結點電容 的英文怎麼說
中文拼音 [jiēdiǎndiànróng]
結點電容
英文
node capacitance-
The characteristics : the product is of structure of combined single leg, consisting of capacitance bleeder and electromagnetic unit
產品特點:產品為組合式單柱結構,由電容分壓器和電磁單元兩部分構成。Electrical capacitance tomography ( ect ) is one of process tomography ( pt ) technique which is based on capacitance sensor, it can provide interior behavior 2 / 3 dimension visualizing information in process equipment such as closed pipe, vessels and so on in real time. ect has the advantage of being non - intrusive, fast in response, simple in structure, high safety and low in cost, so it is one technique which has great developing potential in field of petroleum, chemical engineering and so on
電容層析成像( ect )技術是近年來發展起來的一種基於電容敏感機理的過程層析成像( pt )技術,可實時提供封閉管道、容器等過程設備內物場運動狀態的二三維可視化信息,具有非侵入、響應速度快、結構簡單、安全性能好、成本低等優點,是一種在石油、化工等領域很有發展前景的pt技術。In oilfield, feeder line of 6kv often has many branches. the pole high voltage automotive capacitor compensation system controlled by single chip computer is designed for this situation. in the system, we separate the measure position and compensation position and realize the supervision of reactive load in local area
文章以油田6kv輸配電線路為例,針對多分支樹狀結構線路的特點,研製出由單片機系統控制的戶外術上型高壓電容器自動補償系統。This article introduces briefly the process of design and characteristic of structure of db930 tube and discusses the main problems of technology and technique which was met during the manufacture and the measures having been adopted are emphatically. it discusses the solve measures in following six aspects : the filament current is too large, carbon deposits during the carbonizing of cathode, the capacitance between the first grid and the second grid is too large, transpiring happens inside the tube, the insulation resistance between the electrodes is too lower when the filament is on and the ability of bearing high voltage is too lower
本文簡略地介紹了db930的設計過程及其結構特點,重點論述了在試制過程中遇到的主要工藝技術問題及解決問題的措施,圍繞解決燈絲電流大、陰極碳化時積碳、一柵和二柵之間的電容大、管內蒸散、熱態時極間絕緣低、耐高壓的能力差等六個方面的問題進行了論述。The switched capaci tor filter is the counterpart of the continue time analog filter " s sampling, it is more adapted to the miniaturization of the circuit and can realize the higher accuracy transfer function, especially the design of the cmos integrated sc filter based on the biquad have advantage of high accuracy, small area, low power consumption, simple architecture and easy to debug. it has important academic and practical means of the sc filter " s research and design
開關電容濾波器是連續時間模擬濾波器的采樣時間等效電路,更適合電路的小型化,同時也實現高精度的傳輸函數,尤其是基於雙二階的cmos開關電容濾波器設計具有高精度、面積小、低功耗和電路結構簡單,易於調試等優點,所以研究和設計開關電容濾波器有著重要的理論和實際意義。The problem about neutral - point - grounding mode is an all - around technical problem which associated with not only power system reliability , insulation coordination , electromagnetic interference , but assault safety 。 in china , the neutral grounding modes of the 10kv net involved of none grounding, grounding by arc suppressing coils, resistance grounding or reactance grounding in the past 。 with the development of civic power network , low resistance grounding mode was used to restrain the over voltage, particularly in guangzhou, shanghai , beijing , and zhuhai etc. it was reported that the over - voltage level of low resistance grounding mode is lower than that of arc suppressing coil mode, but the operation carried out the other way 。 at substations in guangzhou and shanghai it was found that the low resistance grounding mode is successful 。 but in some areas , such as zhuhai , substations grounding with low resistance revealed some problems , including power supply reliability rapidly dropping , transmitting line often tripping ; and person safety being threatened 。 so interiorly the grounding mode selection of the 10kv network was disputed, which mainly focused on the fault form of 10kv net grounding, the apply area of suppressing arcing coil grounding mode, power supply reliability level of the two modes, person safety, communication interfere and the workload of maintenance
