超電壓 的英文怎麼說
中文拼音 [chāodiànyā]
超電壓
英文
over voltage-
Do not use ammeter in circuits with more than 32v present
不得在電壓不要超過32v的電路上測試電流。In this thesis, the author analyses the deficiency in detecting and controlling function of the computer detecting and controlling system utilized in present transforming station. the strategy of design of software on operation and direction of 5 00kv transformer station is presented. it points out that we can deduce the mathematic analytical formula using the current, voltage and power of two terminals of transmission line as input. on this basis, we do realtime calculation of 500kv transmission line ' s parameter. we can also deduce the linear analytical formula of three - winding autotransformer ' s resistence using its current, voltage and power as input. the corresponding software is programmed on this basis
論文提出以輸電線路本端和對端電流、電壓、功率作為輸入量，導出了超高壓長線的波阻抗和傳播常數的數學解析式，在此基礎上進行了500kv輸電線路實時參數計算；提出以三繞組自耦變壓器的電流、電壓、功率為輸入量，導出了自耦變壓器繞組的電阻、電抗的線性解析式並進而對變壓器的實時參數進行計算；在此基礎上編制了相應的軟體。For single - range voltmeters, calibration will be made at cardinal points ( maximum 5 points )
單量程電壓表將就其基點進行校正（最多不超過五點） 。For single - range voltmeters, calibration will be made at cardinal points ( normally not exceeding 5 points )
單量程電壓表將按主要基點進行校正（一般最多不超過五點） 。A new low switching point voltage comparator
一種具有超低跳變電壓點的電壓比較器The overvoltage varies inversely with the current density to some extent.
超電壓在某種程度上隨電流密度成反比地變化。Power frequency electric field caused by ehv lines and its effect
超高壓架空輸電線的工頻電場及其影響一Calculation of electric field distribution near ehv power towers
超高壓輸電線路鐵塔附近的三維工頻電場計算Study on conductors turn over problem in 500kv ehv power transmission lines
超高壓輸電線路導線翻轉問題淺析Test amp; amp; research on ehv power transmission in high altitude area
關于高海拔超高壓輸電技術問題的試驗研究Effect of acsr on suppressing power frequency overvoltage of ehv transmission system
對限制超高壓輸電系統工頻過電壓的影響Effect of svc on restricting the temporary overvoltage of ehv transmission system
良導體地線限制超高壓輸電系統工頻過電壓的作用Power - frequency electric field of ehv transmission lines under condition of complex landscape
復雜地勢下超高壓輸電線路的工頻電場The study on single - pole adaptive reclosure of ehv transmission lines with the shunt reactor
帶並聯電抗器的超高壓輸電線單相自適應重合閘的研究The current in an inductor lags the voltage by 90° or, what is the same thing, the voltage leads the current by 90°.
電感器中的電流落後于電壓90，或者說，電壓超前于電流90。The ultrahigh - voltage direct current ( uhvdc ) link comprises two substations and a power transmission system using breakthrough technology to transmit electricity at ultrahigh voltage ( 800 kilovolts ), which will minimize the amount of power lost in transmission
該超高壓直流輸電（ uhvdc ）線包括兩個變電站以及一個採用了突破性超高壓（ 800千伏）電力傳輸技術的電力傳輸系統，這將減少傳輸過程中的電力損失。The modulating signals of firing delay angle at the rectifier and firing lead angle at the inverter, and the excitation voltage are chosen to be control variables. the offset of the current of dc line and the extinction angle and the power angle of generator are chosen to be control outputs. then a nonlinear controller is designed for the system under study according to direct feedback linearization theory
以整流側觸發延遲角的調節信號、逆變側觸發超前角的調節信號以及發電機勵磁電壓作為控制變量，以直流線路電流、逆變側關斷角以及發電機功角的偏移量作為目標輸出，用直接反饋線性化方法設計了系統的非線性控制器。In the positioning servo - system, which generally is configured by the d. c. pulse width modulator ( pwm ) velocity governing system and position servo - loop, the parameter perturbance of pwm velocity loop really exist by reason of such as the load behavior ; power voltage supply ; operating setting value, etc. 1, 2 ， and it cannot be ignored. by using the identification technique to form the mathematical model of the system, authors have confirmed the facts. therefore, to design the discrete sliding mode controller ( dsmc ) of the positioning servo - system, the perturbed parameters value bounds of the pwm velocity loop, which is as the controlled plant of position servo - loop, should be accounted. consequently, the design principle of dsmc for accounting system with parameter perturbance is proposed by the authors. the proposed method can ensure the stability of system with parameter perturbance and the behavior of non - overshoot, fast precise positioning. in order to reveal the effects of the design method, the comparative research work is done by the authors. also, it has been tested in an industrial experiment, the results proved it is satisfactory
由直流脈寬調速系統（ pwm ）和位置環構成的定位系統中，速度環的參數隨負載特性；電網電壓；給定工況而攝動是不容忽視的.作者通過系統辨識建模也證實了這一事實1 ， 2 .因此在設計位置環的離散滑模控制時，必須針對速度環（即位置環的控制對象）的參數攝動范圍採用「對象參數攝動離散滑模控制器的設計方法」 ，以確保系統在參數攝動時的穩定性和快速、無超調、準確定位的優良動態品質.為剖析該設計方法的控制效果，本文作了對比性研究，並將該設計方法用於工業試驗中，取得了滿意的結果Protection of telecommunication systems against lightning, electrostatic discharges and overvoltages from electric power installations ; provisions against overvoltages
由於電力設備產生的閃電靜電和超電壓現象對通信系Transient overvoltage strength
瞬間超電壓強度分享友人