中国电力科技论坛
标题:
[分享]防跳继电器的工作原理
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作者:
haozheng98
时间:
2009-7-23 16:58
标题:
[分享]防跳继电器的工作原理
<p> 35kV<span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New" Roman'; mso-hansi-font-family: 'Times New="New" Roman'">及以上的断路器，常采用“电气防跳”。此种防跳<a href="http://www.relay88.com/" target="_blank">继电器</a>有两个线圈，一个是供启动用的电流线圈，接在跳闸回路中；另一个是自保持用的电压线圈，通过本身的常开触点（</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times" New="New" Roman">TBJ1</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New" Roman'; mso-hansi-font-family: 'Times New="New" Roman'">）接入合闸回路。</span><br/></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm" 0cm="0cm" 0pt"><span style="FONT-SIZE: small"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New" Roman'; mso-hansi-font-family: 'Times New="New" Roman'"> 当合闸过程中，如正遇永久性故障，因而保护出口<a href="http://www.relay88.com/" target="_blank">继电器</a>触点</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times" New="New" Roman">BCJ</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New" Roman'; mso-hansi-font-family: 'Times New="New" Roman'">闭合，断路器跳闸，并起动防跳<a href="http://www.relay88.com/" target="_blank">继电器</a></span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times" New="New" Roman">TBJ</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New" Roman'; mso-hansi-font-family: 'Times New="New" Roman'">。若控制开尖手柄（合闸按钮）未复归或其触点被卡住，以及自动合闸装置的合闸触点被卡住（没有分开），因为防跳<a href="http://www.relay88.com/" target="_blank">继电器</a>的触点</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times" New="New" Roman">TBJ1</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New" Roman'; mso-hansi-font-family: 'Times New="New" Roman'">已经闭合，致使</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times" New="New" Roman">TBJ</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New" Roman'; mso-hansi-font-family: 'Times New="New" Roman'">的电压线圈带电，起自保持的作用。另外，触点</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times" New="New" Roman">TBJ2</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New" Roman'; mso-hansi-font-family: 'Times New="New" Roman'">业已断开，能幸免合闸线圈</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times" New="New" Roman">HQ</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New" Roman'; mso-hansi-font-family: 'Times New="New" Roman'">再次导通，也就防止了断路器发生“跳跃”。</span></span><br/></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm" 0cm="0cm" 0pt"><span style="FONT-SIZE: small"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New" Roman'; mso-hansi-font-family: 'Times New="New" Roman'"> 触点</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times" New="New" Roman">TBJ3</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New" Roman'; mso-hansi-font-family: 'Times New="New" Roman'">（与</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times" New="New" Roman">BCJ</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New" Roman'; mso-hansi-font-family: 'Times New="New" Roman'">的触点并在一起）的作用，是为了防止保护出口<a href="http://www.relay88.com/" target="_blank">继电器</a></span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times" New="New" Roman">BCJ</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New" Roman'; mso-hansi-font-family: 'Times New="New" Roman'">的触点被烧坏。由于自动跳闸时，</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times" New="New" Roman">BCJ</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New" Roman'; mso-hansi-font-family: 'Times New="New" Roman'">的触点也许较辅助触点</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times" New="New" Roman">QF2</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New" Roman'; mso-hansi-font-family: 'Times New="New" Roman'">（串在跳闸线圈</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times" New="New" Roman">TQ</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New" Roman'; mso-hansi-font-family: 'Times New="New" Roman'">前的断路器常开辅助触点）先断开，以致被电弧烧坏。</span></span></p><br/>
<p class="MsoNormal" style="MARGIN: 0cm="0cm" 0cm="0cm" 0pt"><span style="FONT-SIZE: small"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New" Roman'; mso-hansi-font-family: 'Times New="New" Roman'"> 因为</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times" New="New" Roman">TBJ3</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New" Roman'; mso-hansi-font-family: 'Times New="New" Roman'">与它并联，即使</span><span lang="EN-US"><span style="FONT-FAMILY: Times="Times" New="New" Roman">BCJ</span></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New" Roman'; mso-hansi-font-family: 'Times New="New" Roman'">的触点先断，也不会被烧坏，而且还有跳闸出口存在。</span></span></p>
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