油中局部放电,partial discharge in oil
1)partial discharge in oil油中局部放电
英文短句/例句
1.Analysis of Oil Flow Electrification Phenomenon in Partial Discharge of Transformer Oil变压器油中局部放电下的油流带电分析
2.Method for PD Location in Oil Combining Ultrasonic Phased Array With Wideband Array Signal Processing超声相控阵与宽带阵列信号处理相结合的油中局部放电定位方法
3.Partial Discharge Measuring Based on Change of the Charge Density in Oil;基于油中电荷密度变化的局部放电测量
4.Measurement and Simulation of Partial Discharge in Disc-void of Oil-pressboard Insulation With Electrical Degradation Process油纸绝缘内部气隙缺陷电劣化过程中局部放电的测量与模拟
5.EXPERIMENTAL STUDY ON THE PARTIAL DISCHARGE PHENOMENA ON OIL/PAPER INSULATION SYSTEM UNDER X-RAY IRRADIATION;X射线激励下油/纸绝缘系统中局部放电现象的实验研究
6.The Research of the Relationship between the Analysis of the Dissolved Gas in Oil of Transformer and the Monitoring Technology of PD;变压器油中溶解气体分析与局部放电监测技术关系的研究
7.Research of Characteristics of Partial Discharge of Typical Defects and Relationship between Partial Discharge and Dissolved Gases in Oil of Transformer变压器典型缺陷局部放电特性及与油中溶解气体对应关系研究
8.Characteristics of PD EM-wave Modes in GISGIS中局部放电电磁波的模式特性
9.Relationship Between UHF Signal Energy and Charge Quantity of Partial Discharge in Transformer Oil变压器油中局放UHF信号能量与放电量的关系
10.Application of gradient shrink method in location of transformer partial discharge梯度收缩法在局部放电定位中的应用
11.Application of the Weibull Distribution to Recognition of GIS PD PhenomenaWeibull分布在GIS局部放电识别中的应用
12.Ultrasonic Detection of Partial Discharge on Typical Defects in GISGIS中典型缺陷局部放电的超声波检测
13.partial discharge inception voltage test局部放电起始电压试验
14.Partial Discharge Measurement and Analysis of Gap in Oil-Paper Insulation Model under Lightning Impulse Voltage雷电冲击电压下油纸绝缘气隙模型的局部放电测量与分析
15.The Research of Digital Anti-Interference in Generator Partial Discharge Monitoring;发电机局部放电监测中数字抗干扰的研究
16.Pulse Quantitative Determination in Partial Discharge Detection Using Wide Bandwidth Pulse Current Method宽带脉冲电流法局部放电检测中的脉冲定量
17.Study on Partial Discharge Online Monitoring System Mounted at Neutral Point for Electric Generators发电机中性点局部放电在线监测系统研究
18.Statistical characteristics analysis of partial discharge in high-voltage cable joint高压电缆中间接头局部放电统计特性分析
相关短句/例句
Partial discharge局部放电
1.Typical model design of partial discharge in transformer;变压器局部放电典型模型设计
2.Identification and countermeasures for interference source at site of partial discharge test;现场局部放电试验中干扰源的识别和采取的对策
3.Research on the on-line monitoring system for partial discharge of hydro-generators;水轮发电机局部放电在线监测系统研究
3)PD局部放电
1.Preliminary Study on Signal Extraction Technology forPD Pulse Based on Independent Component Analysis;局部放电脉冲信号ICA提取技术的初步研究
2.Study of bubble development in transformer oils based onPD measurement in negative point-plane gaps;基于负极性下局部放电测量的变压器油中气泡发展过程实验研究
3.ThePD Detection of GIS in Service Using UHF-Acoustic Method;运行中GIS局部放电超高频-超声波的联合检测
4)partial discharge(PD)局部放电
1.This paper introduced the work principle of Ultrasonic to measure partial discharge(PD)in transformers,and the composition of positioning system.阐述了超声波测量变压器局部放电的机理及定位系统的组成、局放超声波信号的频谱分析、定位算法的实现,最后指出超声定位的注意事项及局限性。
2.The key techniques about the sensing,data acquisition and processing,pattern recognition and calibration of ultra-high-frequency (UHF) signals are illuminated and the present status of field applications of on-line UHF partial discharge(PD) detection method is summarized in this paper.从传感器、超高频信号的采集处理、信号的模式识别及超高频信号的标定等几个关键技术出发,对超高频法在电力设备局部放电在线检测中的应用现状进行了综述,并对超高频法在实际应用中存在的问题进行了探讨。
3.It is difficult to measure the partial discharge(PD) signals because the signals may be submerged or flooded when the surrounding noises are severe.局部放电极易被噪声污染,众多干扰中载波通讯、高频保护、无线电广播等周期干扰尤其严重,而窄带干扰严重时可能完全淹没局部放电信号,这给局部放电的检测工作带来了巨大困难。
5)partial discharge (PD)局部放电
1.Obtaining the partial discharge (PD) characteristic is one of the key issues of PD ultra-high frequency (UHF) detection.获取局部放电(PD)特征信息是局部放电特高频(UHF)检测的关键问题之一,研究UHF信号与PD脉冲电流之间的关系有助于绝缘缺陷的诊断。
2.The selections of center frequency and bandwidth are very important to detection, calibration and pattern recognition of ultra-high-frequency (UHF) partial discharge (PD) signals in transformers.变压器局部放电特高频检测中,检测频率和带宽的选取对于放电信号的提取,进而对放电的标定及局部放电模式识别特征的保留具有决定作用。
3.A new-type external antenna of ultra high frequency (UHF) partial discharge (PD) detection system is designed according to the wave-guide structure of gas-insulated metal-enclosed switch gear (GIS) and the wide band frequency spectral features of PD excited by electromagnetic waves.根据气体绝缘的金属封闭式组合电器(GIS)的波导结构及局部放电脉冲所激发的电磁波的宽频带特征,建立了外部天线超高频局部放电检测系统。
6)partial discharges局部放电
1.Location ofpartial discharges fault in transformer winding;变压器绕组局部放电故障的定位
2.A system based on Fabry-Perot(FP) acoustic sensor is designed for on-line detection of ultrasonic signals generated bypartial discharges in transformer oil.为在线测量变压器油中局部放电产生的超声波,建立了非本征型光纤法珀(FP)传感系统,传感器的传感单元FP腔由石英膜和尾纤端面组成,声波作用于石英膜上产生振动调制入射光波,通过解调含有局放信息的输出信号,可对变压器运行状态进行在线检测。
3.The significance of on line monitoringpartial discharges(PD) of electric apparatus insulation and diagnosing condition of electrical apparatus based on “finger print”(3 D φ q n pattern) are demonstrated .阐述了在线监测电力设备绝缘局部放电以及放电指纹对诊断电力设备绝缘状态的重要意义。
延伸阅读
局部放电局部放电partialdischarge电力设备绝缘在足够强的电场作用下局部范围内发生的放电。这种放电以仅造成导体间的绝缘局部短（路桥）接而不形成导电通道为限。每一次局部放电对绝缘介质都会有一些影响，轻微的局部放电对电力设备绝缘的影响较小，绝缘强度的下降较慢；而强烈的局部放电，则会使绝缘强度很快下降。这是使高压电力设备绝缘损坏的一个重要因素。因此，设计高压电力设备绝缘时，要考虑在长期工作电压的作用下，不允许绝缘结构内发生较强烈的局部放电。对运行中的设备要加强监测，当局部放电超过一定程度时，应将设备退出运行，进行检修或更换。
