Through the analyses to the asynchronous oscillation in power system, by systematic researches on the existing out-of-step criteria of power system, a power system separation device based on the law of changing impedance angle has been introduced in this article.
本文通过对电力系统的失步振荡过程进行分析,在研究已有的失步解列判据的基础上,提出了一种有效的判据,即利用阻抗角变化的规律来判断和检测失步状况,通过计算设备安装处测量的阻抗值来正确区分设备动作区,极大的提高了装置的灵敏性,并利用电压基波的变化曲线解决了振荡中心落在设备安装处时发生的死区问题。
Based on effect of the impedance angle value size in flicker calculation formula, an engineering estimation method of impedance angle for flicker calculation is presented in this paper.
本文在考察了闪变计算公式中网络阻抗角数值大小的影响作用后,提出了一种闪变计算中阻抗角工程实用估算方法。
Real-time,on-line measurement of impedance angle of the transducer is the key to realize it.
超声治疗设备中超声换能器的阻抗特性在工作时发生变化而导致静态匹配失效,采用固定频率下的动态匹配可解决此问题,实时、在线对超声换能器阻抗角进行测量是实现该方法的关键。
The necessity of installing phase to phase fault protection on LV side of transformer is presented in this paper by analyzing the protection capability of phase to phase impedance protection on HV and MV sides of 500kV transformer against phase to phase fault on its LV side.
通过分析 50 0kV变压器高、中压侧相间阻抗保护对其低压侧相间故障的保护能力 ,阐述了变压器低压侧相间故障保护配置的必要性 ,并对保护的配置方式提出了建议。
An Engineering Estimation Method of Impedance Angle for Flicker Calculation
闪变计算中阻抗角工程实用估算方法
Under a certain condition, this interface impendance can be transferred to the constant phase angle( CPA) impedance.
在一定条件下,此界面阻抗过渡到恒相角阻抗。
The Calculation on the Impedance Matching Techniques of Wide Scan Angle Phased Array Antenna
宽角扫描相控阵天线有源阻抗的计算
intrinsic impedance
内在阻抗;内阻抗;内禀阻抗;本征阻抗;固有阻抗
Error Analysis of Ground Resistance Measurement by Three Electrode Angle Method
三极夹角法测量接地阻抗的误差分析研究
impedance transducer
阻抗传感器，阻抗换能器
impedance compensator
阻抗校正器阻抗补偿器
acoustic impedance density
声阻抗密度，声阻抗率
impedance cardiogram (abbr.ICG)
心阻抗图血流，心阻抗图，阻抗心动图
A Coupling-Fed Circularly Polarised Microstrip Antenna With Wider Impedance Bandwidth And Higher Low-Elevation Gain
一种改进了阻抗带宽和低仰角增益的双频圆极化微带天线的设计
Impedance Matching and Mathematical Model of YNvd-Connected Balance Transformer
星形-开闭三角形接线平衡变压器的阻抗匹配与数学模型
Application of elastic impedance inversion with two angle stack gathers to predict gas-bearing reservoir of mid-deep layer.
两个角度弹性阻抗反演在中深层含气储层预测中的应用
impedance audiometer
阻抗听力计，阻坑测听仪
Zero reactance;Infinite reactance;Zero reactance - Infinite susceptance;Infinite reactance - Zero susceptance
零阻抗;无穷大阻抗;零阻抗-无穷大电纳;无穷大阻抗-零电纳
electrical resistivity
电抗值,电阻（率）
electrical leakage resistance
抗电气泄漏,漏电阻抗
Electrical impedance or admittance.
导抗电阻抗或电导纳
ICG (impedance cardiogram)
心阻抗图，阻抗心动描记图