介质损耗

基于DSP的绝缘油介质损耗测量系统设计

Design on Measuring System of Insulating Oil Dielectric Loss Based on DSP

基于DSP的低功耗介质损耗测试仪的研制

Development of a Lower Power Consumption Dielectric Loss Angle Tester Based on DSP

基于DSP的容性设备介质损耗因数在线监测方法

Method for on-line monitoring the dielectric dissipation factor of high voltage capacitive apparatus

基于DSP介质损耗变频测量仪的研制

Development of Frequency Conversion Device of Dielectric Loss Measurement

用傅里叶变换测量介质损耗因数tanδ的软件同步算法

New Emendatory FFT Algorithm of Measuring Dielectric Loss Factor tan δ

电磁式电流互感器介质损耗因素（tanδ）测试方法

Measurement of Medium Consumption Factor for Electromagnetic Current Transformer

电流互感器高电压介质损耗因数tanδ的测量

Measurement of High Voltage Dielectric Loss Factor tan δ of Current Transformer Test

基于DFT频域校正的介质损耗角测量算法

Measurement of dielectric loss based on discrete Fourier transform spectrum correcting algorithms

通过对εr以及介质损耗随温度的变化特性的研究，证实了缺陷偶极子对材料介电性能的影响。

Effect of defect dipoles on dielectric properties is approved by investigation of temperature dependence of dielectric constant ε r and dielectric loss .

一种提高CVT绝缘介质损耗及电容量测量准确度的有效方法

Improving Measurement Accuracy of Insulation Dielectric Loss and Capacitance of CVT

一种新型介质损耗tanδ测量系统研究

Measuring system for dielectric loss tan δ

XLPE电缆绝缘介质损耗角正切测试方法的探讨

On the Measurement of Tangent of Dielectric Loss Angle in XLPE Cables

结果表明：莫来石－富硅玻璃系样品有效低的介电常数ε，但介质损耗tgδ偏高。

Experimental results show that the mullite ceramics with additives of rich-silica glass possesses lower dielectric constant but slightly higher dissipation .

基于Kaiser窗频谱校正的介质损耗因数测量

Dielectric Loss Factor Measurement Based on Kaiser Window Spectral Correction

但是过量的Cr会偏聚在晶界处，甚至形成一层氧化物层，降低样品的电绝缘性能，使得介质损耗增加。

While more Cr3 + results in the formation of an oxide layer which lowers the insulating property and increases the loss of the specimens as well .

接下来两章分别从现象和理论上对在线电力电容器的局部放电和介质损耗tgσ进行了详尽分析。

The following two chapters do analysis in details mainly on PD and dielectric loss tangent ( tg δ ) for on-line capacitor in both phenomena and theories .

介质损耗角正切tgδ的测试是电气设备绝缘监督的一项重要措施.做好介质损耗的测量对于发现电气设备绝缘隐患，保证电气设备的安全运行有着重要意义。

The testing of medium wear-angle tangent tg δ is an important measure to monitor insulation of electrical machines , and also benefits the safe operation of electrical equipments .

800℃热处理后的厚膜在室温、频率1kHz下相对介电常数εr和介质损耗tgδ分别为455、0.036。

Dielectric constant ε r and dielectric loss tg δ of the thick film annealed at 800 ℃ are 455 , 0.036 , respectively .

利用所研制的高精度无源单匝穿心式小电流互感器，建立了一种基于FFT的介质损耗测量方法，它可以有效地消除谐波和工频信号波形不工整的影响，并进行了实验验证。

Using the passive high-precision current transformer founds a method to measure dielectric loss based on FFT which can eliminate effects of harmonic and current frequency excursion and conducts an experiment .

结果表明：SOLGEL法合成PZT粉制备的PMZN系压电陶瓷材料具有机电耦合系数高，介质损耗小，介电常数与机械品质因数适中等特点；

The results show that the materials which are prepared by sol gel process have high electromechanical coupling coefficients , low dielectric loss and suitability between dielectric constant and mechanical quality factor .

由于DAP及铝溶胶的引入使得介电常数ε有所提高，介质损耗tanδ降低，同时热分解温度也有所提高。

DAP and aluminum sol would increase dielectric constant ε and decrease dielectric loss tan δ a little , and increase the heat decomposition temperature some .

采用空气中的一次烧成工艺，研究了氧化温度对SrTiO3.晶界层电容器试样的介电常数ε、绝缘电阻率p及介质损耗tgδ的影响；

The effects of oxidizing temperature on the dielectric constant ε, resistivity p and loss factor tg δ 5 of SrTiO_3 boundary layer capacitors single-fired in air were investigated .

该测试装置能够完成的测试功能相当于：RLC测试仪、介质损耗角测试仪、MOA测试仪、电气参数测试仪、直流电阻测试仪以及电表校验仪。

The functions of this meter include RLC meter , dielectric loss angel meter , MOA meter , electric meter , direct-resistance meter and check gauge .

在1MHz下测试了材料的介电常数及损耗。薄膜具有较高的相对介电常数和较小的介质损耗。

The thin films have higher relative dielectric constant and lower dielectric loss .

详细说明了利用高压西林电桥和高压标准电容器测量电力电容器的电容和介质损耗角正切（Tanδ）的原理；扩大量程的途径及注意事项；

The measurement principle for the capacitance and loss angle tangent of dielectric ( Tan δ) of power capacitor used by a high-voltage SCHERING bridge and a high-voltage standard capacitor are introduced in detail .

介质损耗因数（tanδ）是绝缘在线监测的一个重要参数，它能很好地反映电容型设备的绝缘状况。

Dielectric dissipation factor ( tan δ) is a key parameter in capacitive power equipment insulation on-line monitoring , which can reflect the insulation station of the capacitive equipments such as Bush and CT .

介绍用电流平衡法带电测试耦合电容器的电容量Cx和介质损耗tanδx的原理、方法、注意事项及结果。

The present paper introduces principle , method and result of " current balance method ", which is used to measure capacitance Cx and dielectric loss tan δ of coupling capacitor under the operating voltage .

当CeO2添加量达4%（质量分数）时样品的介质损耗因子最低（≈0.2%）。

With the addition of 4 % ( mass factor ) CeO_2 , the dissipation factor of the sample shows the lowest value ( about 0.2 % ) .

研究了容性设备的绝缘性能与其介质损耗之间存在的关系，通过测量其介损因数tanδ等电气参数便能实时监控容性设备的绝缘状态。

Studied the relationship between insulating properties of capacitive device and its dielectric loss , by measuring the dielectric loss factor and other electrical parameters of the device will be able to monitoring capacitive insulating state .

本文首先介绍了介质损耗测试的原理并对现有的介质损耗测量技术进行了分析对比，以谐波分析法作为基于SOPC技术的设计方案的理论基础。

The design of dielectric loss test system based on SOPC is carried out in the paper , according to the analysis of existing systems and the development and application of SOPC .