| 一体化电子式电流电压互感器研究 |
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| 引用本文： | 段雄英,邹积岩,廖敏夫,张可卫.一体化电子式电流电压互感器研究[J].上海大学学报(英文版),2002,6(1):79-84. |
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| 作者姓名： | 段雄英 邹积岩 廖敏夫 张可卫 |
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| 作者单位： | [1]Dept.ofElectricalEngineering,HuazhongUniversityofScienceandTechnology,Wuhan430074,China [2]Dept.ofElectricalandElectronicEngineering,DalianUniversityofTechnology,Dalian116024,China |
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| 摘 要： | A high-performance current and voltage measurement system has been developed in power system.The system is composed of two parts:one current measurement element and one voltage measurement element.A Rogowski coil and a capacitive voltage divider are used respectively for the line current and voltage measurements.Active electronic components are used to modulate signal,and power supply for these components is drawn from power line via an auxiliary current transformer,Measurement signal is transmitted y optical fibers,which is resistant to electromagnetic induction and noise,With careful design and the use of digital signal processing technology,the whole system can meet 0.5% accuracy for metering and provides large dynamic range coupled with good accuracy for protective relaying use.
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| 关 键 词： | 电力系统 数字电流转换器 数字电压转换器 |
| 收稿时间： | 5 June 2001 |
Combined digital electronic current and voltage transducer |
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| Xiong-Ying Duan Ph. D. Candidate,Ji-Yan Zou,Min-Fu Liao,Ke-Wei Zhang.Combined digital electronic current and voltage transducer[J].Journal of Shanghai University(English Edition),2002,6(1):79-84. |
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| Authors: | Xiong-Ying Duan Ph D Candidate Ji-Yan Zou Min-Fu Liao Ke-Wei Zhang |
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| Institution: | 1. Dept. of Electrical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
2. Dept. of Electrical and Electronic Engineering, Dalian University of Technology, Dalian 116024, China |
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| Abstract: | A high performance current and voltage measurement system has been developed in power system. The system is composed of two parts: one current measurement element and one voltage measurement element. A Rogowski coil and a capacitive voltage divider are used respectively for the line current and voltage measurements. Active electronic components are used to modulate signal, and power supply for these components is drawn from power line via an auxiliary current transformer. Measurement signal is transmitted by optical fibers, which is resistant to electromagnetic induction and noise. With careful design and the use of digital signal processing technology, the whole system can meet 0.5% accuracy for metering and provides large dynamic range coupled with good accuracy for protective relaying use. |
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| Keywords: | electronic current transducer (ECT) electronic voltage transducer (EVT) Rogowski coil capacitive voltage divider (CVD) optical fiber |
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