爭議點主要是在10kv電網接地故障的形式、消弧線圈接地的應用范圍、兩種運行方式供電可靠性的高低、人身安全、通訊干擾和運行維護工作量等諸多方面。 11 17本論文就是針對以電纜為主的城區10kv電網中性點接地方式的選擇問題進行研究。論文首先對10kv電網的中性點運行各種方式進行分析,比較各方式的特點,然後以重慶儲奇門變電站10kv電網的實際參數來建立數值計算模型,在考慮了電網接地電容電流變化、中性點電阻取值大小、接地點接地電阻值變化等多種影響因素的情況下,對中性點經消弧線圈接地和經小電阻接地方式下電網的過電壓水平和接地點短路電流大小進行了數值計算,其計算結果與電科院所作現場試驗進行了比較。In order to make the sensitivity of 2 - demension accelerometer along the two main arbors almost identical, symmetric four - beam structure that embeds a double - sides interdigitated differential capacitive with puckered beam in two directions was used as sensitive component. in addition, the differential capacitive accelerometer fabricated by bulky silicon micromechanical technique has high sensitivity, wide measurement scope, less nonlinear error, and simple converting circuit. then, the structure parameters of the sensitive component were calculated and stimulated, which results in a set of the optimized structure design parameters, main fabrication procedure and several key fabrication technology
為使二維振動傳感器在兩主軸方向的靈敏度大致相同,敏感元件採用高度對稱的四梁結構,其中每個軸向上均採用帶折疊梁的雙側叉指電容結構,採用體硅微機械工藝製作的高深寬比叉指電容式敏感元件,具有高靈敏度、寬量程、非線性誤差小、外圍電路簡單等優點;對設計的敏感元件結構參數進行了計算,並利用有限元法進行了模擬分析,根據模擬結果得出了優化參數;在確定敏感結構的基礎上,研究了敏感元件採用體硅微機械加工工藝製作的工藝流程和關鍵工藝技術;對敏感晶元內部的c - v介面電路進行了原理設計與分析,利用差動測量技術得到由振動引起的微小電容變化量,經c - v介面電路進行相位調制處理,然後通過解調輸出與加速度成正比的電壓信號。The characteristics : the unit is composed of high voltage parallel capacitor, serial reactor, switch ( disconnector, grounding switch, breaker etc. ), lightning arrestor, fuse, discharging coil, current transformer, insulator, busbar and steel bracket, includes two kinds of structure : frame type and cabinet type
產品特點:裝置由高壓並聯電容器、串聯電抗器、開關(隔離開關、接地開關、斷路器等) 、避雷器、熔斷器、放電線圈、電流互感器、絕緣子、母排和鋼架組成,裝置有框架和櫃式兩種結構。The main works are listed as follows : ( 1 ) the small capacitance measuring circuit for ect based on the charge amplification principle was deeply analyzed and improved. the stray - immunity and the charge injection effect of this circuit were deeply analyzed. the influence of the charge injection effect was eliminated by practical time sequences and circuit structure differential
本文的主要工作和創新點如下: ( 1 )對基於電荷放大原理的微弱電容測量電路進行了深入的分析和改進,深入分析了該電路的抗雜散電容性能及電荷注入效應問題,通過時序的合理設計消除了電荷注入效應等因素對測量結果的影響,改進了該電路的數學模型。Abstract : it is shown in this paper that distributions of electric fields in five measuring slots of uster evenness tester, and the errors caused by uneven electric fields were analysed. according to the results of measuring and analysing electric fields, a set of tests were made, and several estimation to the errors were given. at last, notices of operation were given
文摘:實測了烏斯特紗線均勻度試驗儀上5個電容測量槽的電場強度分佈,分析了由測量槽不均勻電場所引入的誤差.系統地測試分析了第5號槽誤差,獲得了幾種誤差的定量估計.最後給出了正確使用儀器,避免測量誤差所應注意的幾點結論For many applications thin - film resistors and capacitors offer certain distinct advantages over their junction counterparts
在許多場合,薄膜電阻、薄膜電容與結電阻、結電容相比有一些明顯的優點。A lcc multi - resonant ( mr ) network is added to the traditional three - level converters to realize zvs. the unique arrangement of a multi - resonant network results in absorption of all major parasitic components hi the resonant circuit, such as transistor output capacitance, diode junction capacitance and transformer leakage inductance, which can eliminate parasitic oscillation in the converter
它的優點在於諧振電容吸收了開關管和續流二極體的結電容,諧振電感吸收了變壓器的漏感,使得開關管和續流二極體都能在軟開關的條件下完成導通和關斷過程,消除了電路中的寄生振蕩。The processes and characters of synthesis reaction for ni / al and ti / al under the influence of high intensity of pulsating electric current are researched. the characters of organization and structure of products under different parameters such as charge voltage, charge capacitance, pulsating electric current, pulsating amounts and pulsating duration are summarized
