继电保护和自动装置的抗干扰问题  

Anti-interference of relay protection and automatic devices

作　　者：田方[1] 

机构地区：[1]中国水电顾问集团西北勘测设计研究院,西安710065

出　　处：《西北水电》2008年第5期46-50,共5页Northwest Hydropower

摘　　要：随着电力系统技术飞速发展,发电机容量大幅度提高,输电线电压升高,其电磁场强度和它产生的干扰大大增强。对于无触点的机电保护装置,以及现在已广泛应用的微机装置,这种干扰将会产生很大影响。通过对不同形态干扰的讨论,提出相应的抗干扰措施,总结出在电站设计中可采用的办法。实践证明,只要措施得当,发电厂、变电所的继电保护和自动装置干扰问题是完全可得到解决的。With rapid development of power system technology, the capacity of generators is increased greatly, and the voltage of transmission lines rises, the electromagnetic field strength and resulting interference is much increased, which will have great influence on non-contact relay protection devices and widely-applied minicomputers. Through discussion on different pattern of interference, corresponding anti - interference measures are proposed and methods applicable in design are summarized. The practice proves that the interference to relay protection and automatic devices can be completely solved in power plant and substation by appropriate measures.

关 键 词：电磁场 屏蔽 电磁耦合 静电耦合 公共电路耦合 电磁兼容性 继电保护 

分 类 号：TM77[电气工程—电力系统及自动化]