Nominal voltage of impulse voltage generator 冲击电压发生器标称电压
Discharge voltage, current and impulse duration have direct influence on material removal rate, but with the material removal rate rising the roundness is not always decreased. 电压、电流和脉宽主要影响材料的去除率,但大的材料去除率并不意味着高的整形效率。
Methods The determinator was invented to detect the patients pain sensory with high voltage and low current impulse. 方法:使用高电压小电流脉冲刺激人体,在产生痛觉的同时却不会造成皮肤损伤。
Aiming at the current and voltage impulse problems in a high power pulse forming network with capacitor energy storage system, the equivalent circuit model of the pulse forming network is established. 针对电容储能高功率脉冲成形网络工作过程中存在的电流和电压冲击问题,建立了脉冲成形网络的等效电路。
The SCM Controlled High Voltage Impulse Electricity Net Alarm System 单片机控制高压脉冲电网报警系统
Simulation of Step Response of Resistance Voltage Divider for Impulse Voltage 电阻型冲击电压分压器阶跃波响应的仿真
Study on Mechanism of Pasteurization Using Normal Voltage Spontaneous Impulse Discharge 常规电压自发脉冲放电杀菌机理初探
Anti-Interference Measures of Digital Measuring System in High Voltage Impulse Tests 冲击电压数字测量系统的抗干扰措施
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,监测变压器绕组变形的方法主要有低压脉冲分析法(LVI),频率响应分析法(FRA)和阻抗分析法。
There are two methods of detecting the winding deformation faults in power transformer, the Low Voltage Impulse method ( LVI) and the Frequency Response Analysis method ( FRA). 检测变压器绕组变形的方法,国际上较早提出的是低压脉冲法(LVI),其后有频率响应分析法(FRA)。
A Measuring System for Special High-Voltage Impulse 一个特种高压脉冲测量方法的探讨
This paper describes an investigation into the influence of rise time t_f of a practical step on the determination of response time T_1 when the unit step response method is used for a high voltage impulse measuring system. 本文研究确定冲击电压测量系统方波响应时间T1时,实际方波的波前上升时间tf对测量结果带来的影响。
The discharging curves for power frequency voltage and lightning impulse voltage are measured and its fluctuation range caused by variation of air condition is found. 该式能把工频电压和雷电冲击电压下空气隙的放电曲线箍在特定的范围内。
A New Type of High Voltage Impulse Generator Without Damping Resistance and Charge Resistance 无限流保护电阻及充电电阻的新型冲击高电压发生器
Algorithm of Reconstruction of High Voltage Impulse Waveform Based on Discrete Gabor Transform and Incremental Wiener Invert Filter 基于离散Gabor变换和增量Wiener滤波器的冲击电压波形重构算法研究
The low voltage impulse ( LVI) method for detecting the transformer winding deformation is presented. 对变压器绕组变形的低压脉冲检测法进行了研究。
This paper introduces the method of fast determination of waveform parameters of voltage of impulse test by the measurement functions of digital oscilloscope. 提出了利用数字化示波器的测量功能快速确定冲击试验电压波形参数的方法。
A Study of the Low Voltage Impulse Method for Detecting the Transformer Winding Deformation 检测变压器绕组变形的低压脉冲法的研究
The effect of the alternating pre stressing voltage on the impulse spark over voltage depended on where the switching impulse is superimposed on the AC waveform. 交流预电压对其冲击击穿特性影响取决于操作波叠加在交流上的位置。
This paper illustrates the methods of extracting characteristic parameters and deformation recognition using wavelet transfor, which applied in low voltage impulse ( LVI) method on the transformer winding deformation detection. 论述变压器绕组变形检测的低压脉冲(LV1)法中利用小波变换提取特征量及变形识别的方法。
Precision would be influenced due to low sample frequency or interfering signal in the application of A/ D method. Thus, a multi-point average method within neighboring voltage impulse signal has been raised to eliminate random error to get a better precision. 为降低采用A/D采样技术进行扭振测量时采样频率或干扰信号等对测量精度的影响,提出了一种采用相邻电压脉冲信号间多点平均的方法消除随机误差。
TDG processed by this method demonstrate that this algorithm approaches high accuracy and stability and satisfies the needs of reconstruction of digital high voltage impulse waveform. 2TDG波形计算结果表明该方法可以有效实现冲击电压数字化测量波形复原,具有较高的准确度和稳定性。
The article expounds factors that cause track circuits with high voltage impulse, meanwhile, which also analyses defects emerged on Specialized Railway Line inside CSSC and puts forward some suggestions for solution to these problems. 阐述了产生高压脉冲轨道电路的原因,分析了长钢专用线存在的问题,并提出了解决问题的建议。
Research and application of high voltage electronic impulse circuit 电子高压脉冲轨道电路的研制与应用
By using the high voltage flank-flash method of orientation for cable faults instead of the old method of low voltage impulse, the faults of high voltage electric power cable can be searched exactly and quickly. 采用高压直闪电缆故障定点法替代原低压脉冲法,能够准确、快速地查找高压电力电缆故障。
Then, the process of estimating initial position by injecting voltage impulse vector is expounded. 阐述施加电压脉冲矢量检测初始位置方法的实现过程。
The average discharge field intensity of pre-exist DC voltage superimposed with switching impulse voltage increases with increasing DC composition and rod-plane was more influenced than soft line. 预先存在的直流电压对直流叠加操作冲击电压放电特性有一定影响,即直流叠加操作冲击放电的平均击穿场强随直流电压成分增大而增大,且棒-板间隙受影响程度大于软母线相地间隙。
The operating converter transformer not only withstands AC voltage, lightning impulse and switching overvoltage, but also withstands DC voltage, superimposed AC-DC voltage and polarity reversal voltage. 运行中的换流变压器除承受交流电压、雷电冲击和操作过电压外,还要承受直流、交流叠加直流及极性反转电压的作用。
The operating converter transformer? not only withstands superimposed AC-DC voltage, but also subjected to various operative-over voltage, lightning impulse voltage and polarity reversal voltage effects, these will bring serious challenges to valve side winding insulation. 运行中的换流变压器除受到交直流叠加电压外,还要承受各种操作和雷电冲击过电压以及极性反转电压的作用,给阀侧绕组的绝缘带来严重挑战。
However, the coming substantive power electronic equipments, impactive and nonlinear loads in power system lead to a series of power quality problems, such as voltage sag, voltage swell, voltage fluctuation, harmonics, voltage notch, impulse, oscillation transient and so on. 但随之而来的各种电力电子设备、冲击性与非线性负荷的大量投入,导致供电质量出现电压暂降、电压暂升、电压波动、谐波、电压缺口、脉冲与振荡暂态干扰等一系列电能质量问题。