線繞變阻器 的英文怎麼說
中文拼音 [xiànràobiànzǔqì]
線繞變阻器
英文
wire rheostat-
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。In the models, the iron core nonlinearly of the traction transformer and the magnetic hysteresis effect without the b - h curve are considered. having tested by digital simulation, the winding parameter has not changed in the state of external fault or magnetizing inrush etc. but the winding parameter has obviously changed in state of inter fault or inter - turn fault. ( 3 ) the rules three phases converted to two phases of traction transformer in electric railways are developed in this paper
（ 3 ）利用牽引變壓器磁鏈平衡方程，建立了基於系統辨識理論的雙繞組單相接線牽引變壓器、阻抗匹配平衡牽引變壓器及scott （斯科特）接線牽引變壓器的「灰箱」模型，該模型考慮了牽引變壓器鐵芯非線性和磁滯效應，但又不直接反映在模型中，並且無需鐵芯的b - h曲線數據。Considering the above control strategies which make the controller can not be real - time processing because its workload has increased, control circuits of the main switches based on eprom are designed, which can implement control scheme of firing angles and phase voltage. furthermore, it avoids power converter saturation in the process of commutation
上述控制策略的引入造成控制器運算量增大、難以在線實時控制，又設計了基於eprom的主開關器件通斷控制電路，實現了開關磁阻電動機開通關斷角控制及對施加於相繞組上電壓的優化控制，同時避免了換相時可能引起的功率變換器飽和現象。The low voltage impulse method, frequency response analysis method and short - circuit reactance method, which can be used to measure and diagnose the deformation of power transformer winding, are introduced in the paper
目前，監測變壓器繞組變形的方法主要有低壓脈沖分析法（ lvi ） ，頻率響應分析法（ fra ）和阻抗分析法。這些方法都需使變壓器退出運行，在變壓器離線情況下對變壓器繞組變形進行測量的。Initially, the company has engaged in the development and manufacture of testing instruments primarily for the said governmental institutes, later expanding its activities toward the field of electrical industries in general. taking advantage of technological prestige, the company has in the meantime developed unique instruments one after another which have successfully met the demand of major electrical machine manufacturers for rationalization and increase of production efficiency, thus enabling the company to realize steady growth and maintain continual business relations with more than 400 domestic and overseas customers
本測試儀可用作繞組線圈電阻及溫升測試外，也可用作為普通的數字型電阻儀測試未加交流電壓狀態時的電阻值。本儀器在電機或變壓器等繞組設備的機械加壓的工作狀態下，可隨時連續檢測其線圈電阻和溫度的變化，而且在切斷電源后，亦可連續測量，測量安全數據準確。分享友人