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文章摘要
变压器铁芯接地电流在线监测系统设计及其带电检测不确定度评定
Design of On-line Monitoring System for Grounding Current of Transformer Core and Evaluation of Uncertainty in Live Detection
Received:October 10, 2020
Revised:October 28, 2020
DOI：
10.19753/j.issn1001-1390.2023.04.022
中文关键词
:
关键词：铁芯接地电流
在线监测
算法升级
不确定度
标准偏差率
英文关键词
:
Keywords: Core Grounding Current
Online Monitoring
Algorithm Upgrade
Uncertainty
Standard Deviation Rate
基金项目
:
Author Name
Affiliation
E-mail
baoyushu
*
Sufangtian Electric Power Technology Co.
,
Ltd. Nanjing
3079595456@qq.com
huyongjian
Sufangtian Electric Power Technology Co.
,
Ltd. Nanjing 211102）
HZbot01919@163.com
lvjia
Sufangtian Electric Power Technology Co
2263555428@qq.com
sunxiong
Sufangtian Electric Power Technology Co
1208319383@qq.com
huangyalong
Sufangtian Electric Power Technology Co
1783505731@qq.com
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中文摘要
:
摘要：在保持变压器铁芯接地电流在线监测系统硬件设施保持不变的前提下，研究一种该系统的算法升级策略。使用30个周期数据形成的多测点多列交叉神经网络支持的机器学习系统对该系统的接地电流进行测量，同时研究一种基于6倍标准误差率的检测不确定度标识方法，研究该系统算法升级策略的同时，分析不确定度的标识方法。技术革新后的变压器铁芯接地电流监测误差，小于±0.395%，可以基本满足对变压器铁芯接地电流的测量需求。且该算法可以排除实际测量中因为变压器内部、外部复合故障导致的接地电流产生机理差异性影响。同时，重点研究了对铁芯接地电流误差测量中的扩展不确定度测量方法确认问题，认为6倍标准偏差率作为扩展不确定度测量标度，可以满足该系统的测量误差标定需求。
英文摘要
:
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