control strategies of var compensation, the paper applies the criterion of voltage and var to control switching and illustrates a improved mode of switching capacitor which can prevent the switched - capacitor from the impacting of instantaneous rush currents by means of zero - crossing triggering of scr components, and can realize auto - tracking var and auto - switching shunt capacitor bank. initial operating parameters are stored in information flash memory of the mcu using flash self - programming technique in order to decrease complexity of the circuit and improve stability
高壓智能無功補償控制器以flash型16位單片機msp430f149為控制核心，採用了一種相角實時測量的新演算法，並在此基礎上計算出了功率因數、有功和無功，減少了運算量提高了精度；在分析了各種無功補償控制策略的基礎上，以母線電壓和無功功率復合判據控制投切，並提出一種改進的電容器投切方式? ?暫態投切控制晶閘管過零觸發，避免了電容器投切時的電流沖擊；穩態運行時接觸器替代晶閘管，實現無功補償的自動跟蹤和電容器的自動投切，解決了投切時的暫態電流沖擊和穩態時可靠運行的難題；控制器的原始運行參數採用flash自編程技術，將其保存在msp430f149片內的信息flash中，簡化了硬體電路，大大提高了系統的可靠性。On the basis of the test about air conditioner, its load characteristics are analyzed, including the static characteristics, drop out characteristics, starting characteristics and its responses to voltage dips. it shows that the current impact can reach five to eight multiples when the air conditioner started and come back within 0. 3 to 0. 5 second. 0. 6 pu voltage is the critical voltage whether the air conditioner will stall
分析發現，空調啟動時電流沖擊倍數可達5 8倍，在0 . 3 0 . 5秒之內平息； 0 . 6u _ n為空調停機的臨界電壓，因此空調的電壓擾動特性可以分為兩種情況：一為較小擾動情況下空調尚未停機時的動態；另一為大擾動導致空調停機時的動態。The shell made of fiberous glass, reinforced unsaturated polyster resin has elegant outline, possessing the excellent properties of static electricity resistance, impact resistance, corrosion - proof and thermal reliability, etc
外殼採用高強度難燃工程塑料壓制而成，外型美觀且具有抗靜電耐沖擊及熱穩定性好又耐腐蝕等優良性能。First, because pipelines are so complex that controlled object is high order, delay, coupling, nolinear and time - varing, it is difficult to realize closed loop control for it using valid mathematic model. to resolve this problem, the paper presents a fuzzy - pid control algorithm with self - adjusting regulation factor. second, if a moving motor supplied by inverter power is switched to be supplied by power supply, the impact of overload - voltage and overload - current appears
主要針對中、大容量供水系統中，由於供水管網鋪設復雜、彎管多、控制對象具有高階、滯后、耦合、非線性及參數時變的特點，難以利用有效的解析式數學模型進行閉環控制，以及多臺水泵並聯運行時，水泵電機由變頻電源供電向工頻電源供電切換過程中產生的過電壓過電流沖擊這兩個難題，提出了可調整因子fuzzy - pid控制演算法及利用鎖相環控制實現水泵電機由變頻電源向工頻電源的同頻同相平滑切換。Methods for the determination of the lightning impulse breakdown voltage of insulating liquids
絕緣液體的閃電脈沖擊穿電壓測定方法Transient voltage surge suppressors
暫態電壓沖擊抑制器Instruments and software used for measurements in high - voltage impulse tests part 1 : requirements for instruments
高電壓沖擊測量儀器和軟體第一部分：對儀器的要求Moreover, in order that large generators are protected to work safely, the useful technique of safety forecast and real - time monitoring for the switching overvolatge is also approached and studied so that the preventive protection and maintenance can be supplied to the large generators
本文還研究了大型電站中操作過電壓沖擊下的發電機安全預測與實時監測技術，預測發電機定子絕緣安全狀態，以便對大型發電機進行預防性保護與預知性維護。分享友人