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| 0.002级弱电流互感器的研制 | |
| 引用本文： | 王猛,彭时雄,郁寅峰,杨林.0.002级弱电流互感器的研制[J].电测与仪表,2011,48(9):42-46. |
| 作者姓名： | 王猛 彭时雄 郁寅峰 杨林 |
| 作者单位： | 1. 中国电力科学研究院,北京,100192 2. 华北电力科学研究院,北京,100045 3. 保定炜达电力设备公司,河北保定,071000 |
| 摘 要： | 为满足电能计量中弱电流高准确度测量要求,研制了一种新型、高准确度、采用零磁通补偿原理和无源补偿方式的弱电流互感器研制.针对电流小到2.5mA的弱电流互感器一次绕组匝数多,容性泄漏电流影响大,提出控制绕组层间电压、层间电场强度和层间电容、优化设计的容性误差补偿线路等一系列技术措施,从而有效地降低了容性误差.该互感器的原理... |
| 关 键 词： | 弱电流互感器 误差分析 激磁误差 容性误差 |
Development on Low-range Current Transformer with 0.002-class |
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| WANG MRNG,Peng Shi-xiong,YU Yan-feng,YANG Lin.Development on Low-range Current Transformer with 0.002-class[J].Electrical Measurement & Instrumentation,2011,48(9):42-46. | |
| Authors: | WANG MRNG Peng Shi-xiong YU Yan-feng YANG Lin |
| Affiliation: | 1.China Electric Power Research Institute,Beijing 100192,China.2.North China Electric Power Research Institute,Beijing 100045,China.3.Baoding Weida Electric Device Company,Baoding 071000,Hebei,China) |
| Abstract: | To satisfy the high precise calibration requirement of minimal current in electric energy measurement,a new type of High-Accuracy Low-Range Current Transformer is described in the paper based on Zero-Flux Compensation method and passive compensation technique.Such low current of 2.5mA,with many wingding turns,the influence of capacitive leakage current is great.A series of special means proposed in the paper such as control of winding layer voltage,layer electric field intensity and layer capacitance,optimization design of capacitive error compensating circuit,the accuracy has significantly been improved.The theory design and calculation method,error analysis of this current transformer are given.Special technical means used for reducing the capacitive error and exciting error are introduced too. |
| Keywords: | low-range current transformer error analysis exciting error capacitive error |
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