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TANG Zhitao,ZHUO Haoze,LI Jinjin,WEI Xingqiu,LONG Dong.Effect of Strong Magnetic Field on Metering Performance of Electronic and Traditional Transformers[J].JOURNAL OF POWER SUPPLY,2019,17(5):146-152
Effect of Strong Magnetic Field on Metering Performance of Electronic and Traditional Transformers
Received:June 05, 2017  Revised:February 01, 2019
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DOI:10.13234/j.issn.2095-2805.2019.5.146
Keywords:strong magnetic field  electronic transformer  traditional transformer  metering performance
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TANG Zhitao Electric Power Research Institute, Guangxi Power Grid Co., Ltd, Nanning , China tang_zt.sy@gx.csg.cn
ZHUO Haoze Electric Power Research Institute, Guangxi Power Grid Co., Ltd, Nanning , China
LI Jinjin Electric Power Research Institute, Guangxi Power Grid Co., Ltd, Nanning , China
WEI Xingqiu Electric Power Research Institute, Guangxi Power Grid Co., Ltd, Nanning , China
LONG Dong Electric Power Research Institute, Guangxi Power Grid Co., Ltd, Nanning , China
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Abstract:
      The variation of magnetic field has certain influence on the metering accuracy of both the coil-type electronic transformer and the traditional transformer. In this paper, through theoretical analysis, the influences of parallel and vertical components on the metering accuracy of transformer output were studied under different electromagnetic interferences. Based on the developed quantitative contrast test platform, which was used to measure the metering characteristics of the electronic and traditional transformers, the difference in the accumulated electrical energy was analyzed. In addition, under the electromagnetic interferences of 50 and 1 000 A/m, the ratio and angle differences of the electronic current and electronic voltage transformers were measured in real time. Experimental results show that the metering performances of the electronic and traditional transformers were basically not affected by the strong magnetic field.
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