电测与仪表Issue(7)：86-90,5.
采用两级分压的35 kV 电网过电压在线监测装置研制
On-line monitoring device based on two-stage subdivision for overvoltage in 35 kV grid
摘要
Abstract
An on-line monitoring device based on two-stage subdivision for overvoltage in 35 kV grid is presented in this paper .A low damped capacitive divider is designed as an overvoltage sensor in the primary subdivision .A high damped capacitive divider is designed as the secondary subdivision .The divider ’ s designing methods and response characteristics are analyzed .The power frequency ratio is in accordance with the impulse ratio .Moreover , with the data double buffering and high-speed sampling techniques , this device can collect longer data (64 Mbytes) and short-en interval time (less than 1s) at a high sampling rate (up to 20MHz).The result of the measurement indicates that the device has a good precision and can monitor internal and lightning overvoltage at a qualified precision .关键词
阻容分压器/过电压监测/配电网/双缓冲技术Key words
capacitive divider/overvoltage monitoring/distribution network/double buffering分类
信息技术与安全科学引用本文复制引用
熊庆,周凯,何珉..采用两级分压的35 kV 电网过电压在线监测装置研制[J].电测与仪表,2015,(7):86-90,5.
