電容不平衡 的英文怎麼說
中文拼音 [diànróngbùpínghéng]
電容不平衡
英文
capacitive unbalance- 電 : Ⅰ名詞1 (有電荷存在和電荷變化的現象) electricity 2 (電報) telegram; cable Ⅱ動詞1 (觸電) give...
- 不 : 名詞[書面語] (剁物所用的木墩) a block of wood
- 平 : Ⅰ形容詞1 (沒有高低凹凸 不頃斜) flat; level; even; smooth 2 (高度相同; 不相上下) on the same l...
- 衡 : Ⅰ名詞1 (秤桿) the graduated arm of a steelyard2 (稱重量的器具) weighing apparatus3 (姓氏) a...
- 電容 : electric capacity; capacitance; capacity
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The voltage of bridge capacitor will become unbalanced, when inverter ' s input side is a single source. this phenomenon is inherent with the control of voltage feedback. a balance winding can overcome this shortcoming and widen the application of this circuit
採用單電源供電的半橋電路,如僅採用電壓反饋控制方案無法克服橋臂電容電壓的不平衡,通過加入平衡繞組可以克服這一缺陷,擴大電路的應用場合。After the energization of station system commissioning, the unbalance current of all hv capacitor banks is within permitted
在實際調試送電后電容器組的不平衡電流均在允許范圍內。Note that filter capacitor group of the wiring methods used to protect and uneven manner, using two characters express
章節附註號表示濾波電容器組採用的接線方式與不平衡保護方式,用2個字元表示。On the base of widely investigating and researching, author deems that the conventional reactive power compensation devices used by consumer had many defects with among others : lower response time, remaining residual voltage on the compensation capacitors, and so on. because of existing improper trigging time, it is impossible to realizing balance compensation for 3 - phrase unbalance loads
本文在充分調研的基礎上,認為目前採用的傳統的無功功率補償裝置存在響應速度慢、觸發時刻不合適、補償電容器上有殘壓、不能實行三相平衡補償、對電網產生污染、不能消除負荷本身產生的高次諧波等弊病。By analyzing the load factor and unbalance factor of distribution transformer, the method of calculating and selecting the low voltage reactive power compensation capacity and compensation equipments, and the connection mode of capacitors were presented
摘要通過對配電變壓器負載率和不平衡率的分析,提出低壓無功補償裝置補償容量的計算選擇方法和電容器的接線方式。The aim of this study is to investigate theoretically the possibility for activation of small mammalian myelinated nerve fibers without activating larger ones when stimulating a nerve fiber bundle with a monopolar point electrode using biphasic pulses, which can reduce the electrochemical damage resulted from stimulation pulses to nerve fibers. a simulation system for studying the electrical properties of mammalian myelinated nerve fibers was built based on a simple infinite and homogeneous volume conductor model. by use of an asymmetric but charge - balanced stimulation waveform, the sensitivity of excitation and blocking threshold of nerve fibers to fiber diameter, electrode - fiber distance was calculated. the results show that selective activation of small mammalian myelinated fibers may be possible in a region at some distance from the electrode using biphasic pulses
本研究的目的是要從理論上探討利用單電極雙向脈沖刺激實現哺乳動物神經纖維選擇性刺激, (即當刺激一束神經時,不興奮粗神經而興奮細神經)的可能性.雙向脈沖刺激可以降低刺激脈沖對神經纖維產生的電化學損傷.為研究哺乳動物有髓神經纖維的電特性,建立了一個基於簡單的無窮大、各向同性的容積導體模型的模擬系統.利用該模擬系統,採用「不對稱但電荷平衡」的雙向脈沖刺激,計算了神經纖維的興奮和阻斷閾值與纖維直徑、纖維-電極間距離的關系.結果表明:在距電極一定距離內採用該雙向脈沖刺激模式確實可以實現哺乳動物有髓神經纖維的選擇性興奮Because of forecasting reactive load at first, it can detect the change of voltage at low - voltage bus from the change of reactive load or the change of voltage at high - voltage bus, then it can decide that adjusting transformer tap or capacitor switch, and avoid blindly and deficient adjusting. on the condition the reactive power is balanced and voltage qualified, it can realize the switching times of loaded taps and capacitors being efficiently decreased
由於預先預測出無功負荷,提前了解了無功功率變化的趨勢,可以有助於判定低壓母線電壓變化是由無功負荷變化引起還是由高壓側電壓變化引起,從而適時決定是調有載調壓變壓器分接頭還是投切電容器,以此避免了盲目和不充分的調節,實現在保證無功基本平衡和電壓合格率的前提下,減少有載調壓變壓器分接頭的調節和並聯電容器組的投切次數。Test methods for communication cable - capacitance unbalance test
通信電纜試驗方法電容耦合及對地電容不平衡試驗Pair : the insulated conductors are twisted into pairs with different pitches so as to raise properties of crosstalk iso1ation and capacitance unbalance
