摘要
为了对超高压变电站的开关瞬态磁场进行有效的测量,该文研制了一套光纤瞬态磁场传感器。采用单匝线圈作为磁场探头,利用光纤作为信号传输通路,解决了强电磁干扰环境内的瞬态磁场测量问题。提出了数字频率均衡方法,满足了变电站开关瞬态磁场测量对传感器的宽频带要求。实验室测试和现场应用表明,该传感器在频带宽度、测量范围、线性度和抗电磁干扰性能等方面,均可满足变电站开关瞬态磁场测量的要求。将该传感器应用于我国某500kV变电站开关操作和电抗器投切操作产生的瞬态磁场测量,取得了满意的结果。
In order to measure the transient magnetic field due to switching operations in high voltage substations, an optical fiber sensor is developed. A single loop is used as inductive probe of the sensor, and the sensing signal is transmitted to the receiver via an optical fiber link. In order to compensate the frequency characteristic of the probe, a digital frequency balancing method is studied, and the digital balancing network is designed. The results of the testing in laboratory and measured in substation show that the specifications of the sensor satisfy the requirements for measuring the transient magnetic field in substations.
出处
《中国电机工程学报》
EI
CSCD
北大核心
2003年第1期88-92,共5页
Proceedings of the CSEE
基金
国家自然科学基金项目(50077006)
教育部高等学校优秀青年教师奖励基金
高等学校骨干教师资助计划。~
关键词
光纤瞬态磁场传感器
频率特性
电磁兼容性
超高压变电站
optical fiber sensor
substation
switching operations
transient magnetic field
digital frequency balance
