摘要
为了获得导线上单个电晕放电点的位置,搭建基于无线电干扰时域测量系统的直流单点电晕放电定位系统。采用时差估计方法设计4个无线电干扰测试天线组成的测试阵列,并使用能量最小值法实现对测试天线时间延迟的准确估计。基于时差定位原理建立定位方程组,利用牛顿-拉夫逊法和空间搜索算法结合求解方程组计算电晕放电点的位置坐标。实验结果表明,开发的定位测试系统可以有效地实现对单个电晕放电点定位。
In order to obtain the position of a single corona discharge point on the wire,a DC single-point corona discharge positioning system based on a radio interference time domain test system was built.A test array composed of four radio interference test antennas was designed using the time difference of arrival method.The energy minimum criterion was used to realize accurate estimation of the time delay of the four test antennas.According to the principle of time difference positioning,the positioning equations were established,and the Newton-Raphson method and the searching in space algorithm were used to calculate the position coordinates of the corona discharge points.The experimental results show that the developed positioning test system can effectively locate a single corona discharge point.
作者
李学宝
吴昊天
马浩
王振硕
Li Xuebao;Wu Haotian;Ma Hao;Wang Zhenshuo(State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University,Beijing 102206,China)
出处
《电工技术学报》
EI
CSCD
北大核心
2020年第22期4816-4824,共9页
Transactions of China Electrotechnical Society
基金
国家自然科学基金重点资助项目(51707066)。
关键词
电晕放电
无线电干扰
定位
时差估计
Corona discharge
radio interference
positioning
time difference of arrival(TDOA)
