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Performance analyses for fast variable optical attenuator based optical current transformer

机译：基于快速可变光衰减器的光电流互感器的性能分析

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摘要

In this paper, we analyze the performance of the electro-optic hybrid optical current transformer (HOCT) proposed by ourselves for high-voltage metering and protective relaying application. The transformer makes use of a fast variable optical attenuator (FVOA) to modulate the lightwave according to the voltage from the primary current sensor, such as low-power current transformer (LPCT). In order to improve the performance of the transformer, we use an optic-electro feedback loop with the PID control algorithm to compensate the nonlinearity of the FVOA. The linearity and accuracy of the transformer were analyzed and tested. The results indicate that the nonlinearity of the FVOA is completely compensated by the loop and the ratio and phase errors are under 0.07% and 5 minutes respectively, under the working power of less than 1 mW power. The transformer can be immune to the polarization and wavelength drift, and also robust against the environmental interference.
机译：在本文中，我们分析了我们自己提出的用于高压计量和保护继电应用的电光混合光学电流互感器（HOCT）的性能。变压器利用快速可变光衰减器（FVOA）根据来自初级电流传感器（例如低功率电流互感器（LPCT））的电压来调制光波。为了提高变压器的性能，我们使用带有PID控制算法的光电反馈回路来补偿FVOA的非线性。对变压器的线性度和精度进行了分析和测试。结果表明，在小于1 mW的工作功率下，环路完全补偿了FVOA的非线性，比率和相位误差分别小于0.07％和5分钟。变压器可以抵抗极化和波长漂移，并且对环境干扰也很稳定。

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  • 来源
    《Fiber optic sensors and applications XI》|2014年|90980Z.1-90980Z.6|共6页
  • 会议地点 Baltimore MD(US)
  • 作者

    Pu Wei; Chen Chen; Xuefeng Wang; Xuekang Shan; Xiaohan Sun;

  • 作者单位

    National Research Center for Optical Sensing/Communications Integrated Networking Lab of Photonics and Optical Communications, Southeast University, Nanjing, 210096, China;

    National Research Center for Optical Sensing/Communications Integrated Networking Lab of Photonics and Optical Communications, Southeast University, Nanjing, 210096, China;

    National Research Center for Optical Sensing/Communications Integrated Networking Lab of Photonics and Optical Communications, Southeast University, Nanjing, 210096, China;

    National Research Center for Optical Sensing/Communications Integrated Networking Lab of Photonics and Optical Communications, Southeast University, Nanjing, 210096, China;

    National Research Center for Optical Sensing/Communications Integrated Networking Lab of Photonics and Optical Communications, Southeast University, Nanjing, 210096, China;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    optical current transformer; fast variable optical attenuator; low-power current transformer;

    机译：光学电流互感器快速可变光衰减器；小功率电流互感器;

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