1)cut-off overvoltage截流过电压
1.The paper discussed the mechanism ofcut-off overvoltage in condition of the first-phase and the rest breaking for three-phase shunt reactor,and proposed the choosing method of resistance and capacitance for R-C absorbing device and introduced the situation of on and off the shunt reactor on site.阐述了三相并联电抗器首相开断和后两相开断截流过电压的机理,提出了R-C阻容吸收装置的电阻和电容的选取方法,介绍了现场实际合切并联电抗器情况。
2)overvoltage protection of current cut-off截流过电压保护
1.The cause of blackout and its influencing factors such as neutral grounding mode,overvoltage protection of current cut-off,operation conditions,low voltage side connection mode etc are analyzed.通过对某大型化工企业一次大面积停电事故的事故现象、现场情况、事故波形的分析和讨论,阐明了其电气接线、运行管理、故障过程均具有典型性,分析了事故原因和中性点接地方式、截流过电压保护、运行环境、低压接线方式等对该事故的影响,并为化工、冶金类企业的供电安全提出了建议。
3)Overvoltage of High Frequency Breaking Again三相同时截流过电压
4)Chopped Impulse Overvoltage截波过电压
1.The Research of Distribution TransformerChopped Impulse Overvoltageproof Reactor;能降低配电变压器截波过电压的电抗器的研究
1.The Research of Distribution Transformer Chopped Impulse Overvoltageproof Reactor;能降低配电变压器截波过电压的电抗器的研究
2.Smiulated Analysis of Chopping Wave Overvoltage of Distribution Transformers Based on Simple Pattern基于简易模型的配电变压器截波过电压仿真分析
3.Study on Mechanism and Defend of Chopped Wave Overvoltage of Transformers Based on Insulator Arc-over;基于绝缘子闪络的变压器截波过电压机理及防护研究
4.nonconducting voltage截止[不导电]电压
5.Calculation of Electric Field and Wave Process in Ultra over Voltage Power Transformer;超高压电力变压器电场及波过程计算
6.Time-domain Calculation of Transformer Windings Overvoltage under VFTO Considering Frequency-dependent Parameters;陡波前过电压下频变变压器绕组过电压时域算法研究
7.Slow Front Overvoltage and Insulation Coordination of ±800 kV UHV DC Transmission Line±800kV特高压直流线路缓波前过电压和绝缘配合
8.Characteristic of Very Fast Transient Overvoltages in GIS and Analysis of Influencing Factors;GIS中陡波前过电压特性及影响因素的研究
9.A stable flying capacitor voltage must be maintained to facilitate the operation of the chopper.在斩波电路的工作过程中，稳定的浮动电容电压是非常重要的。
putation and Simulation of Transient Voltage in Lightningproof Transformer Based on Wave Reflection;基于波反射的防雷变压器内部过电压分布的计算与仿真
11.Study on Modeling of Power Transformers and Fast Simulation Algorithm under Very Fast Transient Overvoltages;陡波前过电压下变压器的建模及快速仿真算法研究
12.Low-pressure Conductor Section Selection And Determine Of Power Supply Radius低压导线截面选择及供电半径的确定
13.The selection and energy saving of the lead cross-section of the low voltage distribution network line低压配电网线路导线截面选择与节能
14.Explain the characteristics of piezoelectric crystals and the factors relating to the resonant frequencies of a piezoelectric crystal, and the procedure of the pulse-echo method.说明压电晶体的特性和与压电晶体的共振频率有关的因数，以及脉波－波法的过程。