線對:絕緣線芯以不同節距絞合成對,以提高串音隔離和電容不平衡性能。In the actuation, the feeling measure and the balance compensation, the gyroscope used the electric capacity with the high sensitivity, the low energy consumption, and combined with the high quality factor characteristic of the resonance main body, which enable its system to have the quite outstanding performance : the vibration gyroscopes were generally used to measure the rotation rate, but because of axial symmetry factor, the axial symmetry vibrating - shell gyroscope can be used to measure not only the rotation rate but also the rotation angle, moreover do not bring the accumulation error as a result of the integral
該陀螺在驅動、感測與平衡補償上採用具有高靈敏度、低能量消耗的電容,並結合諧振體高品質的特性,有相當優異的表現:振動式陀螺儀一般都是用來感測轉速,而軸對稱殼式陀螺儀由於軸對稱的因素,不僅可以用來感測轉速,而且可以感測物體的轉角,並且避免了由於積分而帶來的積累誤差。According to the characteristic of nine - area diagram of substation vol / var coordinated control, this system gives the defination of fuzzy sets and the degree of membership of input / output variables, and designs corresponding control rules. the results of simulation demonstrate the system can satisfy the constrains of the day - adjusting times of the switching of on - load transformer and paralleled compensation capacitors, and ensure voltage quality, reactive power basical balance. considering the var requirement in different load time period and the control demand in load saltation, a improved control scheme is provided. the results of simulation show the improved scheme can meet the demand of vol / var in different load time period, protect the wrong operation when either voltage or reactive power appears saltation, and decrease the times of regulation of the switching of on - load transformer and paralleled compensation capacitors finally, a background software module of substation vol / var coordinated control is designed, based on the supervisory control and data acquisition system of substation
模擬結果證明該系統能在各種負荷條件下確保電壓合格和無功基本平衡,且能滿足變電站對有載調壓變壓器分接頭日調節次數和並聯補償電容器組的日投切次數的限制。通過考慮不同負荷時段對無功功率的需求和負荷突變情況下的控制要求,對上述模糊控制策略進行了改進,模擬結果證明改進后的控制策略能滿足不同負荷時段對電壓和無功的要求、抑制電壓或無功突變情況下的誤動作,且有效地減少了有載調壓變壓器分接頭和並聯補償電容器組的調節次數。最後基於變電站scada系統設計了一后臺電壓無功綜合控制軟體模塊。According to the test results the hv capacitor banks which the unbalance current is larger have been adjusted
根據試驗結果對不平衡電流偏大的電容器組各臂電容值進行了調整。The study shows that this control approach can overcome those shortages of the methods which are adopted to control voltage and reactive power in substation nowadays, it can hold the voltage level in the regular bound and maintain the balance of reactive power in substation to the greatest extent, and it have the ability to seek the best solution. adopting this methods, the switching times of loaded taps and capacitors can be decreased efficiently and advance the running life - span of the transformer and capacitors and improve the economy benefits. this control approach is a advanced way ii and it is worth to study more and utilize
利用模糊神經網路對較好地實現對變電站的電壓、無功自動控制,能克服了目前在變電站電壓無功控制中普遍運用的分區方法存在的不足之處,不但可保持變電站電壓在合格的范圍內,盡量維持無功功率平衡,而且具有較好的尋優能力,有效減少變壓器有載調壓開關的切換次數和電容器組的投切次數,提高了變壓器和電容器的運行壽命,提高了經濟效益,是一種值得進一步探索和運用的較為先進的方法。A half - bridge bi - directional current mode high frequency inverter was proposed, and the problem of unequal voltage of capacitance in this circuit can be resolved by adding a balance coil
提出了半橋雙向電流源高頻鏈逆變器的拓撲結構,並對電路固有的電容電壓不平衡問題提出了解決方法,採用平衡繞組可以徹底解決電容電壓不平衡。On the basis of the mathematic model of asvg with one - cycle control, the reason that arouse the voltage fluctuation on dc side and imbalance of capacitances " voltage is found out. a simple and efficacious method is proposed according to one - cycle control
在對應用單周控制的靜止無功發生器建立數學模型的基礎上,分析使直流側電壓波動和使兩電容電壓不平衡的原因,結合單周控製法,提出了一種有效、簡單的解決辦法。Testing of cables, wires and flexible cords ; capacitance unbalance vde specification
電纜導線和軟線的檢驗.電容的不平衡性. vde規范The simulation results show that with the method, the capacitor voltages in the dc side are balanced effectively and the switch frequency reaches requirement
模擬結果表明:在合理選擇電壓平衡系數的情況下,該方法不僅能夠有效地平衡直流側兩電容上的電壓,也能夠使開關頻率滿足要求。分享友人