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- differential protection valve 见anti-compounding valve
- 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。
- 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。
- 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。
- 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。
- 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]
- As a standard NIBCO bronze fire protection valves are made to be "Dezincification Resistant," which is a seal of quality and longevity. 作为一种基本要求，美国尼伯科青铜消防阀门都具有“抗失锌”特性，质量更加优异，使用寿命更加长。
- As a standard NIBCO bronze fire protection valves are made to be “Dezincification Resistant,” which is a seal of quality and longevity. 作为一种基本要求，美国尼伯科青铜消防阀门都具有“抗失锌”特性，质量更加优异，使用寿命更加长。
- 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。
- ZHOU Yun-bo,CAO Liang.Inspection and Analysis of a Maloperation of Transformer Differential Protection and Its Preventive Measures.Power Systems Technology,2001,25(12):71-74. [7]周云波;曹良.;一起主变压器差动保护误动事故及防止对策
- The new approach,which checks differential protection connection using electromotor starting current,is simple and reliable,and easy to be coordinated with installation schedule. 而利用电动机启动电流检验差动保护接线的新方法,简便可靠,容易与现场安装施工进度相协调。
- The principle and installation of differential protection and directional over-current protection which applied to ringlike type power network is presented. 概述了国内外高性能防腐涂料主要品种的开发和应用情况,并提出了高性能防腐涂料的发展方向。
