非电量直跳保护分析与改进  

Analysis and improvement of direct tripping type non-electricity protection

作　　者：赵斌 牟瑛琦 桑建斌[1,2] 柏松 丁俊健 ZHAO Bin;MU Yingqi;SANG Jianbin;BAI Song;DING Junjian(Guodian Nanjing Automation Co.,Ltd.,Nanjing 211800,China;Nanjing SAC Valmet Automation Co.,Ltd.,Nanjing 211800,China)

机构地区：[1]国电南京自动化股份有限公司,江苏南京211800 [2]南京国电南自维美德自动化有限公司,江苏南京211800

出　　处：《电气应用》2024年第12期70-74,共5页Electrotechnical Application

摘　　要：非电量保护对于电力系统稳定运行有着重要意义。以气体保护为例,介绍了气体继电器、直跳回路、开入采集回路等设备回路的工作原理。在此基础上,针对一起地震引起的非电量保护动作案例,根据现场的动作记录,结合非电量直跳保护的规范要求,从气体继电器、直跳回路、出口继电器和开入采集四个方面进行分析,得到了一些改进措施,包括提高主变压器及气体继电器抗震性,从动作功率、动作延时及动作电压提高直跳回路的可靠性,加快开入采集的识别速度等,有利于增强保护装置的信息记录能力,提高非电量直跳保护的可靠性。Non-electricity protection is of great significance for the stable operation of power systems.taking gas protection as an example,the working principles of equipment circuits such as gas relays,direct tripping circuits,and input acquisition circuits are introduced.On this basis,in response to a non-electricity protection accident caused by an earthquake,according to on-site records and industry standards for direct tripping non-electricity protection,some improvement measures were analyzed from three aspects:gas relay,direct tripping circuit,and input acquisition.These measures include improving the seismic resistance of the main transformer and gas relay,improving the reliability of the direct tripping circuit in terms of action power,action delay,and action voltage,accelerating the recognition speed of input acquisition.These improvements are beneficial for enhancing the information recording ability of the protection device and improving the reliability of non-electrical direct tripping protection.

关 键 词：非电量保护 直跳回路 气体继电器 开入采集 

分 类 号：TM77[电气工程—电力系统及自动化]