Suzhou Electric Appliance Research Institute
期刊號(hào): CN32-1800/TM| ISSN1007-3175

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金屬氧化物避雷器的殘壓檢測(cè)模型

來源:電工電氣發(fā)布時(shí)間:2022-08-29 10:29 瀏覽次數(shù):426

金屬氧化物避雷器的殘壓檢測(cè)模型

李明遠(yuǎn)1,潘仁東1,周健1,錢俊杰2,邱伊云2
(1 江蘇省送變電有限公司,江蘇 南京 211102;
2 南京工程學(xué)院 電力工程學(xué)院,江蘇 南京 211167)
 
    摘 要:為了延緩金屬氧化物避雷器 (MOSA) 閥片的壽命,保障電力系統(tǒng)安全穩(wěn)定運(yùn)行,提出了基于殘壓檢測(cè)的避雷器診斷方法。將 MOSA 在沖擊電流作用下產(chǎn)生的殘壓信號(hào)作為研究對(duì)象,建立MOSA 殘壓檢測(cè)模型;利用有限元法 (FEM) 得到殘壓檢測(cè)結(jié)構(gòu)參數(shù),證明了該檢測(cè)模型不會(huì)對(duì) MOSA 產(chǎn)生不良影響。對(duì)模型進(jìn)行工頻穩(wěn)態(tài)數(shù)值仿真,結(jié)果表明所提出的 MOSA 殘壓檢測(cè)模型不僅可以降低 MOSA 本體的最大場(chǎng)強(qiáng),還可以降低 MOSA 的工頻損耗,延緩結(jié)構(gòu)老化,降低設(shè)備的事故率。
    關(guān)鍵詞: 金屬氧化物避雷器 (MOSA) ;殘壓檢測(cè);故障診斷;殘壓信號(hào);過電壓
    中圖分類號(hào):TM862     文獻(xiàn)標(biāo)識(shí)碼:A     文章編號(hào):1007-3175(2022)08-0053-05
 
Residual Voltage Detection Model of Metal Oxide Surge Arrester
 
LI Ming-yuan1, PAN Ren-dong1, ZHOU Jian1, QIAN Jun-jie2, QIU Yi-yun2
(1 Jiangsu Power Transmission & Transformation Co., Ltd, Nanjing 211102, China;
2 School of Electric Power Engineering, Nanjing Institute of Technology, Nanjing 211167, China)
 
    Abstract: This paper proposed a residual voltage detection method for MOSA to slow down the service life of the MOSA valve plate and ensure the safe and stable operation of the power system. It took the residual voltage signal generated by MOSA under the action of impulse current as the research object and established the residual voltage detection model of MOSA. Moreover, it employed FEM to obtain the structure parameters of residual voltage detection and proved the detection model would not have adverse effects on MOSA. This research used this model to do the simulation experiment of power frequency steady-state numerical value. The results show that the proposed residual voltage detection model could help reduce the maximum electric field strength,decrease the power frequency loss, delay the aging of the structure, and lower the accident rate of the equipment.
    Key words: metal oxide surge arrester(MOSA); residual voltage detection; fault diagnosis; residual voltage signal; overvoltage
 
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