一二次深融柱上開關(guān)斷口絕緣試驗(yàn)方法研究
趙贏峰，劉彬，呂瑋，羅運(yùn)祥，孫超，石巍，方太勛
(南京南瑞繼保電氣有限公司，江蘇 南京 211100)
摘 要：斷口絕緣試驗(yàn)是一二次深融柱上開關(guān)(柱開)的基礎(chǔ)試驗(yàn)項(xiàng)目之一。根據(jù)試品電容和雜散電容分布拓?fù)浍@取機(jī)構(gòu)箱殼體理論電位，開展了機(jī)構(gòu)箱殼體電位和絕緣墊閃絡(luò)電壓測(cè)試，并采用改進(jìn)措施進(jìn)行斷口絕緣測(cè)試。結(jié)果表明：進(jìn)線側(cè)加壓時(shí)，機(jī)構(gòu)箱殼體電位大于出線側(cè)加壓工況，印證了斷口試驗(yàn)擊穿現(xiàn)象；機(jī)構(gòu)箱殼體電位實(shí)測(cè)值和理論值相近；絕緣墊在點(diǎn)臟污時(shí)絕緣性能最差，閃絡(luò)電壓為干凈狀態(tài)的37%；根據(jù)絕緣墊厚度和臟污程度調(diào)整機(jī)構(gòu)箱放置位置，斷口絕緣試驗(yàn)通過。一二次深融柱開斷口絕緣試驗(yàn)時(shí)，需關(guān)注機(jī)構(gòu)箱殼體電位，防止殼體對(duì)地放電干擾試驗(yàn)結(jié)果。
關(guān)鍵詞： 深融柱上開關(guān)；斷口絕緣；機(jī)構(gòu)箱殼體；電位；雜散電容；閃絡(luò)
中圖分類號(hào)：TM564 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1007-3175(2024)07-0068-05
Research on Test Method of the Fracture Insulation on the Primary and
Secondary Deep Melt Pole-Mounted Switch
ZHAO Ying-feng, LIU Bin, LYU Wei, LUO Yun-xiang, SUN Chao, SHI Wei, FANG Tai-xun
（NR Electric Co., Ltd, Nanjing 211100, China）
Abstract: The fracture insulation test is one of the basic test items of the primary and secondary deep melt pole-mounted switch (pole opening). In this paper, the theoretical potential of the mechanism box shell is obtained according to the distribution topology of sample capacitance and stray capacitance, and the flashover voltage test of the mechanism box shell and the insulating pad is carried out, and the fracture insulation test is carried out by using improved measures. The results show that, when the inlet side is pressurized, the potential of the casing of the mechanism box shell is greater than that of the outlet side, which confirms the breakdown phenomenon of the fracture test.The measured potential value of the mechanism box shell is similar to the theoretical value. The insulation pad has the worst insulation performance when it is dirty, and the flashover voltage is 37% of the clean state. According to the thickness of the insulation pad and the degree of dirt to adjust the placement position of the mechanism box shell, the fracture insulation test passed. In the fracture insulation test of the of the primary and secondary deep melt pole-mounted switch, it is necessary to pay attention to the potential of the shell of the mechanism box shell to prevent the shell from interfering with the test results by the discharge to the ground.
Key words: deep melt pole-mounted switch; fracture insulation; mechanism box shell; potential; stray capacitance; flashover
參考文獻(xiàn)
[1] 李澍森，孫志英．12 kV 配電柱上開關(guān)一二次融合關(guān)鍵技術(shù)之交流電壓傳感器[J]．高電壓技術(shù)，2019，45(9) ：2818-2826．
[2] 戴冬云，顧曉東，付魯軍，等．一二次深度融合柱上開關(guān)用 EVT 就地采集模塊的研究[J]．高壓電器，2023，59(9) ：301-311．
[3] 王東芳， 陶飛達(dá)， 黃智鵬，等．一二次融合柱上開關(guān)控制可靠性模型與優(yōu)化設(shè)計(jì)[J]．高壓電器，2023，59(3) ：86-92．
[4] 張小勇，賈濤，王韻，等．特高壓電器設(shè)備絕緣試驗(yàn)技術(shù)研究[J]．高壓電器，2007，43(2) ：106-108．
[5] 李華良，孫敏，龐明明，等．中壓交流金屬封閉開關(guān)設(shè)備絕緣試驗(yàn)中難點(diǎn)問題探析[J]．電工電氣，2019(10) ：61-66．
[6] 錢立驍，陳慎言．12～24 kV 氮?dú)饨^緣環(huán)網(wǎng)柜的研制[J]．高電壓技術(shù)，2014，40(12) ：3717-3724．
[7] 趙贏峰，呂瑋，楊兵，等．535 kV 混合式直流斷路器端間操作沖擊電壓試驗(yàn)研究[J]．高電壓技術(shù)，2020，46(8) ：2684-2691．
[8] 王文杰，趙贏峰，許元震，等．500 kV 快速開關(guān)型故障限流器的罐式快速開關(guān)[J]．高電壓技術(shù)，2023，49(2) ：803-811．
[9] 呂瑋，劉云飛，周啟文，等．多斷口快速開關(guān)型高壓故障限流器[J]．電力系統(tǒng)自動(dòng)化，2019，43(23) ：234-239．
[10] 李興旺，劉軍，劉夢(mèng)娜．一起氣體絕緣金屬封閉開關(guān)設(shè)備懸浮放電缺陷分析[J]．高壓電器，2015，51(10) ：205-208．
[11] 王克峰， 孫慶生， 江和順，等．一起 500 kV 變壓器穩(wěn)釘懸浮放電故障的診斷與分析[J]．高壓電器，2012，48(3) ：95-98．
[12] 楊勇，曹俊平，江航，等．110 kV 交聯(lián)聚乙烯電纜終端懸浮電位缺陷試驗(yàn)[J]．絕緣材料，2019，52(5) ：59-64．
