500kV电网过电压在线监测装置的设计与分析  

Design and Analysis of Overvoltage On-Line Monitoring Device for500kV Power Grid

作　　者：文艺[1] 李建明[2] 李淳[3] 

机构地区：[1]西华大学电气信息学院,成都610039 [2]四川电力科学研究院,成都610072 [3]四川雅安电力(集团)股份有限公司,四川雅安625000

出　　处：《电测与仪表》2013年第11期92-95,114,共5页Electrical Measurement & Instrumentation

摘　　要：为实现500kV超高压电网的安全经济运行,介绍一种变压器套管末屏的分压系统,从电容式套管末屏抽头处采集过电压信号的方法,分析了过电压在线监测装置各组成部分的原理和实现方法,给出了一种基于FPGA(现场可编程门阵列)的数据采集系统的硬件结构和软件流程图。实验表明该装置工作性能稳定,响应特性好,测量速度快、精度高,能够监测内外部过电压,满足了过电压监测的要求。To achieve safe and economic operation of 500kV extra-high voltage grid, a divider system at the tap of transformer bushing is introduced, where the overvoltage signal from the power grid is acquired. The structure of online overvoltage monitoring device and its operation principle are analyzed. Hardware structure and software design of a data collection system are given based on the field programmable gate array （FPGA）. Experiment results indicate that the device can not only achieve stable work performance and good response characteristics, but also realize accurate and swift measurement of overvoltage. Moreover, it can monitor internal and external overvoltage, and meet the expected requirement.

关 键 词：超高压 套管 过电压 在线监测 现场可编程门阵列 

分 类 号：TM835[电气工程—高电压与绝缘技术]