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August 14, 2026High VoltageOpen Access

Cone‐Type Insulator Surface Electric Field Measurement Based on Advanced Integrated Optical Electric Field Sensor

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Authors

JZJuntong ZongWQWeiqi QinZZZhecheng Zhang

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Overview

Experimental study demonstrates accurate near-surface electric field measurement on a 126 kV cone-type insulator using an integrated optical sensor, suggesting improved power equipment monitoring.

Key Points

  • To develop and validate a compact integrated optical electric field sensor based on thin-film lithium niobate for direct electric field measurement on gas-insulated equipment insulators.
  • Fabricated an integrated optical electric field sensor (IOES) utilizing the electro-optic effect of thin-film lithium niobate coupled with an auxiliary micro-ring on a waveguide arm to achieve millimeter-scale packaging.
  • Performed finite element simulations of electric field distributions on a 126 kV cone-type insulator and conducted experimental verification to compare measured fields against simulation models.
  • The integrated sensor demonstrated a linearity exceeding 99% and a dynamic range surpassing 84 dB.
  • Experimental measurements closely matched simulation profiles above the insulator, achieving an error margin of 1.56% in high-field sections.

Cite This Study

Zong et al. (2026) studied this question.

synapsesocial.com/papers/6a7ee587b70b84ec8b9146f0https://doi.org/10.1049/hve2.70234
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