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document.getElementById("bdshell_js").src = "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： 2019-09-28 05:54:30</div> </div> <div class="1zlx7hpjjv5" id="daodu"><span>导读：</span>为避免电力变压器在运行中发生故障或出现非正常状态，会在电力变压器自身安装一种?；ぃ蔷褪羌痰绫；?。 </div> <p><span style="color: rgb(27, 27, 27); font-family: "microsoft yahei"; font-size: 16px;"> 为避免电力</span><a href="http://www.ywpw.cn/"><span style="color:#ff0000;"><span style="font-family: "microsoft yahei"; font-size: 16px;"><strong>变压器</strong></span></span></a><span style="color: rgb(27, 27, 27); font-family: "microsoft yahei"; font-size: 16px;">在运行中发生故障或出现非正常状态，会在电力变压器自身安装一种保护，那就是继电保护。电力变压器的继电?；な侵冈诘缌Ρ溲蛊鞯哪诓亢屯獠糠⑸收鲜?，由于电压、电流和油温等条件随之发生的变化，根据对这些突发变化进行发现、分析、判断，对电力变压器的故障性质和故障范围进行分析，并作出相对应的处理和反应。<br /> 电力变压器的继电?；な堑缌Ρ溲蛊髯晕冶；さ闹饕谌?，下面让我们一起来了解一下电力变压器的继电类型的三大?；ず托阅堋?/span><br style="color: rgb(27, 27, 27); font-family: "microsoft yahei"; font-size: 14px;" /> <div style="text-align: center;"> <span style="color: rgb(27, 27, 27); font-family: "microsoft yahei"; font-size: 16px;"><img alt="" src="/uploads/allimg/190928/1-1Z92Q35213508.jpg" style="width: 800px; height: 533px;" /></span></div> <span style="color: rgb(27, 27, 27); font-family: "microsoft yahei"; font-size: 16px;">　　1、过负荷保护：过负荷?；ぶ饕τ糜冢憾杂?.4MVA及以上的电力变压器，当数台并列运行或单先运行并作为其他负荷的备用电源时，应装设过负荷保护。其作用为对于自耦电力变压器或多绕组电力变压器，?；ぷ爸糜δ芊从踩谱榧案鞑嗟墓汉汕榭觥９汉杀；ぞ邮倍饔谛藕?。</span><br style="color: rgb(27, 27, 27); font-family: "microsoft yahei"; font-size: 14px;" /> <br style="color: rgb(27, 27, 27); font-family: "microsoft yahei"; font-size: 14px;" /> <span style="color: rgb(27, 27, 27); font-family: "microsoft yahei"; font-size: 16px;">　　2、瓦斯?；ぃ喝萘课?00KVA及以上的<a href="http://www.ywpw.cn/yqsbyq/">油浸式电力变压器</a>，均应装设瓦斯保护。当油箱内部故障产生轻微瓦斯或油面下降时，保护装置应瞬时动作于信号;当产生大量瓦斯时，瓦斯?；びΧ饔诙峡缌Ρ溲蛊鞲鞯缭床舛下菲?。对于高压侧未装设断路器的线路一电力变压器组，未采取使瓦斯?；つ芮谐缌Ρ溲蛊髂诓抗收系募际醮胧┦?，瓦斯?；た山龆饔谛藕?。对于容量为400KVA以上的车间内<a href="http://www.ywpw.cn/yqsbyq/">油浸式电力变压器</a>，也应装设瓦斯?；?。</span><br style="color: rgb(27, 27, 27); font-family: "microsoft yahei"; font-size: 14px;" /> <br style="color: rgb(27, 27, 27); font-family: "microsoft yahei"; font-size: 14px;" /> <span style="color: rgb(27, 27, 27); font-family: "microsoft yahei"; font-size: 16px;">　　3、相间短路的后备保护：过电流?；ひ擞糜诮笛沟缌?/span><a href="http://www.ywpw.cn/"><span style="color:#ff0000;"><span style="font-family: "microsoft yahei"; font-size: 16px;"><strong>变压器</strong></span></span></a><span style="color: rgb(27, 27, 27); font-family: "microsoft yahei"; font-size: 16px;">，复合电压起动的过电流保护宜用升压电力变压器，系统联络电力变压器和采用过电流保护不满足灵敏度要求的降压电力变压器，63MVA及以上的升压电力变压器，采用负序电流?；ぜ暗ハ嗍降偷缪蛊鸲墓缌鞅；ざ杂诖笮蜕沟缌Ρ溲蛊骰蛳低沉绲缌Ρ溲蛊鳎懔槊舳纫?，可采用阻抗保护。其作用是用来防御外部相间短路引起的过电流，并作为瓦斯?；ず妥莶疃；?或电流速断?；?的后备.?；ぱ邮倍饔谔下菲?。</span></p> <div class="1zlx7hpjjv5" id="prevnext"> <span>上一篇：<a href="/cpzs/2095.html">非晶合金干式变压器的特点和性能</a> </span>????? <span>下一篇：<a href="/cpzs/2097.html">干式变压器冷却风机的使用条件和安装维护</a></span> </div> 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