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

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某220 kV智能變電站主變間隙保護(hù)誤動(dòng)分析

來源:電工電氣發(fā)布時(shí)間:2018-09-13 10:13 瀏覽次數(shù):678
某220 kV智能變電站主變間隙保護(hù)誤動(dòng)分析
 
陳軍1,張路2,崔大林3,南東亮2,陳龍2
(1 國網(wǎng)新疆電力有限公司吐魯番供電公司,新疆 吐魯番 838000;2 國網(wǎng)新疆電力有限公司電力科學(xué)研究院,新疆 烏魯木齊 830011;
3 國網(wǎng)新疆電力有限公司電力調(diào)度控制中心,新疆 烏魯木齊 830011)
 
    摘 要:通過對(duì)某220 kV智能變電站主變保護(hù)誤動(dòng)事故進(jìn)行分析,得出影響保護(hù)誤動(dòng)的因素:一是專業(yè)人員對(duì)設(shè)備的原理和處理方法缺乏了解,現(xiàn)場難以發(fā)現(xiàn)一些隱性故障;二是在設(shè)備檢修過程中,對(duì)安全措施的制定方法和程度難以準(zhǔn)確掌握,容易人為造成隱性故障。指出運(yùn)行及檢修人員要深入了解智能變電站技術(shù),提高繼電保護(hù)運(yùn)行可靠性,準(zhǔn)確隔離電網(wǎng)故障。
    關(guān)鍵詞:繼電保護(hù);非全相運(yùn)行;中性點(diǎn)間隙保護(hù);故障分析
    中圖分類號(hào):TM774     文獻(xiàn)標(biāo)識(shí)碼:B     文章編號(hào):1007-3175(2018)09-0038-04
 
Analysis of Main Transformer Gap Protection Malfunction in Certain 220 kV Smart Substation
 
CHEN Jun1, ZHANG Lu2, CUI Da-lin3, NAN Dong-liang2, CHEN Long2
(1 Tulufan Electric Power Supply Company of State Grid Xinjiang Power Company, Tulufan 838000, China;
2 Electric Power Research Institute of State Grid Xinjiang Power Company, Urumqi 830011 , China;
3 Electric Power Dispatching and Communication Center of State Grid Xinjiang Power Company, Urumqi 830011 , China)
 
    Abstract: Based on the analysis of main transformer protection malfunction accident in certain 220 kV smart substation, it is concluded that there were two main factors to affect on protection malfunction. On the one hand, the specialized persons did not know the principles and methods of the equipment, and it was hard to find some hidden faults at the scene, on the other hand, in the process of equipment maintenance, the method and degree of safety measures were difficult to be accurately mastered, and it was easy to cause man-made hidden faults. It is pointed out that the operation and maintenance personnel should have in-depth knowledge of smart substation technology to improve the operation reliability of relay protection.
    Key words: relay protection; open-phase operation; gap protection of transformer neutral point; fault analysis
 
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