高压直流输电系统接地极在线监测  

On-line Monitoring System for HVDC System Earth Pole

作　　者：杨文宇[1] 刘健[1] 王建渊[1] 申明[1] 王晓帆[1] 李泽 李晓辉 

机构地区：[1]西安理工大学自动化与信息工程学院,西安710048 [2]北京国网联合电力有限公司,北京100080 [3]湖北超高压输变电公司,武汉430050

出　　处：《高电压技术》2006年第9期15-17,共3页High Voltage Engineering

基　　金：全国优秀博士学位论文作者专项基金资助(200137)

摘　　要：为满足实际电力企业生产需求,提出并实现了基于GSM与太阳能供电技术的高压直流输电换流站接地极在线监测系统。在接地极在线监测系统前台单元中实时检测换流站接地极的入地电流、观测井的水位和温度等数据,利用数字信号处理器预处理,借助GSM网络传输,通过后台系统管理软件监测换流站接地极的运行状态。该系统已投入三峡-常州直流输电500 kV龙泉换流站实际运行,效果良好,能反映该接地极运行状态的变化规律。For the satisfaction of the electric power enterprise production, the solution is proposed in this paper for the remote on-line monitoring system for HVDC system earth pole based on GSM network and solar energy power supply technology. In the on-site unit of the on-line monitoring system, the value of the current, temperature and water level of the observation well are obtained from different sensors. These data are preprocessed in a DSP chip and then transmitted by GSM wireless communication networks. The background unit receives and manages the onsite data. Based on software of system management, the operating condition of HVDC system earth pole can be diagnosed. This system is already successfully put into work on Longquan converting station of the 500kV HVDC transmission line from Sanxia to Changzhou, running stably and the variable rule can be impersonality reflected . The GSM and solar energy power supply technology is first used in on-line monitoring system for HVDC system earth pole, it will maybe reduce the load of the maintenance and supply a gap and has much value. This objectively make a further account that the GSM network and solar energy power supply technology will have a nice application future in on-line monitoring system for power system earth pole.

关 键 词：高压直流输电 接地极 在线监测 数字信号 预处理 全球移动通信 

分 类 号：TM835[电气工程—高电压与绝缘技术]