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文章摘要
一种新型消除PT二次回路压降的装置与应用
A new Integrated device foreffectivelyeliminating voltage drop in PTSsecondarycircuit
Received:September 01, 2015  Revised:September 01, 2015
DOI:
中文关键词: PT  二次回路压降  电压跟随器  精密电阻  消除装置
英文关键词: Potential transformer  Voltage drop in secondary circuit  Voltage follower  Precision resistors  Eliminator
基金项目:
Author NameAffiliationE-mail
LiPengCheng Guizhou Electric Power Research Institute 365248318@qq.com 
XiaoYong Guizhou Electric Power Research Institute gzdlxy@sina.com 
YangQinHui Guizhou Electric Power Research Institute 437054962@qq.com 
QianKun* JiangSu Gufeng Electric Power Technology Co.,Ltd ychy_qk@126.com 
WangJi Guizhou Electric Power Research Institute 214280119@qq.com 
ZhangJunWei Guizhou Electric Power Research Institute 282972837@qq.com 
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中文摘要:
      电压互感器(PT)二次回路压降是导致电力企业漏计电量的主要原因之一。不同于现有的解决方案,本文基于电压跟随器原理,提出采用电压跟随器模块与精密电阻模块同时工作于PT二次回路的方法生产一种新型装置消除PT二次回路压降。通过本文提出的方法与装置,选择与电能表阻抗匹配的精密电阻模块并联接入PT出口端,电压跟随器模块串联接入电能表端,其结果等同于电能表直接接在PT出口端形成PT二次计量回路,准确消除了PT二次回路从PT出口端至电能表端的回路压降。实际应用现场的测试数据分析表明,该方法与装置有效解决了PT二次回路压降问题,装置运行稳定可靠,具备很高的推广价值。
英文摘要:
      Thevoltage drop in the PT secondary circuit is one of the main reasons ofleakageofelectricity measurement. A new scheme,based on voltage follower and precisionresistors, is proposed to eliminatethe voltage dropaccurately. Thevoltage follower and theprecision resistors are simultaneously workingin the secondary circuit.The precision resistors that are matchingthe resistors of electric energy meter, connect in parallel to the secondary circuit nearthe PT. The voltage follower is series connection to the secondary circuitneartheelectric energy meter. The device eliminatesaccuratelythe voltage drop beteen PT and the meter and its effectis equivalent to themeterconnecting next to the PT.The analysis of measurement data from practical applications verified the performance of the proposed device and its applicationfeasibility.
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