基于PCB罗氏线圈的暂态电流采集装置
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摘要
故障暂态电流包含了大量的故障信息,是输电线路故障定位和故障诊断的主要依据。以开启式PCB罗氏线圈为故障电流传感器,实现故障暂态电流的低成本获取,通过窗口比较器实现对触发阀值的动态设计,利用总线复用技术实现对暂态故障电流的实时监测,最终实现0～25 kA暂态故障电流的精确采集。有望为输电线路故障检测提供一种新的手段。
Fault transient current contains abundant fault information and is the main base for fault localization and fault diagnosis of transmission lines. Using open-type PCB Rogowski coil as fault current sensor,this paper realized low-cost acquisition of fault transient current.Dynamic design of the trigger threshold was realized through a window comparator,and bus sharing technique was used to achieve real-time monitoring of the transient fault current. Finally,accurate acquisition of 0 ～25 kA transient fault current was realized. The proposed scheme could hopefully become a new means for fault detection on transmission lines.
Fault transient current contains abundant fault information and is the main base for fault localization and fault diagnosis of transmission lines. Using open-type PCB Rogowski coil as fault current sensor,this paper realized low-cost acquisition of fault transient current.Dynamic design of the trigger threshold was realized through a window comparator,and bus sharing technique was used to achieve real-time monitoring of the transient fault current. Finally,accurate acquisition of 0 ～25 kA transient fault current was realized. The proposed scheme could hopefully become a new means for fault detection on transmission lines.
引文
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[2] LI Linna,CHE Renfei,ZANG Hongzhi. A fault cause identificaiton methodology for transmisssion lines based on support vector machines[C]∥Power and Energy Engineering Conference,Xi’an,2016:1430-1434.
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[5]高艳丰.基于电流行波的输电线路雷击识别和故障定位方法研究[D].北京:华北电力大学,2016.
[6]焦尚彬,宋丹,张青,等.基于Zig Bee无线传感器网络的煤矿监测系统[J].电子测量与仪器学报,2013,27(5):436-442.
[7]王财宝,盛戈皞,曾奕,等.基于Zig Bee技术的导线接头温度集群监测[J].电力自动化设备,2009,29(11):45-49.
[8]谢潇磊,刘亚东,刘宗杰,等.高频差分绕线PCB罗氏线圈设计[J].仪器仪表学报,2015,36(4):886-894.
[9] CHEN Qing, LI Hongbin, ZHANG Mingming, et al. Design and characteristics of two rogowski coils based on priented circuit board[J].IEEE Transactions on Instrumentation and Measurement,2006,55(3):939-943.
[10]王旭.基于Rogowski线圈脉冲电流检测技术的研究[D].哈尔滨:哈尔滨工业大学,2016.
[2] LI Linna,CHE Renfei,ZANG Hongzhi. A fault cause identificaiton methodology for transmisssion lines based on support vector machines[C]∥Power and Energy Engineering Conference,Xi’an,2016:1430-1434.
[3]高艳丰,朱永利,闫红艳,等.一种新型的输电线路双端行波故障定位方法[J].电力系统保护与控制,2016,44(8):8-13.
[4]刘亚东.输电线路分布式故障测距理论与关键技术研究[D].上海:上海交通大学,2012.
[5]高艳丰.基于电流行波的输电线路雷击识别和故障定位方法研究[D].北京:华北电力大学,2016.
[6]焦尚彬,宋丹,张青,等.基于Zig Bee无线传感器网络的煤矿监测系统[J].电子测量与仪器学报,2013,27(5):436-442.
[7]王财宝,盛戈皞,曾奕,等.基于Zig Bee技术的导线接头温度集群监测[J].电力自动化设备,2009,29(11):45-49.
[8]谢潇磊,刘亚东,刘宗杰,等.高频差分绕线PCB罗氏线圈设计[J].仪器仪表学报,2015,36(4):886-894.
[9] CHEN Qing, LI Hongbin, ZHANG Mingming, et al. Design and characteristics of two rogowski coils based on priented circuit board[J].IEEE Transactions on Instrumentation and Measurement,2006,55(3):939-943.
[10]王旭.基于Rogowski线圈脉冲电流检测技术的研究[D].哈尔滨:哈尔滨工业大学,2016.