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标题: (状态检修) 技术对比，绝缘子污秽监测技术现状 [打印本页]
作者: jiang1113    时间: 2010-3-26 14:36
标题: (状态检修) 技术对比，绝缘子污秽监测技术现状
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt"><span lang="EN-US"><font face="Times New="New"  Roman">(</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">状态检修</span><span lang="EN-US"><font face="Times New="New"  Roman">) </font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">技术对比，绝缘子污秽监测技术现状</span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">目前针对绝缘子的污秽监测手段主要有三种：</span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  21pt"><span lang="EN-US"><font face="Times New="New"  Roman">1.</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">等值盐密法；</span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  21pt"><span lang="EN-US"><font face="Times New="New"  Roman">2.</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">泄漏电流法；</span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  21pt"><span lang="EN-US"><font face="Times New="New"  Roman">3.</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">利用激光传感器在线监测；</span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt; TEXT-INDENT: 21pt; mso-char-indent-count: 2.0"><span lang="EN-US"><?xml:namespace prefix = o ns = "urn:schemas-microsoft-comfficeffice" /><o:p><font face="Times New="New"  Roman">&nbsp;</font></o:p></span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt; TEXT-INDENT: 28pt; mso-char-indent-count: 2.0"><span style="FONT-SIZE: 14pt; FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">在此将三种监测方法作些技术对比，个人觉得利用激光传感器在线监测系统优于等值法（扫瓶子）和泄漏电流法。</span><span lang="EN-US" style="FONT-SIZE: 14pt"><o:p></o:p></span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  21pt"><span lang="EN-US"><font face="Times New="New"  Roman">1.</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">等值盐密法</span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  21pt; TEXT-INDENT: 21pt"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">★测量结果分散性较大</span><span lang="EN-US"><font face="Times New="New"  Roman">, </font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">很难合理确定测量周期。</span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  21pt; TEXT-INDENT: 21pt"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">★在拆卸和运输的过程中，污秽物质难免会因刮擦而部分损失，很难保障测量结果的准确性。</span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  21pt; TEXT-INDENT: 21pt"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">★是一种破坏性试验方法，无法对同一绝缘子的积污特性进行长期监测。很难得到饱和盐密值。</span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  21pt; TEXT-INDENT: 21pt"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">★无法测量实时盐密值，无法科学指导输变电设备的状态清洗工作。</span><font face="Times New="New"  Roman"> </font></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  21pt; TEXT-INDENT: 21pt"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">★需要投入大量的人力和物力。并且测量前一般对整条输电线路或整座变电站停电，从而带来很大的社会影响。</span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  21pt; TEXT-INDENT: 21pt"><span lang="EN-US"><o:p><font face="Times New="New"  Roman">&nbsp;</font></o:p></span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  21pt"><span lang="EN-US"><o:p><font face="Times New="New"  Roman">&nbsp;</font></o:p></span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  21pt"><span lang="EN-US"><font face="Times New="New"  Roman">2.</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">泄漏电流法；</span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  21pt; TEXT-INDENT: 21pt"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">★泄漏电流的大小不仅和污秽程度有关，而且和绝缘子的受潮程度有关，此外还和绝缘子的串长、几何形状等因素有关。如何根据测得的泄漏电流值评价绝缘子的污秽程度，如何确定泄漏电流报警的阀值等问题至今仍没有一个明确的结论。</span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  21pt; TEXT-INDENT: 21pt"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">★另外的一个问题是，只有在特定的气象条件下才能测到泄漏电流，在干旱少雨地区测泄漏电流的方法是不适用的，它仅适用于潮湿多雨的地区。</span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  21pt; TEXT-INDENT: 21pt"><span lang="EN-US"><o:p><font face="Times New="New"  Roman">&nbsp;</font></o:p></span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  21pt"><span lang="EN-US"><o:p><font face="Times New="New"  Roman">&nbsp;</font></o:p></span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  21pt"><span lang="EN-US"><font face="Times New="New"  Roman">3.</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">利用激光传感器在线监测；</span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  39pt"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">★无需停电监测，减少因为停电测量盐密而导致的电量损失；</span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  39pt"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">★采用实时在线的方式，避免因为人工测量而导致盐密值不准确；</span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  39pt"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">★改变传统</span><span lang="EN-US"><font face="Times New="New"  Roman">“</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">定时清扫</span><span lang="EN-US"><font face="Times New="New"  Roman">”</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">输变电设备的清扫模式，拟采取</span><span lang="EN-US"><font face="Times New="New"  Roman">“</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">状态清扫</span><span lang="EN-US"><font face="Times New="New"  Roman">”</font></span><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">输变电设备的</span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  18pt"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">清扫模式，避免污闪事故的发生；</span></p>
<p class="MsoNormal" style="MARGIN: 0cm="0cm"  0cm="0cm"  0pt="0pt"  39pt"><span style="FONT-FAMILY: 宋体; mso-ascii-font-family: 'Times New="New"  Roman'; mso-hansi-font-family: 'Times New="New"  Roman'">★获得饱和盐密，绘制各电网各地区的污区分布图，以期掌握各地区的积污规律。</span><span lang="EN-US"><font face="Times New="New"  Roman"> </font></span></p>
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