基于Prony算法的电位接地故障暂态选线方法  

Transient line selection method for potential grounding fault based on Prony algorithm

作　　者：刘军 陈远阳 LIU Jun;CHEN Yuanyang(Guangxi Radio and Television,Nanning 530022,China;Guangxi Radio and Television School,Nanning 530031,China)

机构地区：[1]广西广播电视台,广西南宁530022 [2]广西广播电视学校,广西南宁530031

出　　处：《电子设计工程》2024年第10期111-114,119,共5页Electronic Design Engineering

摘　　要：为在应急广播调频发射机系统电位接地故障情况下,根据暂态相位差水平能完成电路选线,提出了基于Prony算法的电位接地故障暂态选线方法。采用Prony算法计算滑动平均窗长度,再通过求解辨识参数的方式,确定电路功率特性,完成故障暂态数据识别。联合故障稳态分析条件,计算暂态等效电流数值,以此为基础,求解隶属函数,实现电位接地故障暂态选线。实验结果表明,所提方法作用下,两个接线端口之间的暂态相位始终等于10 V,在电位接地故障情况下,可将相位水平更为接近的端口组织连接在一起,符合实际应用需求。In order to complete circuit line selection based on transient phase difference level in the case of potential grounding fault in FM transmitter system,a transient line selection method for potential ground fault based on Prony algorithm is proposed.Prony algorithm is used to calculate the moving average window length,and then the circuit power characteristics are determined by solving the identification parameters to complete the fault transient data identification.The transient equivalent current value is calculated by combining the fault steady⁃state analysis conditions.Based on this,the membership function is solved to realize the transient line selection of potential grounding fault.The experimental results show that the transient phase between the two connection ports is always equal to 10 V under the action of the proposed method.In the case of potential ground fault,the ports with closer phase level can be connected together,which meets the practical application requirements.

关 键 词：PRONY算法 接地故障 滑动平均窗 等效电流 隶属函数 暂态相位差 

分 类 号：TN713[电子电信—电路与系统]