Experimental Study on the Effect of Vibration on PZT Modulated Fiber-optic Current Transformer

LIU Bin; ZHANG Min; WANG Qing; DENG Xiaopin; LIU Yong; HUANG Yongxi

doi:10.13296/j.1001-1609.hva.2026.05.015

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Experimental Study on the Effect of Vibration on PZT Modulated Fiber-optic Current Transformer

Research & Analysis | 更新时间：2026-05-13

- Experimental Study on the Effect of Vibration on PZT Modulated Fiber-optic Current Transformer
- High Voltage Apparatus Vol. 62, Issue 5, Pages: 132-140(2026)
- 作者机构：
  
  中国电力科学研究院有限公司，武汉 430074
  国家电网有限公司，北京 100031
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2026.05.015
  CLC：
- Received：03 September 2025，
  
  Revised：2025-12-06，
  
  Published：16 May 2026
- 稿件说明：
移动端阅览
LIU Bin, ZHANG Min, WANG Qing, et al. Experimental Study on the Effect of Vibration on PZT Modulated Fiber-optic Current Transformer[J]. High Voltage Apparatus, 2026, 62(5): 132-140.
DOI：

LIU Bin, ZHANG Min, WANG Qing, et al. Experimental Study on the Effect of Vibration on PZT Modulated Fiber-optic Current Transformer[J]. High Voltage Apparatus, 2026, 62(5): 132-140. DOI： 10.13296/j.1001-1609.hva.2026.05.015.

摘要

压电陶瓷（PZT）调制式全光纤电流互感器（FOCT）广泛应用在特高压直流工程中，对振动敏感是PZT调制式FOCT发生故障的主要原因之一。为研究振动对PZT调制式FOCT的影响，开展振动响应试验，分析不同振动激励对FOCT不同部件的影响。结果表明：振动对PZT调制式FOCT影响最大的部位为调制箱，其中的延时光纤是导致振动时FOCT输出异常的主要器件；当外界振动影响到延时光纤时，会产生非互易相位角，该相位角与Faraday相位角相互叠加，引入非互易相位误差；振动引起的误差与受振动干扰的光纤长度、干扰处距反射镜的时间延时、振动幅值、振动加速度均相关；提出的整体和局部振动响应试验方法可以有效考核PZT调制式FOCT的振动性能。文中的分析结果可为PZT调制式FOCT的振动试验方法、减振结构设计提供参考依据。

Abstract

PZT modulated FOCT is widely used in UHVDC projects. Sensitivity to vibration is one of the main reasons for the failure of PZT modulated FOCT. For studying the influence of vibration on PZT modulated FOCT

the vibration response test is performed to analyze the influence of different vibration excitations on different parts of FOCT. The results show that the part mostly affected by vibration in the PZT-modulated FOCT is the modulatino box

of which the delay optical fiber is the main component that causes the abnormal output of FOCT during vibration. When the external vibration affects the delay optical fiber

a non-reciprocal phase angle is generated

which superimposes the Faraday phase angle and introduces the non-reciprocal phase error. The error caused by vibration is related to the length of the optical fiber interfered by vibration

the time delay between the interference and the mirror

the vibration amplitude and the vibration acceleration. The proposed overall and local vibration response test method can effectively evaluate the vibration performance of PZT modulated FOCT. The analysis results in this paper can provide reference for the vibration test method and vibration reduction structure design of PZT modulated FOCT.

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references

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