重燃電壓 的英文怎麼說
中文拼音 [zhòngrándiànyā]
重燃電壓
英文
reignition voltage of arc-
" a conven tional fuel cell is a big stack of graphite plates you squeeze together, and you ' re got all these gaskets and things ", he says
他說: 「傳統的燃料電池是一大堆擠壓在一起的石墨板,而我們又不缺生產墊板這類的材料,所以我們就用像印製電路這樣的方式重造燃料電池。The matrix of time and space for development of hydrogen energy system in china will instruct this work comprehensively, scientifically and objectively ; for beijing case and from all the aspects of energy, environment and economy, the best plan of hydrogen energy system about fuel cell vehicles is : hydrogen is produced by natural gas steam reforming in the central factory, then transported to the refueling stations in the hydrogen tube trailer by the trucks, and filled to the fcb using hydrogen gas
這一工作應在燃料電池汽車氫能系統發展時空矩陣的指導下有計劃、有步驟地完成;燃料電池汽車在我國最早實現商業化的時間是2008年(奧運會) ,地點是北京,車型是燃料電池公共汽車。針對這一案例,綜合考慮燃料電池汽車氫能系統「從井口到車輪」全生命周期的能源利用效率、環境影響和經濟性指標,最佳的方案是:在集中制氫廠採用天然氣蒸汽重整制氫,用汽車將裝有氫氣的高壓氣瓶輸運到氫氣加註站,加註給以氫氣為燃料的燃料電池公共汽車。Facing mounting pressures of escalating fuel and electricity prices, rising costs of living and tariff increases, and unhappiness of the indian community, for the first time, prime minister disclosed that “ the country will hold a general election this year ” without giving details, bloomberg reported january 25
面對多重壓力,包括日益上升的燃油及電供價格,逐日上漲的生活費用及過路稅,加上印裔同胞的普遍不滿, 1月25日,彭博社報道首相阿都拉第一次透露「這個國家今年將舉行大選」 .不過他拒絕交代詳情When vacuum switches switch off shunt capacitors and hv motors, restriking overvoltage and multi - reburning overvoltage may be brought about and threaten insulation of equipments severely
真空開關在開斷並聯電容器組和高壓電動機時可能產生重擊穿過電壓和多次重燃過電壓,對設備絕緣造成嚴重威脅。By improving surface condition of parts and one shot seal - off clean room grade, using ultrasonic vapor phase cleaning process, the inner parts of vacuum interrupter get cleaner. movable particles have been diminished by automatic current ageing, power frequency hi - voltage ageing and dynamic high current ageing. as the dielectric strength of clearance in vacuum interrupter improved, the probability of re - ignition in test drops evidently
通過提高零件表面加工質量,改善一次封排間的真空衛生條件、制定合理的超聲波氣相清洗工藝提高管內潔凈度,採用自動電流老煉、超高壓工頻老煉、大電流動態老煉等工藝進一步消除真空滅弧室內活動性微粒,可提高真空滅弧室真空間隙介質強度,使真空開關投切電容器組的重燃率大大降低,並通過實驗驗證真空開關投切電容器組的重燃率在製造工藝改進後由原來的10 . 7 %降低至1 . 3 % 。Firstly, the contributing factors leading to reignition and over - voltage are briefly discussed. then, with the aid the systematic simplified model and circuit equation, the thesis analyzes in detail the types and range of over - voltage of the capacitor banks under different circuit and switching conditions. the damage and the expected control level are identified
論文首先簡要論述了重燃現象及過電壓的成因;然後藉助系統簡化模型和電路方程,具體分析計算了不同電路和操作條件下投切電容器組過電壓發生的類型和幅值,明確了危害的程度和需要控制的目標水平。Comparing with conventional electromagnetic transformer, piezoelectric transformer has many advantages such as compact volume, high step - up ratio, non - flammability and none - electromagnetic pollution, which is an indispensable part in the electronic information system
壓電變壓器相對于傳統的電磁變壓器具有體積小、重量輕、升壓比高、不易燃、無電磁污染等特點,較好的解決了電磁壓電變壓器體積大、電磁污染嚴重等缺陷,是電子信息系統中不可或缺的重要部件。The aim is to reduce the reignition rate and over - voltage damage from the perspective of the mechanical characteristics of the vacuum breaker switching shunt capacitor banks
最終的目標是從真空斷路器機械特性方面入手,降低操作並聯電容器組時的重燃率、並減小操作過電壓危害。Vacuum breaker is widely applied in the reactive power compensation as the switch of shunt capacitor banks, which will cause reignition and over - voltage after the switching performance gets deteriorated
進行無功補償時廣泛使用真空斷路器作為並聯電容器組的開關控制元件,其操作性能劣化后,突出的表現就是極易發生重燃和操作過電壓危害。But in practical operating, overvoltage caused by reignition of the vacuum switching device frequently appears, and it result in damage of the capacitor bank or the switchgear itself. ensuring the switchgear against reignition and installing a protective device are two main approaches to avoid the phenomenon
但在實際運行中,經常會出現因真空開關重燃而產生過電壓,並導致電容器組或開關設備自身損壞的現象,而保證開關不重燃和安裝保護裝置是避免這類現象的兩條主要途徑。By means of systematic analysis of the mechanism of reignition and over - voltage, the thesis points out that the improper mechanical characteristics of the vacuum breaker is the major factor leading to reignition and over - voltage, and further investigate deeply into the relationship among them ending with a comprehensive conclusion
通過對重燃及過電壓機理的系統分析,指出真空斷路器不良的機械特性是誘發的主要因素,然後就幾方面的關聯問題作出了較為深入和全面地總結。Specially, the rotating ramjet with shaft power output was discussed. result showed that the thermodynamic cycle of the rotating ramjet is a breton cycle including two anti - cycle processes. because the advantage on thermodynamic performances and structure, the rotating ramjet will has wide prospective application in aircraft and powers system in heavy trucks, military facilities, tanks, warship as well as power plant
著重討論了軸功輸出方案的旋轉沖壓發動機,初步分析表明,旋轉沖壓發動機的熱力循環是加進了兩個反循環的布雷頓循環,該發動機在熱力性能和結構方面與燃氣輪機相比有獨特優點,有望在現代和未來各類飛行器及各類重型車輛、戰略設施、坦克、艦船動力、電力等能源動力領域獲得廣泛應用。In this paper, the over voltage induced by re - ignition, rules of breakdown in vacuum contact clearance, factors which influence dielectric strength of clearance and characteristics of re - ignition when vacuum switchgear switch capacitor banks are analyzed. the conclusion is that the breakdown of clearance in vacuum interrupter is the direct cause which inducing re - ignition of vacuum circuit - breaker in capacitor banks ’ switch. particle breakdown is the essential reason to induce breakdown in clearance of vacuum interrupter, although mechanical characteristic of vacuum circuit - breaker is another factor
本文通過對真空開關投切電容器組重燃過電壓、真空觸頭間隙擊穿機理及影響真空間隙介質強度的因素、真空開關投切電容器組重燃現象特點進行分析研究發現,真空滅弧室斷口的真空間隙擊穿是導致真空斷路器投切電容器組重燃的直接原因,其次是真空斷路器機械性能的影響,而微粒擊穿是導致國產真空滅弧室真空間隙擊穿的根本原因。分享友人