| 电子式电流互感器的一种高压侧低功耗信号调制方法 |
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| 引用本文： | 范红勇,李红斌,张艳. 电子式电流互感器的一种高压侧低功耗信号调制方法[J]. 高压电器, 2006, 42(5): 388-389,392 |
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| 作者姓名： | 范红勇 李红斌 张艳 |
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| 作者单位： | 华中科技大学电气与电子工程学院,湖北,武汉,430074;华中科技大学电气与电子工程学院,湖北,武汉,430074;华中科技大学电气与电子工程学院,湖北,武汉,430074 |
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| 基金项目： | 教育部科学技术研究项目 |
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| 摘 要： | 高压光纤电流互感器高压侧大多采用激光供电方式。为了提高系统可靠性,要求高压侧电路功耗尽可能低,对高压侧信号调制方法提出了较高的要求。相对于一般的A/D转换电路,V/F转换电路结构简单,功耗低,并且转换速度可以满足计量及稳态保护的要求。介绍了一种基于V/F转换原理的空芯电流互感器高压侧信号调制方法,并在低压侧实现解调。经试验,系统线性度在5%～120%额定输入测量范围内达0.04%,高压侧电路功耗仅23mW。
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| 关 键 词： | Rogowski线圈 光供电 功耗 V/F转换 |
| 文章编号： | 1001-1609（2006）05-0388-02 |
| 收稿时间： | 2006-03-01 |
| 修稿时间： | 2006-03-01 |
A Signal Modulation Method on High Voltage Side of Electronic Current Transformer with Low Power Consumption |
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| FAN Hong-yong,LI Hong-bin,ZHANG Yan. A Signal Modulation Method on High Voltage Side of Electronic Current Transformer with Low Power Consumption[J]. High Voltage Apparatus, 2006, 42(5): 388-389,392 |
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| Authors: | FAN Hong-yong LI Hong-bin ZHANG Yan |
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| Affiliation: | School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China |
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| Abstract: | Optical power supply is usually adopted by the high voltage side of electronic current transformer. To improve the reliability of the system, the power consumption of modulation circuit in high voltage side is demanded as low as possible. Compared with general A/D conversion circuit, the V/F circuit has simple structure and low power consumption, and the conversion speed can meet the requirement of steady-state protection. A kind of modulation method based on the V/F principle is introduced. The test results show that the power consumption of high voltage side circuit is only 23 mW and the system linearity is 0.04% from 5% to 120% within the rated input scope. |
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| Keywords: | Rogowski coil optical power supply power consumption voltage to frequency converter |
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