1) double-frequency measurement
双变频测量法
1.
Additionally,double-frequency measurement based on low-frequency signal injection is put forward for branch grounding resistance measurement in faulty branch selection to avoid the influence of the distributed grounding capacitance of DC system on low-frequency signal injection.
并在低频信号注入法的基础上提出了双变频测量法,测量各支路的接地电阻值,从而判断出故障支路,解决了低频信号注入法容易受到直流系统支路中存在的对地分布电容的影响问题。
2) measuring method based on AC variable frequency
交流变频测量法
1.
The measuring method based on AC variable frequency, a new method to measure .
提出了一种新的蓄电池单体电池内阻测量方法———交流变频测量法,着重介绍了该装置的工作原理及硬件与软件设计。
2.
With C8051F006 as its core and adopting the measuring method based on AC variable frequency, the new instrument is capable of performing accurate on-line measurement of grounding resistance witho.
设计了一种新的双钳口接地电阻在线测量仪 ,该仪器以C80 5 1F0 0 6单片机为控制核心 ,采用交流变频测量法 ,实现了接地电阻的准确在线测量 ,而且不需要辅助地极和断开设备接地线。
3) frequency conversion measurement
变频测量
1.
A frequency conversion measurement method is introduces,and the hardware and software of the system are outlined.
首先阐述了电力系统接地电阻测试的工作原理,提出用变频测量法的研究方案,同时介绍了测试装置各个部分硬件电路的设计思想。
2.
The method of frequency conversion measurement can shun the interference of 50 Hz by adjusting the frequency of the measuring power.
变频测量法通过调整电源频率来避开电网的干扰频段 ,然后对试品电压、电流进行跟踪采样 ,采用FFT技术实现介质损耗和试品电容的计算。
3.
On the basis of analysis and comparation of conventional and some morden dielectric loss measurementmethods, considering the interference of strong electric field of the power grid in local measurement, a frequency conversion measurement method of dielectric loss is presented.
本文在分析比较了介质损耗传统测量方法和常用现代测量方法的基础上，针对现场测量时受工频电网强电场干扰的问题，提出了介损变频测量法。
4) variable frequency measurement
变频测量
1.
Based on the analysis of conventional and modern dielectric loss measurement methods,the variable frequency measurement of dielectric loss is an effective method to suppress the interference of strong electric field of power grid on site.
分析介质损耗传统测量方法和常用现代测量方法,现场测量时受工频电网强电场干扰的问题比较突出,介质损耗变频测量方法成为解决问题的有效方法。
5) bivariate cycloconverter
双变量交交变频
1.
Based on the requirement of the hoist speed control,the effective optimization of asynchronous motor drived by six-wave bivariate cycloconverter was analyzed.
以提升机调速要求为背景,分析了六脉波双变量交交变频器控制的三相异步电动机效率优化,提出了最佳转差率控制方法。
6) double time frequency measuring method
时频测量法
补充资料：测量与测量结果
测量与测量结果
测量与测量结果测量是以确定某个量的值为目的的一整套运作。例如，用米尺量布以确定布的长度为多少米，用体温汁量体温以确定体温为多少摄氏度等。测量的根本意义在于，可以将不能直接计数的量，如物体的长度、体积(容量)、质量(重量)等，通过测量确定其为多少米、多少升、多少千克等，从而变得可以汁数。依测量对象的性质和预定测量要求的不同，测量可能是简单的，也可能是复杂的。简单的量布和复杂的珠穆朗玛峰海拔高度的测量，都是对长度这个量的测量。 测量结果指由测量所得到的被测之量的量值，而量值则由牧字乘以计量单位组成。不管测量进行得多么仔细，测量结果都只是被测之量的真实量值的一个近似值。因此，在完整表述测量结果时，应包括给出测量不确定度。此外，必要时还要给出一些附加说明，如是单次测量所得还是多次测量所得，系统误差是否已作修正，以及测量时影响量的取值范围等
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条