對高密度脈沖電流下ni al 、 ti al的反應特點進行了分析,總結了在不同的充電電壓、充電電容、脈沖電流、脈沖數量、脈沖持續時間等參數下,反應產物的組織與結構特點。Communication networks and systems in substations - part 7 - 4 : basic communication structure for substation and feeder equipment ; compatible logical node classes and data classes
變電所的通信網路和系統.第7 - 4部分:變電所和饋電設備用基本通信結構.兼容邏輯節點種類和數據種類Communication networks and systems in substations - part 7 - 4 : basic communication structure for substation and feeder equipment - compatible logical node classes and data classes
變電站的通信網路和系統.第7 - 4部分:變電站和饋電設備用基本通信結構.兼容邏輯節點分級和數據分級With the consideration of most of our transformers " taps are changed manually and some fluctuate unnecessarily, this paper presents a supervision system of oltc based on plc control technique. then we combine this system with reactive power compensate device such as shunt capacitor to design a new supervision system of substation voltage and reactive power synthetic control based on plc fieldbus
針對國內變電站電壓調整大多依靠人工調節,且有載調壓變壓器( oltc )分接頭動作頻繁的特點,本文提出了基於plc控制技術的有載調壓監控系統的研製方法,並以此監控系統為基礎,結合併聯補償電容器組等無功補償設備,設計了一種基於plc現場總線的變電站電壓無功監控系統。By compared with the simulation results and the experiment results, we come to the conclusions that : ( 1 ) circuit with assistant network can widen soft - switching extent in lagging arm, reduces duty - cycle loss on the secondary, diminishes switching dissipation of inverter spot - welding power source. ( 2 ) the range of resonant capacitor, the important factor to soft - switching process, not only affects zero - voltage turn - off of power switches, but also affects the range of zero - voltage turn - on of power switches. so resonant capacitors must be considered according to many aspects ; ( 3 ) it easily fulfils soft - switching condition in lagging arm as leakage inductance of power transformer increases, but bigger leakage inductance of power transformer increases opening dissipation of transformer and decreases efficiency of soft - switching inverter power source
通過模擬結果與軟開關點焊逆變器試驗結果的對比分析,得到了如下主要結論:採用輔助網路可以完全拓寬全橋軟開關逆變器的滯后橋臂軟開關范圍,減小了次級占空比丟失,降低了逆變電阻點焊電源的開關損耗;諧振電容是影響軟開關工作狀態的重要因素,其大小不僅影響開關管的零電壓關斷,同時也影響開關管的零電壓開通范圍,因此,諧振電容應該綜合考慮;功率變壓器漏感越大,越容易滿足滯后橋臂的軟開關條件,但是大的漏感也使變壓器的通態損耗增加,降低了軟開關逆變器的效率。Because of the clamping capacitor and the interleaved structure, it has some good features compared with other flyback converters, such as : the topology is simple and can be realized easily ; the voltage spike of the power switch is availably restrained and without leakage - inductance energy loss ; the ripple of the input and output current is reduced, correspondingly, the volume and weight of the output and input filter is also significantly reduced
由於箝位電容的加入,相對于其他類型的反激式變換器電路,該拓撲具有一些獨特的優點:電路結構簡單且易於實現;無需另加輔助開關管,實現了開關管的有源箝位,抑制了開關管的電壓尖峰;提高了輸入、輸出電流的脈動頻率,減小了輸入及輸出濾波器體積。Abstract : this paper discusses the principles for selecting the breakdown decision current value in electrolyte strength test based on the structure features of electrolyte, causes and processes of electric breakdown, and human body reaction when suffering from macro electric shock risk by different electric currents, and makes supplementary analysis and explanation on the conditions of micro electric shock risk and the larger distributing capacitance in test circuits
摘要:從電介質的結構特點和產生電擊穿的原因、過程以及人體遭受不同電流宏電擊危險時的反應兩個方面,論述了電介質強度試驗中擊穿判定電流值的選取原則,並對微電擊危險和試驗迴路中存在較大分佈電容的情況,作了補充分析、說明。The paper adopts provision function competition model to study two - knots power transmission system and four - knots power transmission system and obtains several different research results from traditional economics theory. for the two - knots power transmission system with power transmission capacity restriction, incomplete competition between producers really increase profits of power plants, but it does not change apparently electricity price and power consumption of consumers. the reason is that profit increment of power merchants comes from fees of power transmission right owner
本論文採用供應函數競爭模型,研究了兩節點和四節點的輸電系統,得到了幾項與傳統的經濟學理論不同的研究結果:對於一個帶有輸電容量約束的兩節點輸電系統,生產者(發電商)之間的不完全競爭確實增加了發電商的利潤,但是並沒有明顯改變消費者(用電)的價格和電力消費(生產)量。分享友人