电力负荷管理终端防电流法窃电装置研制  

Development of Anti Current Stealing Device for Power Load Management Terminal

作　　者：杨亮 常飞 Yang Liang;Chang Fei

机构地区：[1]国电南瑞南京控制系统有限公司,江苏南京211100

出　　处：《电力系统装备》2021年第7期182-183,共2页Electric Power System Equipment

摘　　要：以电流互感器为载体,负载电流在流入其中的过程中,并且在接入到相应的电力负荷管理终端内部的交流采样装置时,产生电流法窃电行为,则电流互感器二次回路的阻抗,就会发生不同程度的变化。而且将信号变送器设置到终端内部的电流计量回路之中,可以有效隔离强弱信号,不仅如此,还能实时测量电力互感器的二次回路阻抗变化;将信号变送器的阻抗全面结合进来,匹配电路,详细的分析电流互感器一次或者二次侧不同的窃电手段。还要高效利用高频信号本身对于阻抗变化的敏感性,进而将特定频率的高频振荡信号注入到信号变送器之中,实现实时的采集和处理。对于实际的窃电而言,采取的手段不同,则高频信号的均方幅值也各不相同。基于此,本篇文章主要对电力负荷管理终端方电流法窃电装置进行深入的分析和探讨。Taking the current transformer as the carrier,if the load current is in the process of flowing into it,and when it is connected to the AC sampling device in the corresponding power load management terminal,if there is current stealing behavior,the impedance of the secondary circuit of the current transformer will change in varying degrees.Moreover,the signal transmitter is set in the current metering circuit inside the terminal,which can effectively isolate the strong and weak signals.Not only that,but also it can detect the impedance change of the secondary circuit of the power transformer in real time;the impedance of the signal transmitter is fully integrated,and then the circuit is matched,so as to realize the different power stealing means at the primary or secondary side of the current transformer The impedance effect of the interface is analyzed in detail.The high frequency signal itself will be sensitive to the impedance change,and then the high frequency oscillation signal of specific frequency will be injected into the signal transmitter,and then real-time acquisition and processing of the corresponding processing.For the actual power stealing,the mean square amplitude of the actual high-frequency signal is different with different means.Based on this,this paper mainly analyzes and discusses the current method power stealing device of power load management terminal.

关 键 词：电力负荷管理终端 防电流法 窃电装置 

分 类 号：TM71[电气工程—电力系统及自动化]