基于GPRS的变压器直流偏磁电流在线监测系统研究  

Study on Online Monitoring System for DC Biasing of Transformer Based on GPRS

作　　者：张英[1] 饶章权[1] 

机构地区：[1]广东电网公司电力科学研究院,广东广州510080

出　　处：《广东电力》2010年第8期54-56,94,共4页Guangdong Electric Power

摘　　要：地磁感应电流、直流输电系统接地极电流侵入电网,对电网内变压器造成直流偏磁危害,影响变压器安全、稳定运行。针对该问题,设计了一种基于通用无线分组业务(general packet radio service,GPRS)网络的变压器直流偏磁电流在线监测系统,并研制了专门用于变压器直流偏磁电流监测的装置。该设计在电气上完全切断了过电压及各种干扰的传播路径,能有效保证监测装置工作的稳定性、可靠性。The flow of geomagnetically induced current（GIC） and HVDC ground electrode current into power grid will cause DC biasing harm to transformers in the grid and impact their safe and stable operation.Accordingly,an online system for monitoring the DC biasing of transformer has been designed based on general packet radio service（GPRS） network,and a special device for the said purpose developed.Because the transmission of overvoltage and other disturbances in circuit are shut off completely,the monitoring device can work steadily and reliably.

关 键 词：变压器 直流偏磁电流 监测系统 通用无线分组业务 

分 类 号：TM411[电气工程—电器]