10 kV无源电子式电流互感器的输出特性研究及应用分析
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引用本文:丁永生1?覮,冯娟2,李自清1.10 kV无源电子式电流互感器的输出特性研究及应用分析[J].计算技术与自动化,2020,(4):27-31
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丁永生1?覮,冯娟2,李自清1 (1. 国网电力科学研究院有限公司江苏 南京 2110002. 上海置信电气股份有限公司上海 200335) 
中文摘要:在传统技术中,电力网络中使用有源电子式电流互感器存在很多问题,诸如温漂较大、长期运行稳定性较大、温度变化较大、电磁波谐振等。这些因素将影响电力设备运行的精度和准确性,并且传统技术中采用罗氏线圈等有源互感器,由于线圈体积、重量都比较大,造成电路负荷较大。为此,采用无源电子式电流互感器,通过对其工作原理进行介绍,建立了应用数据模型,对信号处理、算法实现、输出特性进行了分析。并从原理上利用全光纤型传感器,通过分压模型将电路中的高压转换为低压,并对电子线路中输出信号进行积分、滤波、调幅、相位补偿运算,提高了信息输出的纯洁性。实验表明,采用电子式电流互感器能够降低了电力设备应用的误差。
中文关键词:电力网络  电子式电流互感器  有源互感器  全光纤型传感器  分压模型
 
Research on Output Characteristics and Application Analysis of10 kV Passive Electronic Current Transformer
Abstract:In the traditional technology,there are many problems in using active electronic current transformers in power networks,such as large temperature drift,long-term operational stability,large temperature changes,electromagnetic wave resonance,etc. These factors will affect the operation of power equipment. Accuracy and accuracy,and the use of active transformers such as Rogowski coils in the conventional technology,due to the relatively large volume and weight of the coil,resulting in a large circuit load. Aiming at this problem,passive electronic current transformer was adopted in this paper,through the introduction of its working principle,the application data model was established,and the all-fiber sensor in principle is used to convert the high voltage in the circuit to low voltage through the partial pressure model. And integrate,filter,amplitude-modulate,and phase-compensate the output signals in the electronic circuit to improve the purity of the information output. Tests have shown that the use of electronic current transformers can reduce the error of power equipment applications.
keywords:power network  electronic current transformer  active transformer  all-fiber sensor  partial pressure model
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