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Which cause the maloperation of current differential protection. 谐波含量高，造成电流波形畸变，并最终导致了变压器差动保护的误动。
Job elements in vertical differential protect of electric transformer and protect bound in course of electric transformer are introduced. 介绍了电力变压器纵联差动保护的工作原理和变压器在运行中保护装置的保护范围。
It presents several principles of differential protection for generators. 介绍了各种微机发电机差动保护的原理。
Longitudinal differential protection of optical fiber,which is of many merits, has beenused more and more widely in EHV transmission line protection. 光纤纵联差动保护具有许多突出的优点,因而越来越多地用于超高压线路。
As for differential protection based on full current sampling, optical current transducer (OCT) possesses unmatchable advantages. 在基于全电流的采样值差动保护中，光学电流互感器具有无可比拟的优点。
The wiringcorrectness of differential protection current loop can be verified using phasor analyzingmethod and on-load testing method. 差动保护电流回路接线是否正确，可通过相量分析法和带负荷检验法进行判断。
Different from traditional protections using balance winding,the digital transformer differential protection uses balance coefficients. 数字式变压器差动保护用平衡系数代替了传统保护的平衡线圈。
The differential protection is locked when switching the current and voltage, and the misoperation of differential protection is reduced. 在电流、电压回路切换时自动闭锁差动保护，减少了保护误动的机率。
Current transformer saturation has always been one of the major problems of degraded reliability of the transformer differential protection. 电流互感器饱和是影响变压器差动保护可靠性的重要因素之一。
Inrush current is about with the theory of differential protection ,but research exotericas of it is used difficulty in fact. 励磁涌流涉及到差动保护的原理问题,是当前研究地热点之一,但多停留在理论层面。
The protection must be disabled before switch and be enabled after switch and it is easy to cause the differential protection misoperation. 在进行电流、电压回路切换时必须先退保护,切换完毕后再投入保护,操作步骤烦琐,容易造成差动保护的误动。
They netted the fruit trees to protect them from birds. 他们用网覆盖住果树以使其免遭鸟害。
The current transmission error of CT saturation is one of the main factors of current differential protection maloperation. 电流差动保护中区外故障时电流互感器饱和而造成的电流传变误差,是引起电流差动保护误动的一个重要因素。
This paper proposes differential protective criterions used superimposed current components available for T-connection transmission lines. 本文提出了基于电流故障分量的T接线路差动保护判据。
LI De-jia.Analysis and countermeasure of maloperation of the microprocessor based transformer differential protection[J].Relay,2004,32(5):56-59. [2]李德佳.;微机型变压器差动保护误动原因分析与对策[J]
J.Pihler.Design of a Digital Differential Protection for Power Transformer[M].M.Sc. thesis in Slovene, Faculty of Technical Sciences Maribor, February 1991. 李永庄;林集明;曾昭华译.;电力系统电磁暂态计算理论[M]
How can we protect our computer files? 我们怎样才能保护我们的计算机数据？
She was engaged in protecting wild birds. 她致力於保护野生鸟类的工作。
The author gives a detailed analysis to the misoperation causes of transformer differential protection,especially the misconnection of the involved CT secondary. 对变压器差动保护不正确动作的原因进行了详细的分析及归纳。
These results about the influence on the precision of differential protection are usely to reduce the misoperation of power transformer and the expense of power department. 研究结果对提高变压器保护装置的精度,减少装置的误动,降低电力企业的损失具有一定的借鉴意义。