西安电线电缆厂家,一种带钢铠的低压电力电缆故障精确定位新方法

一种带钢铠的低压电力电缆故障精确定位新方法

作者单位：

王广柱，电网智能化调度与控制教育部重点实验室（山东大学）

贾春娟，电网智能化调度与控制教育部重点实验室（山东大学

张立斌，淄博博鸿电气有限公司

关键词:  故障定位 电缆钢铠 三维瞬变磁场

摘要:提出了一种带钢铠的低压电力电缆故障点精确定位新方法，该方法利用电缆钢铠的绕制特点，在故障电缆芯线与钢铠之间施加高压脉冲并产生闪络放电，通过检测和比较故障电缆周围及故障点前后的合成三维瞬变磁场信号变化，来判断电缆故障点的精确位置。对流过钢铠的闪络放电电流产生的磁场进行了理论分析和仿真计算，现场试验结果验证了该方法的可行性和有效性。基于该方法原理，研制了样机，并被应用于实际电缆故障点定位。该方法是一种非接触式的电缆故障点定位方法，它不仅可用于直埋敷设式电缆，而且也可用于管道或地沟敷设式电缆。

A Novel Method of Fault Accurate Location for Low Voltage Power Cables with Steel Armor

KeyWords: power cable fault location cable steel armor 3-D transient magnetic field

Abstract:This paper presents an accurate fault location method for low voltage（LV）power cable with steel *** proposed method uses the characteristics of the cable steel armor winding，applies the high-voltage pulse between the fault cable wire and steel armor to produce flashover discharge and detects the three-dimensional transient magnetic field signal around the ***ed with the synthetic magnetic signal generated by the discharge current in the cable wire and the steel armor before and after the point of failure，the method is able to determine the exact location of the cable fault *** paper analyzes and calculates the magnetic field generated by the discharge current flowing through the steel armor *** experiment results have verified the feasibility and effectiveness of the proposed *** on the principle of this method，a prototype was developed and applied to the actual locating of the cable *** proposed method is a non-contact cable fault locating method that can be used not only for direct-buried cable laying but also for cable laying as pipe laying or trench laying.

引文信息：

王广柱,贾春娟,张立斌.一种带钢铠的低压电力电缆故障精确定位新方法[J].电力系统自动化,2014,38(3):161-165.

WANG Guangzhu,JIA Chunjuan,ZHANG Libin.A Novel Method of Fault Accurate Location for Low Voltage Power Cables with Steel Armor[J].Automation of Electric Power Systems,2014,38(3):161-165.

作者信息：

王广柱，山东大学电气工程学院教授，博士生导师。研究领域：电力电子在电力系统中的应用:研究柔性直流输电变换技术，太阳能与风力发电及并网逆变技术，谐波及无功补偿，电能质量控制等；电力电子装置与系统:研究新型电力电子电路与系统，如多电平变换技术,非接触电能传输技术，高频电源等；电力传动与控制:研究交直流电机调速技术等。

贾春娟，山东大学电气工程学院副教授。研究领域：电力电子技术及在电力系统应用，新能源发电转换及接入电力系统影响分析。