实验结果表明研制的这种光纤声波传感器测量变压器油中传播的声波信号具有比较高的灵敏度和较宽的带宽。
Test results indicate that the developed fiber optic acoustic sensors are capable of detecting the acoustic signals propagating in transformer oil with high sensitivity and wide bandwidth.
能源供应和信号传输需要滑环或接触传播的形式，如旋转变压器或遥测系统的使用。
The energy supply and signal transmission requires the use of slip-rings or contactless forms of transmission, such as rotary transformers or telemetry systems.
电力变压器发生故障的部位多，故障原因、现象复杂，在故障诊断中，可以通过变压器不同方面的特征信号从不同侧面来反映变压器的故障。
In the transformer fault diagnosis, the fault can be reflected by different characteristic signal from different side, due to complexity of fault reason and phenomenon of power transformer.
对晶闸管CO2焊接电源焊接过程主变压器一次侧产生的谐波信号进行采集分析，以此研究焊接电源对电网的影响。
This paper collects and analyzes the harmonic signals of the CO2 welding machines main transformer, by which researches the effect of welding power source on the main.
在比较励磁涌流和故障电流形成暂态信号各自特点的基础上，提出了一种变压器保护新方案。
Based on different characteristics of transient signals between the short circuit current and the inrush current, the transformer protection method is proposed.
这种新方法的基础是零序变压器在三相异步电动机断相时输出一个电压信号。
Use is made of that zero-sequence transformer outputs a voltage signal when phase-failure occurs in three-phase induction motor.
介绍ad698型线性位移差分变压器(LVDT)专用信号调理电路，应用ad698可简化电路的设计。
Signal conditioning circuit AD698 for Linear Variable Differential Transformer (LVDT) is introduced, and the application of this circuit can greatly simplify the circuit design.
介绍了采用虚拟仪器技术、组件化软件技术和数字信号处理技术的电力变压器综合检测系统。
The synthetic testing system for power transformers is introduced, in which the virtual in stru mentation technology, component software technology and digital signal process technology are used.
同时能将温度信号远传到控制中心，同步显示变压器油温。
Besides, it is able to send temperature signal to the remote control center to synchronously display the transformer oil temperature.
当前的变压器状态监测系统中，研究得较多的监测量是：油气量和局部放电信号。
As for the current system of monitoring the status of transformer, there are some more surveying values to research, such as the oil gas value and the signal of local discharge.
研究了转子位移无传感器检测的两种方法，即小信号注入测试法和差动变压器测试法。
Two methods, which are called as a small test-signal injection and the differential transformer, are studied in order to detect the rotor displacement without sensor.
在线测量变压器器身振动信号时，为保护后续仪器以及人身安全，设计了一套光电传输系统。
In order to protect the instrument and the experimentalist when the transformer tank vibration signal is on-line measured, a set of optical transmitting system is designed in this paper.
数字式输电线信号不可能穿过变压器。
Digital Power line signals cannot pass through a transformer.
数据通讯模块接收变压器信号监测装置发送到计算机上的电压、电流量。
Data communication module receives the magnitude of voltage and current which are sent to computer by the device of signal collection.
三极管的信号输出端亦可接到行输出变压器的初级。
The signal output end of the triode can also be connected to the primary of the horizontal output transformer.
运用粗糙集理论研究了因各种复杂因素造成的不完备信号模式下电力变压器故障诊断的方法。
The paper proposes new power transformer fault diagnosis approach to deal with the imperfect signals, caused by different cases.
本文采用UC 3846作为PWM发生器，桥式驱动的脉冲变压器既保证信号的传输，又保证足够功率驱动全桥逆变主电路。对于经常发生短路刷镀刷镀工艺，快速过电流保护非常必要。
UC3846 is used for PWM, pulse transformer driven by bridge can transfer signal and power for IGBT in main circuit, quick protection is necessary for short circuit often happen during brush plate.
利用变压器振动测试系统，对在变压器油箱表面测得的铁心及绕组的振动信号进行研究。
The vibration signals of core and winding measured from the transformer oil tank with vibration measurement system are investigated.
本文介绍了变压器铁心振动的起因，提出了一种不必空载运行变压器即可取得变压器铁心振动信号基频成分的方法。
In this paper, the principle of core vibration was described, and a method extracting cores vibration signal without operating transformer at no load condition was introduced.
大型电力变压器局部放电信号的特征提取是电气设备绝缘在线监测及故障诊断技术领域的前沿研究课题。
The feature extraction of partial discharge signal of transformer is the front research project in online monitoring and diagnosing high voltage insulation failure.
变压器的空载试验中，由于功率因数低，空载电流不是正弦信号，高精度测量其有功功率具有一定的难度。
In the no-load test of transformer, because of the low power factor and non-sinusoid current waveform, the high precision measurement is difficult.
文中提出了一种不空载运行变压器取得变压器铁心振动信号基频成分的负载电流法。
In this paper, a method extracting cores vibration signal with operating transformer at on-load condition was introduced.
市电频率Hum，主要原因包括灯丝线路走线导致的不平衡；供给灯丝的电源变压器（缺陷）导致电源杂波耦合进入信号通道，等等。
Line frequency hum, primarily induced by imbalance in the filament circuit wiring, the transformer used to power the filament, coupling into the signal leads, etc.
多极无刷旋转变压器采用乘法解调及信号合成得到适合开关磁阻电机驱动用的速度及位置信号。
The multiple brushless resolver uses multiplication demodulation and signal composition to achieve rate and position signals proper for driving switch reluctance motor.
这种材料适用于低功率信号传输变压器（如ADSL 变压器），可以降低变压器谐波失真，提高传输速率。
This material is suitable for low power signal transmission transformers (such as ADSL transformers), and can reduce harmonic distortion and improve transmission speed.
控制信号在一个家在一台特定变压器是存在所有出口在分享同一台变压器的另一个家。
Control signals in one home on a given transformer are present at any outlet in another home sharing the same transformer.
而对运行中的电力变压器的绝缘状态实施监测最有效的方法是实时提取使绝缘损坏的局部放电信号。
The most efficient method in monitoring the running transformer's insulated state is to extract partial discharge signals in real-time.
该传感器使用两组旋转变压器实现了电源及信号的非接触传递，并通过现场总线技术实现远距离测试监控。
The sensor uses two revolving transformers to transfer the electrical source and the signal without contacting. It also implements remote monitoring tests through the field bus technology.
该传感器使用两组旋转变压器实现了电源及信号的非接触传递，并通过现场总线技术实现远距离测试监控。
The sensor uses two revolving transformers to transfer the electrical source and the signal without contacting. It also implements remote monitoring tests through the field bus technology.
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