GIS設(shè)備同頻同相耐壓試驗(yàn)風(fēng)險(xiǎn)分析與抑制措施
楊新春，邱煒，黃昆，羅楊，田子山，張榮嶸
（國(guó)網(wǎng)成都供電公司，四川 成都 610000）
摘 要：檢查氣體絕緣金屬封閉開關(guān)(GIS) 設(shè)備在擴(kuò)建或大修后絕緣性能是否良好最有效的方式是現(xiàn)場(chǎng)交流耐壓試驗(yàn)。在GIS 設(shè)備同頻同相耐壓試驗(yàn)方法現(xiàn)場(chǎng)應(yīng)用的基礎(chǔ)上，分析了同頻同相耐壓試驗(yàn)過(guò)程中的主要風(fēng)險(xiǎn)點(diǎn)，并提出通過(guò)調(diào)整變電站運(yùn)行方式，采用X 射線可視化技術(shù)確保隔離開關(guān)可靠分閘，確認(rèn)加壓回路相別，以及采用特高頻或超聲波局部放電檢測(cè)方法監(jiān)視隔離開關(guān)絕緣狀態(tài)等措施來(lái)降低試驗(yàn)過(guò)程中的風(fēng)險(xiǎn)，取得了良好效果。
關(guān)鍵詞：氣體絕緣金屬封閉開關(guān)；交流耐壓試驗(yàn)；同頻同相；風(fēng)險(xiǎn)點(diǎn)分析；抑制措施
中圖分類號(hào)：TM591；TM855 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1007-3175(2017)02-0052-04
Risk Analysis and Suppression Measure of Same Frequency and Phase
Withstand Voltage Test of Gas Insulated Switchgear Equipment
YANG Xin-chun, QIU Wei, HUANG Kun, LUO Yang, TIAN Zi-shan, ZHANG Rong-rong
（State Grid Chengdu Power Supply Company, Chengdu 610000, China）
Abstract: Onsite alternating current withstand voltage test is the most effective way to verify the insulating property of gas insulated switchgear (GIS) equipment after extension or overhaul. On the basis of onsite application of same frequency and phase withstand voltage test of GIS equipment, this paper analyzed the main risk point in the process of same frequency and phase withstand voltage test. Transformer substation operation mode was adjusted and X-ray visualization technology was adopted to guarantee the disconnector tripping reliably and to affirm the pressing circuit phase. Ultrahigh frequency or ultrasonic partial discharge detection etc measures were used to monitor the insulation state of disconnector to reduce the risk in the test process with good results.
Key words: gas insulated switchgear; alternating current withstand voltage test; same frequency and phase; risk point analysis; suppression
measure
參考文獻(xiàn)
[1] DL/T 555—2004 氣體絕緣金屬封閉開關(guān)設(shè)備現(xiàn)場(chǎng)耐壓及絕緣試驗(yàn)導(dǎo)則[S].
[2] DL/T 617—2010 氣體絕緣金屬封閉開關(guān)設(shè)備技術(shù)條件[S].
[3] DL/T 618—2011 氣體絕緣金屬封閉開關(guān)設(shè)備現(xiàn)場(chǎng)交接試驗(yàn)規(guī)程[S].
[4] 印華，王謙，龍英凱. GIS同頻同相交流耐壓試驗(yàn)技術(shù)解析[J]. 智能電網(wǎng)，2015，3(7)：679-682.
