一种新型的放电源空间定位用特高频传感器

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摘要采用特高频传感器阵列对放电源进行空间定位可极大地提高电力设备状态检修的效率,该文在研究确立空间定位用特高频传感器性能要求的基础上,基于单极天线理论和曲流技术,设计了一种球面锥形结构的新型特高频传感器。通过仿真及实验检测,对该传感器的性能进行了系统的研究,并对影响传感器各项性能的因素进行了探讨。实验室搭建的局放检测定位平台对传感器阵列的空间定位性能进行了验证。实验结果表明：曲流技术的应用可实现传感器的小型化,本文研制的传感器在500~2 000MHz带宽内具有驻波比低、全向、高灵敏度、及群时延一致性好等特点,基于特高频传感器阵列的定位系统能够对放电源进行准确定位,方位角误差小于2°,能够满足局放源空间定位的要求。

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	叶海峰
	钱勇
	刘宗杰
	盛戈皞
	江秀臣

关键词 ：空间定位, 局部放电, 特高频传感器, 群时延, 灵敏度

Abstract：Partial discharge(PD) source location using an array of ultra-high frequency(UHF) sensors significantly improves the maintenance efficiency of power equipment. This paper studies the performance requirements of the UHF sensors for spatial location and designs a new type of UHF sensor with a spherical cone structure based on the monopole antenna theory and meander technique. This paper provides systematic analysis on the sensor performance by simulation and test. It also discusses the factors influencing the sensor performance. The positioning performance of the array of the sensors was verified on the PD detection and location platform set up in our laboratory. The test results show that the meander technique helps develop compact sensors. The sensors developed in this paper can be used in the bandwidth range of 500~2 000 MHz and have advantages such as a low standing wave ratio, omni-directional measurement, high sensitivity, and almost constant group delay. The positioning system based on UHF sensor arrays can be used for accurate PD source location with an azimuth error of less than 2 degrees, thereby meeting the requirements for spatial location of PD sources.

Key words： Spatial location partial discharge(PD) ultra high frequency(UHF) sensor group delay sensitivity

收稿日期: 2013-04-22 出版日期: 2015-05-25

PACS:

TM815

基金资助:国家高技术研究发展计划(863计划) 资助项目(SS2012AA050803)

作者简介: 叶海峰男,1982年生,博士研究生,研究方向为大型电力设备在线监测与故障诊断。钱勇男,1977年生,博士,讲师,研究方向为输变电设备状态监测与智能化。

引用本文:

叶海峰, 钱勇, 刘宗杰, 盛戈皞, 江秀臣. 一种新型的放电源空间定位用特高频传感器[J]. 电工技术学报, 2015, 30(8): 333-340. Ye Haifeng, Qian Yong, Liu Zongjie, Sheng Gehao, Jiang Xiuchen. A New UHF Sensor for Spatial Location of Partial Discharge Sources. Transactions of China Electrotechnical Society, 2015, 30(8): 333-340.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2015/V30/I8/333

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