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1.国网河北省电力有限公司电力科学研究院,河北省石家庄市050022
2.西安交通大学电气工程学院电工材料电气绝缘全国重点实验室,陕西省西安市710049
[ "李天辉,1984年8月,男,博士,高级工程师(教授级),电力设备状态检测与故障诊断,。" ]
[ "董驰,1988年10月,男,硕士,副高,电力设备状态检测与故障诊断,。" ]
[ "师文通,1996年6月,男,硕士,工程师,电力设备状态检测与故障诊断;。" ]
[ "顾朝敏,1985年4月,男,硕士,副高,电力设备状态检测与故障诊断。。" ]
[ "邓卓立,2000年12月,男,工学学士,研究生在读,智能传感技术,。" ]
[ "博克寒,2001年6月,男,工学学士,研究生在读,智能传感技术,。" ]
[ "褚继峰,1993年10月,男,博士,助理教授,智能传感器技术,。" ]
收稿日期:2024-10-23,
修回日期:2024-11-21,
录用日期:2024-12-31,
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李天辉, 董驰, 师文通, 等. 基于小样本随机森林模型的低气压下室内设备空气放电故障识别方法研究[J/OL]. 默认刊物名称, 2025.
LI Tianhui, DONG Chi, SHI Wentong, et al. Researchon air discharge fault identification method of indoor equipment under lowpressure based on small sample random forest model[J/OL]. Moren journal, 2025.
空气绝缘的室内电力设备发生放电故障时,利用半导体气体传感器检测空气放电分解物的成分和含量,能够判断放电故障的严重程度,因此研发智能、精准的机器嗅觉算法对监测室内电力设备的正常运行有着重要意义。本文搭建了空气放电实验平台,模拟了低气压高海拔条件下的火花和局部放电故障,通过基于半导体传感器阵列的空气放电分解物检测装置对不同放电故障的气体分解物进行特征提取,然后利用基于主成分分析的小样本扩充增强方法对数据集进行丰富和精简,最后采用随机森林算法对放电分解故障进行分类。结果表明随机森林算法平均识别准确度97.22%,并对低气压高海拔下不同放电故障的预测准确率能够达到98.24%。本文提出的基于小样本随机森林模型的空气放电分解物识别方法,适用于小样本数据集,具有识别精准等显著优势,在空气放电故障检测领域具有广阔的前景。
When adischarge fault occurs in air-insulated power indoor electrical equipment
theseverity of the discharge fault can be determined by using semiconductor gassensors to detect the composition and content of air discharge decompositionproducts. Therefore
the development of intelligent and accurate machineolfactory algorithms is of great significance for monitoring the normaloperation of indoor power equipment. This study constructs an air dischargeexperimental platform
simulating spark and partial discharge faults in highaltitude conditions with low pressure
and employs an air dischargedecomposition product detection device based on a semiconductor sensor array toextract features of gases from different discharge faults. Subsequently
a dataset enrichment and reduction method based on Principal Component Analysis (PCA)for small sample expansion is applied to enrich and refine the dataset.Finally
a Random Forest algorithm is used for the classification of dischargedecomposition faults. The results indicate that the Random Forest algorithmachieves an average recognition accuracy of 97.22%
and the prediction accuracyfor different discharge faults in high altitude conditions with low pressure canreach 98.24%. The small sample Random Forest model-based air dischargedecomposition product recognition method proposed in this paper is applicableto small sample datasets and has significant advantages such as preciseidentification
holding broad prospects in the field of air discharge faultdetection.
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