It is essential to distinguish excitation inrush from fault current in transformer differential protection.
变压器差动保护的关键问题是判别变压器差动电流是励磁涌流还是故障电流。
In this paper, a new method of identifying magnetizing inrush currents based on features of flux locus is presented.
本文提出了一种基于磁通轨迹特征的变压器励磁涌流识别方法。
It widens the applied scope of grey system clustering evaluation and provides a new scientific method for forecasting water inrush in the coal mine.
该方法在煤矿突水中的应用进一步拓宽了灰色聚类理论的应用范围，并为煤矿突水的准确预报提供了一种新的方法。
Research results are not only used for the controlling of water inrush in Jijiapo Tunnel, but also have strong reference value for avoiding and controlling similar disasters.
研究成果不仅成功应用于季家坡隧道突水灾害处治，对于避免类似突水事故的发生和灾害防治亦有较强的借鉴意义。
Coal mining and other mining enterprises of various categories must update hydrological and geological data about their mine shafts to guard against water inrush or inundation.
要求煤矿和其它各类矿山企业，都要健全矿井水文地质资料，严防发生透水、淹井事故。
At present, there are some methods of identifying inrush current.
目前已有多种识别励磁涌流的方法。
The water - inrush possibility during mining depth coal layer is assessed.
评价了肥城煤田深部开采底板突水的可能性。
Using grouting to stop water inrush recovers normal natural ventilation system.
通过采取注浆堵水措施，恢复了正常自然通风系统。
This paper proposes a novel method of suppressing the inrush current of transformers.
提出了抑制变压器冲击电流的新方法。
The new principles and means of distinguishing inrush in the past few years are summarized.
总结了近年来出现的实现变压器保护的新原理和新的识别方法。
The merits and demerits of the distinguishing inrush using voltage and current are researched.
分析了综合利用电压和电流量的励磁涌流识别判据的优缺点。
In chapter six, two novel methods of distinguishing magnetizing inrush current have been studied.
第六章研究了两种鉴别变压器励磁涌流的新方法。
The water-inrush from floor inundates Working face 51101W in Liangzhuang coal mine, Xinwen Mining Group.
新汶矿业集团良庄煤矿51101W工作面因底板突水导致工作面被淹。
The system has realized not only inquiring for water resource of inrush, but also spatial classification.
该系统不但实现了突水水源的点查询，还实现了突水空间分区。
The mechanism of water inrush from coal floor in longwall face is simulated by the similar material tests.
利用相似材料模拟试验，模拟了采场底板突水机理。
The water-inrush of karst tunnel affects the stability of adjacent rock and the safety of tunnel seriously.
岩溶隧道涌水严重影响隧道围岩的稳定，威胁隧道的安全。
This paper introduces the design of a Coriolis mass flowmeter for the on-line monitoring of water inrush in mine.
介绍了一种实时在线矿井突水监测科氏力质量流量计的设计。
The results showed that RBF NN can distinguish magnetizing inrush currents from internal fault currents correctly.
结果表明：RBF神经网络可以正确地区分励磁涌流和短路电流。
This paper studied the mechanism of water-inrush and water-inrush prediction of 19th coalbed floor on Panxi coalmine.
本文对潘西煤矿19煤底板突水机理及预测预报进行了研究。
It has an important significance to correctly identify mine water quality types in order to judge water inrush sources.
正确识别矿井水质类型对于判断突水水源具有重要的意义。
Unreasonable selection of dead time can make inverting components to produce higher inrush voltage and current and even damaged.
死区时间选择的不合理会使逆变器件产生过高的浪涌电压和电流甚至损坏。
So far, the core problem of transformer differential protection is still how to precisely identify the magnetizing inrush current.
迄今，变压器差动保护的核心问题仍然是如何准确识别励磁涌流。
A new algorithm by use of quadratic polynomial is proposed to reconstruct inrush, and the corresponding sampling rate is determined.
提出了用二次多项式重构励磁涌流的新算法，并确定了相应的采样率。
It is found that the two parameters aren't influenced by external fault and magnetizing inrush current, which ensures good selectivity.
理论上分析可以得到，这两个参数不受外部故障和励磁涌流的影响，因此具有很好的选择性。
The scheme gets rid of the influence of excitation inrush current and avoids the difficulty to get internal parameters of transformers.
该保护方案摆脱了励磁涌流的影响，并且避开了变压器难以得到的内部参数。
According to the model, applying the cusp catastrophic theory the mechanics mechanism of water inrush is analyzed from key stratum of floor.
根据这一模型，应用尖点突变原理分析了承压水底板关键层失稳突水的力学机制。
After an external fault of transformer is cleared, the transient flux may enter into the saturation region, and a recovery inrush may be produced.
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。
Based on grille fractal and self-adaptive morphological filter, a novel approach to identify inrush current and internal fault current is presented.
提出了一种基于网格分形和自适应形态滤波器识别励磁涌流与内部故障电流的新方法。
Abstract: in the process of coal mining, fissure water and gas enrichment, storage, transport, water-inrush from coal floor and gas outburst is induced.
摘要：在煤矿开采过程中，裂隙是水及瓦斯富集、存储、运移的场所，是诱发煤层底板突水和瓦斯突出的重要因素。
For a long time, the safe mining of our country's coal resources has been seriously affected by a primary factor which is water inrush from coal seam floor.
长期以来，煤层底板突水一直是严重影响我国煤矿资源安全开采的一个主要因素。
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