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"http://news.share.baidu.com/static/js/shell_v2.js?cdnversion=" + new Date().getHours(); </script>  </div> <div id="1zlx7hpjjv5" class="right">文章来源:<a href="">北京创联汇通电气</a> ????? 发布时间： 2023-10-24 15:30:37</div> </div> <div class="1zlx7hpjjv5" id="daodu"><span>导读：</span>干式变压器的正常工作条件是过载、外部短路引起的过流、外部接地短路引起的中性点过电压、油箱泄漏引起的油位下降或冷却系统故障引起的温升。此外，大容量干式变压器由于其额定工作磁通密度高，与电压频率比成正比，在过电压或低频运行时，可能导致干式变压器过励磁故障。鉴于上述情况，大型干式变压器一般采用以下?；し绞? </div> <p><p>干式变压器的正常工作条件是过载、外部短路引起的过流、外部接地短路引起的中性点过电压、油箱泄漏引起的油位下降或冷却系统故障引起的温升。此外，大容量干式变压器由于其额定工作磁通密度高，与电压频率比成正比，在过电压或低频运行时，可能导致干式变压器过励磁故障。鉴于上述情况，大型干式变压器一般采用以下?；し绞剑?/p><p><br/></p><p><img src="/static/upload/image/20231024/1698133514415432.jpg" alt="5251042277.jpg"/></p><p>一、气体?；ぃ罕；じ墒奖溲蛊髂诓慷搪泛陀臀唤档汀?/p><p>二、差动?；?、电流速断保护：?；じ墒奖溲蛊魅谱榛虺鱿叩南嗉涠搪?、大接地电流系统的接地短路和绕组匝间短路。</p><p>三.过流?；ぃ罕；ね獠肯嗉涠搪?，作为气体?；ず筒疃；?或电流速断?；?的后备保护。</p><p>四.零序电流保护：?；ご蠼拥氐缌飨低惩獠康ハ嘟拥囟搪贰?/p><p>五.过载?；ぃ憾猿乒乇；ぶ蛔饔糜谛藕?。</p><p>六.过励磁保护：?；じ墒奖溲蛊鞴挪怀市砑?。</p><p>干式变压器的气体?；し从沉烁墒奖溲蛊饔拖涞母髦止收虾陀臀唤档?。车间0.8毫伏及以上油浸变压器和0.4毫伏及以上油浸变压器应安装气体保护。当油箱中的故障引起轻微的气体或油位下降时，应立即根据信号采取行动；当产生大量气体时，应采取措施断开干式变压器各侧的断路器。带负荷调压的<a href="http://www.ywpw.cn/">油浸式变压器</a>调压安装也应安装气体保护</p><p><br/></p></p> <div class="1zlx7hpjjv5" id="prevnext"> <span>上一篇：<a href="/cpzs/8850.html">自耦变压器</a> </span>????? <span>下一篇：<a href="/cpzs/8852.html">讲解干式变压器外壳防护等级</a></span> </div> </div> </div>   <div id="1zlx7hpjjv5" class="sub_right"> <div id="1zlx7hpjjv5" class="listcon"> <h3>热点关注</h3> <ul> <li><a href='/cpzs/9553.html' title='MSCLA 低压无功自动补偿装置：低压配电的 “精准节能” 特种柜'>MSCLA 低压无功自动补偿装置：低压配电的 “精准节能” 特种柜</a></li> <li><a href='/cpzs/9552.html' title='PK 系列微机?；げ饪仄粒旱缌ο低车?“精准?；?+ 智能测控” 特种柜'>PK 系列微机?；げ饪仄粒旱缌ο低车?“精准保护 + 智能测控” 特种柜</a></li> <li><a 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