1) resistive current
阻性电流
1.
Research on measurement of resistive current in XLPE cable using capacitive current compensation method;
用容性电流补偿法检测XLPE电缆中阻性电流的研究
2.
Analysis on Measuring Error of Resistive Current in Metal Oxide Arrester
氧化锌避雷器阻性电流误差分析
3.
Dielectric properties and resistive currents of ZnO nonohmic materials prepared with different technical procedures were investigated.
实验发现并理论推导了ZnO非欧姆陶瓷元件的阻性电流正比于其电容和压敏电压的乘积,这一关系可作为ZnO元件的质量控制手段。
2) Resistance Current
阻性电流
1.
Analysis and Discussion for Zinc-Oxide Arrester s Defects and its Resistance Current;
氧化锌避雷器缺陷与阻性电流的分析探讨
2.
The operation condition of metal oxide surge arrester (MOA) in system can be judged by using the hotline detection method, which collects the voltage and leak current signal of MOA on the spot, then calculates the resistance current of MOA by extraction algorithm software of resistance current.
采用带电检测氧化锌避雷器(MOA)的方法,现场采集MOA的电压和总泄漏电流信号,然后由阻性电流提取算法软件计算得到MOA的阻性电流,以此可判断MOA在系统中的运行状况。
3.
Through analysis to internal moisture in MOA,full currernt and resistance current increase under operation voltage,especially to the feature of larger resistance current component,abnormal data in phase C are found in live testing shortly after the group of MOA are put into operation.
针对MOA内部受潮劣化后,其运行电压下全电流及阻性电流均增大,尤其是阻性电流分量增大幅度更大的特点,在对一组投运不久的MOA进行带电测试,发现C相数据异常,随后对同期产品逐一进行了带电测试,对数据异常者进行了综合分析判断,确认了MOA的缺陷是制造时由于内部受潮或密封不良造成。
3) resistive leakage current
阻性电流
1.
Monitoring the basic component ir and the third component i3r of the resistive leakage current can reflect the MOA s operation state.
阻性电流中的基波分量ir和三次分量i3r可以反映金属氧化物避雷器(MOA)的运行状况。
2.
In this paper, research status of MOA resistive leakage current on-line monitoring is introduced, different monitoring methods are analyzed and influencing factors of monitoring are presented, such as influence of power system s harmonic voltages, inter-phase interference, samp.
本文介绍了目前MOA阻性电流在线监测的研究现状;详细分析了各种阻性电流在线监测方法的优缺点;提出影响MOA阻性电流监测的因素和问题,如谐波电压对阻性电流监测的影响,相间干扰对阻性电流监测的影响,全电流的取样方法对阻性监测的影响,并且针对其中的一些问题作了详细的研究。
3.
Fault and aging of MOA can be found timely through on-line resistive leakage current monitoring system.
监测流过MOA的阻性电流可以及时的发现其老化或劣化现象。
4) differential current resistance component
电阻性差流
5) MOA resistive current
MOA阻性电流
1.
The key to the detection of MOA resistive current is the detection of the phase difference between fundamental component of voltage and fundamental component of leakage current.
MOA阻性电流检测的关键在于电压基波分量与泄漏电流基波分量相位差的检测。
6) cardinal wave of resistive current
阻性电流基波
1.
The fundamentals of measurement of cardinal wave of resistive current was described and the necessity for simultaneous sampling at measuring cardinal wave of resistive current was analyzed.
介绍金属氧化物避雷器(MOA)阻性电流基波测量的基本原理,分析了测量阻性电流基波时同步采样的必要性,采用同步采样AD转换器MAX1310,可保证电压电流信号同时采样,避免了投影角的测量误差;采用锁相环技术可实现特定周期内整数点采样。
补充资料:零阻电流法测电偶电流
分子式:
CAS号:
性质:测定电偶对之间电阻为零的条件下所流过的电偶电流的方法。最先进的是自动零电阻电流计法,其原理是用一个运算放大器的同相和反相输入端分别接电偶对的两个金属,放大器输出端通过已知阻值的电阻反馈至反相输入端。运算放大器会自动调节两个金属之间电位差为零。流经反馈电阻上的电流即电偶电流,可通过反馈电阻上的电压降(即运算放大器的输出电压)来测定。该法灵敏、快速。
CAS号:
性质:测定电偶对之间电阻为零的条件下所流过的电偶电流的方法。最先进的是自动零电阻电流计法,其原理是用一个运算放大器的同相和反相输入端分别接电偶对的两个金属,放大器输出端通过已知阻值的电阻反馈至反相输入端。运算放大器会自动调节两个金属之间电位差为零。流经反馈电阻上的电流即电偶电流,可通过反馈电阻上的电压降(即运算放大器的输出电压)来测定。该法灵敏、快速。
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