基于OCSVM的氣體絕緣組合電器故障檢測
高玉峰
(國網(wǎng)江蘇省電力有限公司徐州供電分公司, 江蘇 徐州 221005)
摘 要:為了檢測氣體絕緣組合電器(GIS)故障,提出了一種基于單分類支持向量機(OCSVM)的設備故障檢測方法。該方法以選取GIS金屬外殼振動加速度以及氣體壓力作為狀態(tài)監(jiān)測量,為了解決設備振動幅值受負載變化影響的問題,提取外殼振動信號峭度因子,與氣體壓力共同作為狀態(tài)特征量;利用GIS正常狀態(tài)特征量數(shù)據(jù)訓練OCSVM模型,得到設備故障檢測器,并利用故障檢測器檢測當前狀態(tài)特征變量的異常程度來實現(xiàn)設備故障的檢測,現(xiàn)場實測數(shù)據(jù)分析結果驗證了該方法的有效性。
關鍵詞:氣體絕緣組合電器;單分類支持向量機;峭度因子;氣體壓力;故障檢測
中圖分類號:TM595 文獻標識碼:B 文章編號:1007-3175(2020)05-0052-04
Fault Detection of Gas Insulated Switchgear Based on One Class Support Vector Mechine
GAO Yu-feng
(State Grid Jiangsu Electric Power Co., Ltd Xuzhou Power Supply Branch, Xuzhou 221005, China)
Abstract: In order to detect the fault of Gas insulated switchgear, a fault detection method based on one class support vector machine (OCSVM) is proposed.In this method, the vibration acceleration and gas pressure of the GIS metal casing are selected as the state monitoring variables.In order to solve the problem that the vibration amplitude of GIS metal enclosure is affected by the load, the kurtosis of the metal enclosure vibration signal is extracted and the gas pressure is used as the state characteristic quantity.The OCSVM model is trained by using the GIS normal state feature data to obtain the equipment fault detector, and the fault detector is used to detect the abnormal degree of the current state characteristic variables to realize the detection of equipment faults.The results of field measurement data analysis verify the effectiveness of the method.
Key words: gas insulated switchgear; one class support vector mechine; kurtosis; air pressure; fault detection
參考文獻
[1] 汪沨,邱毓昌. 氣體絕緣開關裝置(GIS)的近期發(fā)展動向[J]. 電網(wǎng)技術,2003,27(2):54-57.
[2] 王建生,邱毓昌,吳向華,等. 用于GIS局部放電檢測的超高頻傳感器頻率響應特性[J]. 中國電機工程學報,2000,20(8):42-45.
[3] 齊波,李成榕,耿弼博,等. GIS設備絕緣子高壓電極故障局部放電嚴重程度的診斷與評估[J]. 高電壓技術,2011,37(7):1719-1727.
[4] 董玉璽,解德英,李淵,等. 超高頻與超聲檢測法在GIS設備現(xiàn)場局放定位中的應用研究[J]. 電器與能效管理技術,2015(22):31-35.
[5] 左帆,錢超,萬杰楓,等. GIS綜合在線監(jiān)測系統(tǒng)設計[J]. 電器與能效管理技術,2015(20):28-31.
[6] 齊波,李成榕,駱立實,等. GIS中局部放電與氣體分解產物關系的試驗[J]. 高電壓技術,2010,36(4):957-963.
[7] National Power Grid Corp Maintenance and Maintenance Department.High-voltage switchgear typical fault case compilation[M]. Beijing:China Electric Power Press,2012.
[8] 李凱,許洪華,陳冰冰,等. GIS振動機理及固有頻率研究[J]. 電測與儀表,2017,54(3):14-18.
[9] 李凱,許洪華,馬宏忠,等. GIS針尖類局部放電引起的振動特性研究[J]. 陜西電力,2016,44(9):80-84.
[10] 楊景剛,劉媛,宋思齊,等.GIS設備機械缺陷的振動檢測技術研究[J]. 高壓電器,2018,54(11):86-90.