基于光纤法布里-珀罗干涉仪的高压静电传感器

发布时间：2018-12-13 22:16

【摘要】：静电电压表对测量交直流高压有着非常重要的作用。为了实现高电压静电电压表的精确测量,提出并制备了一种采用法布里珀罗(FP)腔干涉原理的静电电压传感器。所设计的传感器电极与高压电极构成一组静电电压测量电极,此传感器的FP腔由光纤准直器和外侧镀铝的聚酯膜构成,当在高压电极施加载荷时,聚酯膜与高压电极之间产生均匀电场,在电场力作用下聚酯膜产生形变,从而改变FP腔的腔长,造成FP传感器的输出光谱偏移,采用相位解调法获得高压电极上施加的载荷,实现电压的静电测量。实验结果表明:可实现5~16kV直流高压和交流高压有效值的测量,5~10kV范围测量精度为1.21%,10~16kV的测量精度为0.61%。此传感器满足高电压的测量要求。
[Abstract]:Electrostatic voltmeters play an important role in measuring AC / DC high voltage. In order to realize accurate measurement of high voltage electrostatic voltmeter, an electrostatic voltage sensor based on the principle of Fabry-Perot (FP) cavity interference is proposed and fabricated. The designed sensor electrode and high voltage electrode constitute a group of electrostatic voltage measuring electrodes. The FP cavity of the sensor is composed of optical fiber collimator and aluminum coated polyester film on the outside. When the load is applied on the high voltage electrode, There is a uniform electric field between the polyester film and the high voltage electrode, and the film is deformed under the electric field force, which changes the cavity length of the FP cavity and results in the offset of the output spectrum of the FP sensor. The load applied on the high voltage electrode is obtained by the phase demodulation method. The electrostatic measurement of voltage is realized. The experimental results show that the effective values of 5~16kV DC and AC high voltage can be measured, and the accuracy of 5~10kV range measurement is 1.21 and 10 ~ (10) ~ (16) kV respectively. This sensor can meet the requirement of high voltage measurement.
【作者单位】：哈尔滨理工大学工程电介质及应用技术教育部重点实验室;
【基金】：国家973计划(2012CB723308) 南方电网重点科技项目(KZB2011014)
【分类号】：TM933.22;TP212

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