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Fiber-optic voltage sensor for SF_(6) gas-insulated high-voltage switchgear

机译:用于SF_(6)气体绝缘高压开关设备的光纤电压传感器

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摘要

We present an optical-fiber voltage sensor for 170-kV gas-insulated high-voltage switchgear. The sensor is based on the converse piezoelectric effect of quartz. The full voltage is applied to a cylinder-shaped quartz crystal. The resulting alternating piezoelectric deformation of the crystal is sensed by an elliptical-core dual-mode fiber, which is wound onto the circumferential crystal surface. The fiber is interrogated by low-coherence interferometry. We address the dielectric design of the sensor and verify its dielectric reliability under ac overvoltages and lightning impulse voltages. We then investigate the sensor performance, including accuracy, dynamic range, bandwidth, and temperature dependence.
机译:我们提出了一种用于170 kV气体绝缘高压开关设备的光纤电压传感器。该传感器基于石英的逆压电效应。全电压被施加到圆柱状的石英晶体上。晶体产生的交替的压电变形由椭圆芯双模光纤感测,该椭圆芯双模光纤缠绕在晶体的圆周表面上。通过低相干干涉法对光纤进行询问。我们研究传感器的介电设计,并验证其在交流过压和雷电冲击电压下的介电可靠性。然后,我们调查传感器的性能,包括精度,动态范围,带宽和温度依赖性。

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