通过对实际故障变压器油中溶解气体的分析研究，提出了用“无编码比值法”分析和判断变压器故障性质的诊断方法。
Through the analysis and research for the dissolved gas in transformer oil, the "non-code ratio method" is given to analyse and judge transformer fault.
据报道，火灾发生缘于对一号反应堆变压器的故障。
It was reported that the fire was caused by a malfunction on an electricity transformer at the No.1 reactor.
一个变压器的故障就可能带来整个电网系统的崩溃。
One malfunctioning transformer can bring down the whole system.
介绍了配电变压器低压保护的组成，对故障原因进行了分析，提出了提高低压保护可靠性的具体措施。
Introduces the constitutes of low voltage protection system of distributing transformer, analyzes the failure reason, puts forward concrete measures of improving low voltage protective reliability.
电力变压器故障诊断对电力系统的安全经济运行有着十分重要的意义。
The transformer fault diagnosis is very important to the safety and economic operation of power system.
本文分析了原有的DGA故障诊断方法，包括三比值法、人工神经网络法、模糊理论、变压器诊断专家系统、灰色关联算法等。
The article analyses original methods of DGA fault diagnose, include three-ratio method, artificial neural network method, Fuzzy Theory, diagnosing expert system, grey relational algorithm, et.
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.
本文只统计造成变压器必须退出运行的故障，研究这类失效应把变压器看成是不可修复系统，其最主要的指标是失效率。
In the thesis we only count the failure that leads the transformer to quit operation, regarding the transformer as Non-repairable system whose main index is failure rate.
为更及时准确地发现变压器故障，缩短检测周期，逐步实现变压器的状态检修，变压器油色谱的在线监测应用而生，并逐步得到推广应用。
In order to detect faults timely, decrease the testing period and reach the status maintenance, on-line monitoring of transformer oil chromatogram has been developed and spread gradually.
本文只统计造成变压器必须退出运行的故障，研究这类失效应把变压器看成是不可修复系统，其最主要的指标是失效率。
The thesis only counts the failure that leads the transformer to quit operation, regarding the transformer as Non-repairable system whose main index is failure rate.
基于模糊逻辑理论和人工神经元网络，提出了将模糊神经网络应用于变压器故障诊断的方法。
Based on fuzzy logic theory and artificial neural networks, the method of the transformer fault diagnosis with fuzzy neural networks is presented.
利用COM和模糊技术开发了电力变压器故障模糊检测和辨别模块，在此基础上设计了模糊诊断系统。
The modules for power transformer fault detection and identification are developed with COM and fuzzy technology. Based on the modules, the fuzzy diagnostic system is design.
基于所建立的数学模型，采用拓扑描述串和故障等效处理技术来计算新型换流变压器的各种故障。
Based on the mathematical model, we adopted topological description series and the technique of fault equivalence disposal to calculate all kinds of faults of the new converter transformer.
提出并研究了电力变压器故障诊断的人工神经网络方法。
A neural network approach to power transformer fault diagnosis is proposed in this paper.
并介绍了变压器故障的原因和处理过程。
The fault reason and treatment process of transformer are introduced in this paper.
介绍了基于油中溶解气体分析（DGA）的电力变压器故障综合诊断。
The synthetic diagnosing of transformer faults based on dissolved gas-in-oil analysis (DGA) is introduced.
输配电线路故障、变压器投运、感应电动机启动是引起电压凹陷的主要原因。
Voltage sags due to line faults, transformer energizing and induction motor starting are main interference sources.
将其应用在变压器故障诊断中，取得较好的诊断效果。
The result of applying in transformer fault diagnoses is outstanding.
绕组是变压器发生故障较多的部件。
我们查出故障出在一个有毛病的变压器上。
变压器外部故障切除后，暂态磁通可能超过变压器铁心的饱和点，从而产生一定的恢复性涌流。
After an external fault of transformer is cleared, the transient flux may enter into the saturation region, and a recovery inrush may be produced.
故障排除和修复电动机，变压器，开关柜，发电机和其他机电设备。
Troubleshoot and repair electric motors, transformers, switchgear, generators and other electro-mechanical equipment.
结合平时的运行经验，对电气试验和气相色谱分析数据进行综合分析，可以比较准确地判断变压器故障类型和故障部位。
Together with the operation experience, the type and position of transformers fault can be determined correctly through comprehensive analysis on the data of electrical test and gas chromatography.
随后利用电路理论对这种变压器的各种相间短路故障进行了分析，得到了各种故障情况下变压器高低压侧各相电流间的关系。
The relations between the currents of all phases and at both sides are drawn out by applying circuit theories and analyzing different inter phase short circuit faults of this kind transformer.
电力变压器故障的机理难以应用准确的数学模型加以描述，故障现象与故障原因之间存在着很多不确定因素。
It is difficult to use a precise mathematical model to describe the fault mechanism of transformers. There are many uncertain factors between the phenomena and causes of the faults.
提出了一种模糊距优距离的变压器故障气体分析诊断算法，给出了该算法的推理、计算及仿真结果。
The algorithm of faults diagnosis for transformer based on fuzzy optimum distance is discussed. The inference, calculation and simulation of algorithm is given.
变压器的具体故障种类和故障处，完全可以在变压器停运后检查到。
The fault type and fault point can be inspected after the transformer is off line.
变压器内部短路故障发生的原因主要是变压器内部的绝缘失效。
Transformers do suffer from the internal short-circuit faults mainly due to internal insulation failure.
通过测量变压器的短路电抗并计算分析，可以判断变压器的绕组故障。
Winding faults can be identified by measuring transformer short-circuit reactance and analyzing the data.
新型换流变压器建模和故障计算是新型换流变压器运行特性研究及继电保护、故障诊断的基础。
Modeling and faults calculation in the new converter transformer are the bases of research on operating characteristics, relay protection and fault diagnosis of the new converter transformer.
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