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首页> 外文期刊>Hydrotechnical Construction >DEVELOPMENT AND PILOT OPERATION OF A THREE-PHASE FULLY OPTICAL MEASURING VOLTAGE TRANSFORMER OF 220 kV WITH DIGITAL OUTPUT
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DEVELOPMENT AND PILOT OPERATION OF A THREE-PHASE FULLY OPTICAL MEASURING VOLTAGE TRANSFORMER OF 220 kV WITH DIGITAL OUTPUT

机译：具有数字输出的220 kV三相完全光学测量电压变压器的开发和试验操作

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摘要

An electronic three-phase fully fiber-optic measuring voltage transformer (FOVT) of accuracy class 0.2 for a nominal voltage of 220 kV with a digital output for operation at power system facilities, including electrical substations, is described. The operation principle of the device is based on the use of a longitudinal linear electro-optical effect (Pockels effect) for measuring AC voltage. The fiber-optic measurement scheme based on low-coherent interferometry is connected via a fiber cable to an optical high-voltage primary converter (HVPC) with an electro-optical crystal placed in it; there are no additional voltage dividers inside. The digital signal processing unit (DPU) contains optical and electronic circuits for generating, detecting, and processing an electro-optical signal. FOVT has a digital interface that complies with the IEC 61950-9-2 LE standard, and can be used as a component for the Digital Substation and Smart Power Grid technologies. The design features of the HVPC and the DPU are described and the results of the metrological characteristics of FOVT-220, based on the data obtained during the certification and pilot operation at the 220 kV electrical substation, are presented.
机译：描述了一种电子三相全光纤测量电压互感器（FOVT），精度为0.2，对于220kV的标称电压，电源系统设施的数字输出，包括电气变电站的数字输出。该装置的操作原理基于使用纵向线性电光效应（孔径效应）来测量AC电压。基于低相干干涉测量法的光纤测量方案通过光纤电缆连接到光学高压初级转换器（HVPC），其中电光晶体放入其中;内部没有额外的分压器。数字信号处理单元（DPU）包含用于生成，检测和处理电光信号的光学和电子电路。 FOVT有一个数字接口，符合IEC 61950-9-2 LE标准，可用作数字变电站和智能电网技术的组件。描述了HVPC和DPU的设计特征，并提出了基于在220kV电变电站的认证和试验操作期间获得的数据的FOVT-220的计量特性的结果。

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