1) shaft-current prevention
轴电流保护
1.
According to the configuration of bearings of the Langyashan Pumped Storage Power Station,the principle of shaft-current prevention devices is analyzed,and some possible shaft-current origins are pointed out,which are helpful to position the faults.
简要介绍了轴电流形成的原理和对机组产生的危害,提出了防范措施,并结合琅琊山抽水蓄能电站机组各部轴承的结构特点,分析了其轴电流保护装置原理,以及产生轴电流的几种可能情况,为查找故障点指明了方向。
2.
According to the configuration of the shaft-current prevention devices in Longtan Hydropower Plant,the design principle and the application of the shaft-current prevention are described.
结合龙滩水电站轴电流保护的配置情况,阐述了其轴电流保护的设计及应用。
2) current protection
电流保护
1.
The Development of Current Protection Controller in 10kV Lines;
10kV配电线路电流保护控制器的研制
2.
Study on application of Morlet complex wavelet on adaptive current protection
Morlet复小波算法在自适应电流保护中的应用研究
3.
Research on adaptive changes of current protection setting values of multi-branch capacitor
多分组电容器电流保护整定值自适应变化研究
3) protection current
保护电流
4) generator axial current protection apparatus
发电机轴电流继电保护装置
1.
This paper mainly introduces the working principle of this apparatus, operating instruction ,the solution to usual malfunction and the monitoring function of the romate operation of the BZL-10B generator axial current protection apparatus.
主要对BZL-10B型发电机轴电流继电保护装置的工作原理、操作说明、常见故障的处理方法及上位机监测功能进行了简单的介绍。
5) over-current protection
过电流保护
1.
Study of chain-type over-current protection for cascaded lines;
级联线路的链式过电流保护方案研究
2.
The problems in calculation of time cut-out over-current protection value for various stages of power system in San Steel Group Company is stated,the reason for not be able to select in that protection is analyzed with power network for 4# converter of Steelworks as example,some measures proposed.
阐述了三钢集团公司内部电力系统各级定时限过电流保护定值计算中存在的问题,以炼钢厂4#转炉供电系统为例分析了定时限过电流保护无法实现选择性的原因,提出了解决问题的对策。
3.
The article introduces demands for sensitivity of the over-current protection in power network and also deals with the measurements to improve the sensitivity.
主要介绍对供电系统中过电流保护装置灵敏度的要求,以及提高过电流保护装置灵敏度的措施。
6) overcurrent protection
过电流保护
1.
The development of the compositive experimental flat for the line overcurrent protection;
线路过电流保护综合实验平台的开发
2.
The paper introduces the rectifying principle of transformer s overcurrent protection and then expatiates compound voltage lockout overcurrent protection.
介绍了变压器过电流保护的整定原则,借以引出了复合电压闭锁过流保护,并对其工作原理和在实际中的应用进行了分析。
3.
A new type of overcurrent protection,phase-sensitive overcurrent protection based on sampled value of current,is suggested in this paper.
针对中低压电网中过流保护存在灵敏度低的缺点,提出了一种新型微机式过电流保护即基于电流采样值的相敏过电流保护,并分析了它的基本原理、具体的实现方法及可靠性问题。
补充资料：水轮发电机轴电流
水轮发电机轴电流
shaft's current of hydro-generator
shUI}un fadlonll zhoud{anl旧水轮发电机轴电流(shaft‘5 eurrent of hy-drogenerator)流过发电机轴颈与轴瓦之间的电流。发电机在运行过程中，磁场回路的不均衡性，在发电机轴和轴瓦回路产生轴电压，从而出现轴电流。水轮发电机轴电压的数值较小，仅有几伏。但是一旦轴瓦支撑对地绝缘受到破坏，轴与轴瓦之间，就形成较大的电流回路，产生电火花，使轴表面与轴瓦烧损。中国丰满水电站在20世纪50年代曾发生过此类事故。为了防止轴表面与轴瓦免受轴电流烧损，在推力轴承底座加上绝缘垫，或在轴瓦背面加上绝缘，以及所有与轴瓦有关连的温度计都予以绝缘处理，使在这些回路中形成较高的绝缘电阻，就能限制轴电流使其不危害设备.中国的水轮发电机轴绝缘电阻在运行中一般规定最低为0.3 Mn。国外，有的还在加强绝缘基础上，装设轴电流保护装置，一旦电流增大，就发出信号使机组停机。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条