Project_PrincipleOverview_G_YunNan_2025/ModeDisplay/Assets/StreamingAssets/SubTitles/原理/500kV隔离开关-机械特性-old.srt

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GW12型500千伏隔离刀闸

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是用在户外高压配电设备线路上

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配合断路器

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用于供线路在有电压

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无负载时开合电路之用

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它由三套独立的系统

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组成三相线路的开合

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可单体结构的开关

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也可三级联动控制

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控制灵活

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它的进出线装设在两端绝缘子上端

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分为用于电能转换为机械能的操作机构

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和用于分合闸的执行机构

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触头设有前端引弧装置

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防止破坏触头

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配备过中弹簧

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可实现快速开合

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并能锁紧

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防止大电流发热现象

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触头和绝缘套筒之间轮配有均压环

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可让活动触头间电压分布均匀

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减少了放电的可能性

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两端均装设接地开关

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可单独控制

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也可一起联动控制

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接地明显

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方便线路检修的同时还增加了安全性

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合闸时

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电机运转

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将电能转换为数轴的旋转

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带动旋转瓷瓶旋转

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迫使大臂做切线运动

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经齿盘拉伸平直二臂

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舒展向静触头运动

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首先到达的是尖端引弧

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通过引弧

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保护动触头安全接触静触头

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此时大臂触头压缩二臂触杆

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实现夹紧运动

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分闸时

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只需让电机反转

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大臂触头释放二臂触杆

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在弹簧作用下

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触头松开

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在机械能和过半弹簧的能量下

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迅速受缩

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直到大臂和二臂竖直完成

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当线路需要检修或者冷储备时

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我们可以将接地刀闸合闸

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接地系统的操作机构电机运转

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带动数轴运转

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经连杆带动接地大臂做切线运动

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经齿轮带动二臂伸展

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期间大臂内部弹簧储能

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直到触头插入静触筒位置

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可靠明显的接地系统

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提升了我们倒闸操作的严谨性和安全性

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利于我们对高电压的控制和维护

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伸缩式结构

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让使我们的空间利用率大大提高

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其具有开断、关合小电感、电容电流的优势

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广范应用于500千伏线路及以上线路

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以上就是500千伏隔离刀闸的构造和工作原理