Two core issues caused transformer differential protection to mal-operate are studied in the paper.
本文针对变压器差动保护导致误动的两大核心问题展开了研究。
Distinguishing the transferring fault is one of difficulties for transformer differential protection.
转换性故障的准确识别是变压器差动保护亟待解决的难题之一。
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。
It is suggested that special over-excitation restraint function in the transformer differential protection is not necessary.
论文根据数字保护的智能特点提出用多条件涌流制动判据来判别变压器的涌流状态新方法。
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。
The experiment of relay protection is significant for students to learn and master the principle of transformer differential protection.
继电保护实验对学生理解和掌握变压器差动保护的原理十分重要。
Dead Angle of differential currents is to be measured when realizing the transformer differential protection based on the dead Angle principle.
在间断角原理变压器差动保护中，需要测量差动电流导数波形的间断角。
This paper introduces theoretical basis and method of measuring transformer differential protection phase by transformer differential circulating current method.
介绍了用差压环流法测量变压器差动保护相位的理论依据及方法。
The setting calculation of BCH series transformer differential protection has some features such as minimum marginal condition, easily programming and standardized.
变压器bch系列差动保护整定计算，边界条件最少，易于程序化、标准化。
Digital transformer differential protection may falsely take effective when external single-phase earth fault occurs at star side or the line endures lightning strike on single phase.
数字式变压器差动保护在星形侧发生外部单相接地或线路单相遭雷击的情况下，差动保护有时会误动。
It is the existent of magnetizing inrush current in transformer that differs transformer differential protection from differential protection of other main equipments and transmission lines.
由于变压器励磁涌流的存在，使得变压器差动保护有别于其他主设备及线路的差动保护。
In this paper the recursive least square algorithm is described and a practical recursive algorithm is used in differential protection of transformer.
本文在分析递推最小二乘算法的基础上，给出了在微机变压器差动保护中采用的实用递推算法。
In the last period, we analyse the calculating Settings of differential protection for main protection of transformer.
在论文的后一阶段，对变压器主保护的整定原则进行了分析研究，并给出了具体的算例。
In practical running, the differential protection of transformer may happen to be tripped in non fault.
实际运行中，变压器差动保护可能在非故障的情况下发生误动。
Basing on a more precise model of transformer the author of this dissertation has done some researches on the machinery of the incorrect operation of differential protection for transformer.
本文作者在变压器精确模型的建立及其应用于变压器差动保护不正确动作机理分析做了一定的探讨研究。
Furthermore, the digital simulation results and dynamic simulation data indicate that transformer recovery inrush itself cannot result in mal-operation of differential protection.
在此基础上，以数字仿真和动模录波数据分析说明恢复性涌流本身不会造成变压器差动保护误动。
Inrush identification is always a key problem in power transformer current differential protection.
励磁涌流识别一直是电力变压器差动保护中比较关注的问题。
Based on the analysis of the differential protection of the double winding transformer, the paper presents a simplified ratio restraint algorithms for the three phase, three winding transformer.
在分析双绕组变压器的差动保护算法的基础上，提出了适用于三相三绕组变压器的比率制动式算法，并对判据进行了简化。
The transformation ratio of the original current transformer (CT) on the transformer HV side was so large that a parameter for the differential protection software exceeded its settable scope.
因变压器高压侧的电流互感器选择变比过大，以致超出差动保护软件的参数设置的范围。
The zero-sequence differential protection ought to be added at the star winding of extra-high voltage transformer.
接线绕组的超高压变压器应增设零序差动保护。
A zero-sequence differential protection for transformer is discussed in scheme design and protective logic.
从保护方案设计和保护逻辑两方面详细论述了一种新型的变压器零序差动保护方案。
However, current transformer (ct) saturation is still affecting the reliability of transmission line differential protection.
然而电流互感器(CT)饱和会影响输电线路电流差动保护的可靠动作。
A new countermeasure to current transformer (TA) saturation, namely, current polarity comparison method, for differential current protection of transmission line is proposed.
提出了一种适用于输电线路差动保护抗电流互感器(TA)饱和的新方法——电流极性比较法。
Protection devices is equipped with zero-sequence differential protection for the auto-transformer.
而保护装置针对自耦变压器，还配置了零序差动保护。
On the basis of power differential method, a novel principle of transformer protection using generalized instantaneous power is presented.
在差有功法的基础上，提出一种利用广义瞬时功率实现变压器保护的新原理。
The TA saturation has always been the main problem to degrade the reliability of the differential protection of power transformer.
TA饱和一直是影响变压器差动保护可靠性的重要原因。
The electric secondary AC circuit detection method can check secondary circuits such as the transformer and the bus differential protection of a transformer substation.
本发明可实现对变电站的变压器、母差保护等二次回路的检验。
Differential relay is the key protection for power transformer.
差动保护是变压器的主保护。
Differential relay is the key protection for power transformer.
差动保护是变压器的主保护。
应用推荐