基于交叉比对的UHF-PD在线监测装置现场校验方法

doi:10.11930/j.issn.1004-9649.202110058

中国电力 ›› 2022, Vol. 55 ›› Issue (4): 100-107.DOI: 10.11930/j.issn.1004-9649.202110058

基于交叉比对的UHF-PD在线监测装置现场校验方法

李楠^1,2, 李松原², 尚学军², 郭博文², 李琳², 祖国强², 侯恺¹

1. 天津大学电气自动化与信息工程学院，天津 300072;
2. 国网天津市电力公司电力科学研究院，天津 300384

收稿日期:2021-10-20 修回日期:2021-12-10 出版日期:2022-04-28 发布日期:2022-04-24
作者简介:李楠（1989—），男，通信作者，博士，工程师，从事一次设备状态评价、传感器校验等研究，E-mail：nanli1989@126.com;李松原（1987—），男，高级工程师，从事电力设备智能诊断等研究，E-mail：lisongyuan1987@163.com
基金资助:
国家重点研发计划资助项目（电力物联网关键技术，2020 YFB0905900）；国家自然科学基金资助项目（丰巢配电网的结构原理与未来可用性评价，52007130）

A Field Calibration Method for UHF Partial Discharge On-line Monitoring System Based on Cross-check Algorithm

LI Nan^1,2, LI Songyuan², SHANG Xuejun², GUO Bowen², LI Lin², ZU Guoqiang², HOU Kai¹

1. School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China;
2. Electric Power Research Institute, State Grid Tianjin Electric Power Company, Tianjin 300384, China

Received:2021-10-20 Revised:2021-12-10 Online:2022-04-28 Published:2022-04-24
Supported by:
This work is supported by National Key Research and Development Program of China (Key Technologies of Power Internet of Things, No.2020 YFB0905900), National Natural Science Foundation of China（Structure Principle and Future Usability Evaluation of Fengchao Distribution Network, No.52007130）.

摘要/Abstract

摘要： 局部放电（PD）在线监测装置对设备状态综合感知与智能诊断起到重要作用。随着运行年限的逐渐增加，受到工作环境、生产工艺等多因素影响，传感器本体性能遭受挑战，需要开展校验工作。从特高频传感器工作特性、安装位置与信号传输衰减特性3个方面对影响特高频局部放电（ultrahigh frequency partial discharge，UHF-PD）在线监测系统现场校核的因素开展分析，在传统CIGRE校验方法基础上进一步提出交叉比对式校验方法，通过不同相间的横向比对、互为输入/输出情况下的镜像比对等方式有效降低绝对值检测对传感器校验准确性的影响，提升了整体校验效率。最终，采用所提出的交叉比对式校验方法对某变电站高压500 kV侧GIS UHF-PD在线监测装置开展现场校核，成功发现传感器灵敏度下降、传感器部署位置不合理以及采集板故障3种典型问题，验证了该方法的有效性和可行性。

关键词: UHF-PD在线监测, 现场校验, 精益化评价, 交叉比对, 典型缺陷识别

Abstract: Partial discharge (PD) on-line monitoring device plays an important role in comprehensive perception and intelligent diagnosis of equipment conditions. Affected by the operational environment, manufacturing technology and other factors, the on-line PD sensors are deteriorated in performance with the increase of their service time, the sensors’ calibration is thus imperative. An optimized field calibration method is proposed for the internal ultrahigh frequency partial discharge (UHF-PD) sensors of on-line PD monitoring system. Firstly, the influencing factors on the field calibration of the UHF-PD on-line monitoring system are analyzed from three aspects including sensors’ working features, installation location and signal transmission attenuation properties. Then, a novel cross-check method is proposed based on the traditional GIGRE method. Through horizontal comparison between different phases and mirror comparison between input/output signals, the effects of absolute-value check on the accuracy of sensor’s calibration is significantly decreased, thus improving the overall calibration efficiency. Finally, the proposed method was applied in a 500 kV substation for field calibration of the UHF-PD on-line monitoring system, and identified three typical defects, including the degraded sensors’ sensitivity, unreasonable sensors arrangement and faulted acquisition board. The results verified the effectiveness and feasibility of the proposed method.

Key words: UHF-PD on-line monitoring system, field calibration, lean evaluation, cross-check, identification of typical defects

李楠, 李松原, 尚学军, 郭博文, 李琳, 祖国强, 侯恺. 基于交叉比对的UHF-PD在线监测装置现场校验方法[J]. 中国电力, 2022, 55(4): 100-107.

LI Nan, LI Songyuan, SHANG Xuejun, GUO Bowen, LI Lin, ZU Guoqiang, HOU Kai. A Field Calibration Method for UHF Partial Discharge On-line Monitoring System Based on Cross-check Algorithm[J]. Electric Power, 2022, 55(4): 100-107.

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https://www.electricpower.com.cn/CN/Y2022/V55/I4/100

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基于交叉比对的UHF-PD在线监测装置现场校验方法

A Field Calibration Method for UHF Partial Discharge On-line Monitoring System Based on Cross-check Algorithm

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基于交叉比对的UHF-PD在线监测装置现场校验方法

A Field Calibration Method for UHF Partial Discharge On-line Monitoring System Based on Cross-check Algorithm

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