環(huán)保氣體環(huán)網(wǎng)柜微水含量的研究與探索
打開文本圖片集
Research and Exploration on the Micro-water Content of Environmental Protection GasInsulated Ring Main Units
LI Dege WANG Zhi CHEN Yun LI Zheyuan ZHAO Hui （ChinaElectric PowerResearch InstituteCo.，Ltd.）
Abstract： The SF6 gas insulated ring main unit has alarge scale and is widely used，making it diffcult to recover and treat the waste gas.To implement thenational“dualcarbon”goalsand green development strategy，we should graduallreduce the usage of SF6 gas （a greenhouse gas），and comprehensively promote energy conservation and emission reduction in the powergrid.It is inevitable to comprehensively apply environmental protection gasinsulatedring mainunits，whichadopt the technical routes of vacuum arc extinguishing and natural gas insulation （such as dry air and N2 ）.To ensure the longterm stable insulation performance of environmental protection gases，conducting effective micro-water detection and evaluation of environmental protection gas insulatedring main units basedonthecharacteristicsof switchgear has become atechnicaltopicthatatractsindustryconcern.Thepaperexplainsthe technicalindicators.Then，basedonrelevant literature reports，the paperpoints outthe main sources of micro waterinside the ring mainunitsandthecommonly used measurement techniques.Combined with the main processes curentlyadopted by various manufacturers for micro-water treatment，experimentalresearchiscarriedoutontwokeylinks：reducingmicro-watercausedbyheliumleak detection，and solving theproblemofsurface moisture evaporationofcomponentsduringlong-termuse.Finaly，thepaperproposes effective control measures forthe micro-watercontent of environmental protection gases under different environmental conditions suchas vacuuming，inflation time，drying timeand molecularsieves during theequipmentassembly.The micro-watercontrol measures recommended in the paper areefective and areof concernto relevant practitioners，which provides a reference for engineering practice.
Keywords： environmental protection gas insulated ring main units; micro water; measure; technology; control
0 引言
SF6氣體化學(xué)性質(zhì)穩(wěn)定，具有優(yōu)異的絕緣和滅弧性能，全球生產(chǎn)的SF氣體約 90% 用于電力行業(yè)，這其中的 80% 是用于開關(guān)設(shè)備"，包括中壓充氣式開關(guān)柜、環(huán)網(wǎng)柜、柱上開關(guān)；高壓斷路器、氣體絕緣金屬封閉組合電器等。（剩余8855字）