110 kV GIS故障原因分析及應(yīng)對措施
祝偉強(qiáng),張磊
(廣東電網(wǎng)有限責(zé)任公司惠州供電局,廣東 惠州 516000)
摘 要:以某變電站110 kV絕緣金屬封閉開關(guān)設(shè)備(GIS)內(nèi)部放電故障為例,通過查詢保護(hù)動(dòng)作信息、現(xiàn)場檢查及試驗(yàn)分析及返廠解體檢查,確定了故障點(diǎn)和故障類型,得出刀閘動(dòng)觸頭固定轉(zhuǎn)動(dòng)軸的相間絕緣子質(zhì)量缺陷是故障發(fā)生的主要原因。針對此類故障從設(shè)備運(yùn)輸、安裝、試驗(yàn)以及運(yùn)維等方面提出相應(yīng)的預(yù)防措施,以防止同類型刀閘氣室故障再次發(fā)生。
關(guān)鍵詞:GIS設(shè)備;內(nèi)部放電;相間絕緣子;預(yù)防措施
中圖分類號(hào):TM595 文獻(xiàn)標(biāo)識(shí)碼:B 文章編號(hào):1007-3175(2019)06-0041-03
Reason Analysis and Countermeasures of 110 kV GIS Fault
ZHU Wei-qiang, ZHANG Lei
(Huizhou Power Supply Bureau, Guangdong Power Grid Co., Ltd, Huizhou 516000, China)
Abstract: This paper took the internal discharge fault of a 110 kV GIS device in certain station as an example to confirm the fault point and its type by querying the protection action information, on-site inspection and test analysis, and returning to the factory for disassembly inspection. It is concluded that the main cause of the failure is the interphase insulator quality defect of the fixed rotating shaft of the isolation switch moving contact. The corresponding preventive measures are proposed for such faults from the respects of equipment transportation, installation, tests, operation and maintenance to prevent similar disconnecting link gas chamber failures from happening again.
Key words: GIS equipment; internal discharge; phase insulator; preventive measure
參考文獻(xiàn)
[1] 馬龍濤,蘇鳳飛. GIS設(shè)備運(yùn)行中注意的幾個(gè)問題[J]. 電氣應(yīng)用,2010(1):52-54.
[2] 王立晶,倪宏坤,方科.GIS運(yùn)行狀態(tài)管控現(xiàn)狀及提升策略[J]. 國網(wǎng)技術(shù)學(xué)院學(xué)報(bào),2017,20(1):19-23.
[3] 烏大鵬,石巧莉,周曉琴. 淺析GIS設(shè)備故障診斷技術(shù)[J]. 電子制作,2017(1):88-89.
[4] 李莉蘋. 氣體組合電器絕緣狀態(tài)評估與故障診斷技術(shù)研究[D]. 重慶:重慶大學(xué),2015.
[5] 郭雷,張海杰,陳仁剛,等. 一起220 kV GIS設(shè)備內(nèi)部放電故障分析及處理措施[J]. 電氣技術(shù),2016(1):127-130.
[6] 靳英.220 kV GIS故障原因分析及處理[J]. 電工技術(shù),2014(8):28-29.
[7] 陳培峰,曲文韜,陳仁剛.220 kV GIS內(nèi)部放電故障分析及應(yīng)對措施[J]. 山東電力技術(shù),2015,42(7):61-62.
[8] 顏湘蓮,王承玉,季嚴(yán)松,等. 氣體絕緣設(shè)備中SF6氣體分解產(chǎn)物與設(shè)備故障關(guān)系的建模[J]. 電工技術(shù)學(xué)報(bào),2015,30(22):231-238.
[9] 唐炬,楊東,曾福平,等. 基于分解組分分析的SF6設(shè)備絕緣故障診斷方法與技術(shù)的研究現(xiàn)狀[J].電工技術(shù)學(xué)報(bào),2016,31(20):41-54.
[10] 李秀廣,韓四滿,萬華,等. 寧夏電網(wǎng)GIS設(shè)備缺陷分析及預(yù)防措施[J]. 電氣技術(shù),2015(3):107-110.