15.tap a telephone or telegraph wire to get information.通过电话或者电报截取消息。
16.full-wave voltage impulse(避雷器的) 全波电压电击
17.overvoltage protection varistor过电压保护压敏电阻器
18.Analysis of Transmission Process of Fault-Generated Travelling Wave along EHV Transmission Lines and Performance of Transient Current Protection超高压输电线路波过程及暂态电流保护性能分析
相关短句/例句
overvoltage protection of current cut-off截流过电压保护
1.The cause of blackout and its influencing factors such as neutral grounding mode,overvoltage protection of current cut-off,operation conditions,low voltage side connection mode etc are analyzed.通过对某大型化工企业一次大面积停电事故的事故现象、现场情况、事故波形的分析和讨论,阐明了其电气接线、运行管理、故障过程均具有典型性,分析了事故原因和中性点接地方式、截流过电压保护、运行环境、低压接线方式等对该事故的影响,并为化工、冶金类企业的供电安全提出了建议。
3)Overvoltage of High Frequency Breaking Again三相同时截流过电压
4)Chopped Impulse Overvoltage截波过电压
1.The Research of Distribution TransformerChopped Impulse Overvoltageproof Reactor;能降低配电变压器截波过电压的电抗器的研究
5)overvoltage cutoff过电压截止，过电压切除
6)voltage/current restriction电压电流截止
1.In this paper,the defects of conventional contro l methods for induction heating power supply is pointed out,the primary principle of PI controller is briefly described,and the control circuit based on double closed-loop is designed,also,the working principle of this circuit based on constant power output control andvoltage/current restriction is analyzed.分析了其实现恒功率输出及电压电流截止功能的工作原理。
延伸阅读
电力系统电压互感器谐振过电压电力系统电压互感器谐振过电压resonance overvoltage due to potential transformer in electric power system南定理，可将三相对地电容等效连接在电撅变压器和互感器的两个中性点之间，由此着出，谐振属于零序性质。无论是电源合闸至空载母线所引起的电压互感器的涌流现象，还是线路中发生对地闪络和熄弧后C。中残余电荷经电压互感器放电所引起的磁饱和现象，都会在一定的C0值下激发起谐振过电压，它表现为电力系统中性点发生位移，并全部反映至开口三角形绕组，引起虚幻的接地故障信号。这是配电网中造成故障最多的一种内部过电压. 图1中性点不接地系统中三相电压 互感器接线图和等效谐振回路(a)三相电压互感导接线图;(b)等效谐振回路由于谐振的零序性质，导线的相间电容、余弦电容器和传愉的三相有功负荷均对谐振不起作用。随着C。的增加(即导线增长)，将依次发生高频、工频和分频谐振。在很短的空母线合闸时，C0很小，会产生3倍以上的高频谐振过电压。较大的c0则会出现工频谐振过电压，此时一相对地电压很低，其它两相的对地电压接近于线电压，故工频谐振和单相接地现象往往难以区别。当母线上的出线较长时，C。很大将会发生分频谐振，其频率略低于电源颇率的一半，电压表的指针会发生低频摆动，谐振电压分t和开口三角形电压接近于相电压，由于此时谐振频率和相应的励磁感抗减半，互感器趋于深度磁饱和，励磁电流急剧增大，高达额定值的数十倍以至百倍以上，从而造成互感器的发热、喷油以至爆炸。在高频和分频谐振时，三相对地电压同时升高。可以通过两种途径来抑制上述谐振现象.其一是采取阻尼吸能措施，即在开口三角形绕组两端临时并接一个低值电阻(在6一10kV小电网中，可用200~50ow的白炽灯泡)或将互感器高压中性点经大电阻接地。其二是破坏谐振条件，即人为地增大对地电容使之超过某一临界值，或将开口三角形绕组临时短接，或将互感器高压中性点临时不接地，或将电网改为通过消弧线圈接地。d旧nl一x一tongd旧nyo hugonq一x旧zhen guod{anyo电力系统电压互感公谐振过电压(resonanceovervoltage due to potential transformer inelectrie power system)电磁式电压互感器由于铁芯磁饱和引起的铁磁谐振过电压。在中性点不接地和直接接地电力系统中均有可能发生.中性点不接地系统中电压互感器的谐振过电压图1中电源变压器的中性点不接地，电压互感器的中性点直接接地，其励磁电感La、L。和Lc分别与导线和母线的对地电容C。相并联而形成谐振回路。
