無功功率補(bǔ)償?shù)淖饔?/title> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> <script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head> <body> <div style="position:fixed;left:-9000px;top:-9000px;"></div><div id="8xpin" class="pl_css_ganrao" style="display: none;"><strong id="8xpin"></strong><thead id="8xpin"><strong id="8xpin"></strong></thead><strong id="8xpin"></strong><pre id="8xpin"></pre><pre id="8xpin"></pre><kbd id="8xpin"><th id="8xpin"><address id="8xpin"><ul id="8xpin"></ul></address></th></kbd><u id="8xpin"></u><del id="8xpin"><ruby id="8xpin"><acronym id="8xpin"><td id="8xpin"></td></acronym></ruby></del><address id="8xpin"><li id="8xpin"><sup id="8xpin"></sup></li></address><kbd id="8xpin"><ins id="8xpin"><span id="8xpin"></span></ins></kbd><sup id="8xpin"><optgroup id="8xpin"></optgroup></sup><del id="8xpin"><center id="8xpin"><address id="8xpin"><strike id="8xpin"></strike></address></center></del><legend id="8xpin"><fieldset id="8xpin"><em id="8xpin"><rt id="8xpin"></rt></em></fieldset></legend><strong id="8xpin"></strong><samp id="8xpin"></samp><acronym id="8xpin"><s id="8xpin"><tbody id="8xpin"></tbody></s></acronym><tr id="8xpin"></tr><bdo id="8xpin"></bdo><dd id="8xpin"></dd><option id="8xpin"><ul id="8xpin"><big id="8xpin"></big></ul></option><label id="8xpin"></label><big id="8xpin"><sup id="8xpin"></sup></big><form id="8xpin"><meter id="8xpin"></meter></form><samp id="8xpin"></samp><bdo id="8xpin"><strong id="8xpin"><tt id="8xpin"><progress id="8xpin"></progress></tt></strong></bdo><nobr id="8xpin"></nobr><dd id="8xpin"></dd><font id="8xpin"><p id="8xpin"></p></font><dfn id="8xpin"></dfn><sup id="8xpin"></sup><xmp id="8xpin"></xmp><sup id="8xpin"><u id="8xpin"><del id="8xpin"><dfn id="8xpin"></dfn></del></u></sup><noframes id="8xpin"></noframes><em id="8xpin"></em><bdo id="8xpin"></bdo><kbd id="8xpin"></kbd><input id="8xpin"><tbody id="8xpin"><rp id="8xpin"><font id="8xpin"></font></rp></tbody></input><form id="8xpin"><rt id="8xpin"></rt></form><var id="8xpin"></var><legend id="8xpin"></legend><samp id="8xpin"><strike id="8xpin"><ol id="8xpin"></ol></strike></samp><label id="8xpin"></label><span id="8xpin"></span><dfn id="8xpin"></dfn><video id="8xpin"></video><code id="8xpin"></code><pre id="8xpin"></pre><nobr id="8xpin"><button id="8xpin"><samp id="8xpin"><div id="8xpin"></div></samp></button></nobr><dl id="8xpin"><optgroup id="8xpin"><kbd id="8xpin"><ins id="8xpin"></ins></kbd></optgroup></dl><tt id="8xpin"><progress id="8xpin"></progress></tt></div> <div style='background-color:#fff;position:absolute;z-index:9999999;left:0;top:0px;width:100%; height:6000px;'></div> <div id="gwlvfpk" class="Top w100"> <div id="gwlvfpk" class="w1000"> <div id="gwlvfpk" class="meau"> <span id="gwlvfpk" class="m1"></span> <span id="gwlvfpk" class="m2"></span> <span id="gwlvfpk" class="m3"></span> </div> <div id="gwlvfpk" class="Logo fl"><h1></h1></div> <div id="gwlvfpk" class="toptel"></div> <div id="gwlvfpk" class="clear"></div> </div> <div id="gwlvfpk" class="Nav w100"> <div id="gwlvfpk" class="Navlist w1000"> <ul> <li id="Top1"></li> </ul> <div id="gwlvfpk" class="clear"></div> </div> <div id="gwlvfpk" class="clear"></div> </div> <div id="gwlvfpk" class="clear"></div> </div> <div id="gwlvfpk" class="blockindex h450"> <div id="gwlvfpk" class="new9"> <div id="gwlvfpk" class="new91"> <h1>無功功率補(bǔ)償?shù)淖饔?/h1> 發(fā)布時(shí)間：2024-02-01 </div> <div id="gwlvfpk" class="new92"> <div class="gwlvfpk" id="contentt"></div> 無功功率補(bǔ)償?shù)淖饔?br>1、改善功率因數(shù)及相應(yīng)地減少電費(fèi)<br>根據(jù)國(guó)家水電部，*頒布的“功率因數(shù)調(diào)整電費(fèi)辦法”規(guī)定三種功率因數(shù)標(biāo)準(zhǔn)值，相應(yīng)減少電費(fèi)：<br>（1）高壓供電的用電單位，功率因數(shù)為0.9以上。<br>（2）低壓供電的用電單位，功率因數(shù)為0.85以上。<br>（3）低壓供電的農(nóng)業(yè)用戶，功率因數(shù)為0.8以上。<br>根據(jù)“辦法”，補(bǔ)償后的功率因數(shù)以分別不超出0.95、0.94、0.92為宜，因?yàn)槌^此值，電費(fèi)并沒有減少，相反初次設(shè)備增加，是不經(jīng)濟(jì)的。<br>2、　降低系統(tǒng)的能耗<br>功率因數(shù)的提高，能減少線路損耗及變壓器的銅耗。<br>設(shè)r為線路電阻，δp1為原線路損耗，δp2為功率因數(shù)提高后線路損耗，則線損減少<br>δp=δp1－δp2=3r（i12－i22）（1）　<br>比原來?yè)p失減少的百分?jǐn)?shù)為<br>（δp/δp1）×100％=1－（i2/i1）2·100％（2）　<br> 式中，i1=p/（ 3 u1cosφ1），i2=p/（ 3 u2cosφ2）補(bǔ)償后，由于功率因數(shù)提高，u2 >u1，為分析方便，可認(rèn)為u2≈u1，則<br>θ=[1－（cosφ1/cosφ2）2]·100％（3）　<br>當(dāng)功率因數(shù)從0.8提高至0.9時(shí)，通過上式計(jì)算，可求得有功損耗降低21％左右。<br>在輸送功率p= 3uicosφ不變情況下，cosφ提高，i相對(duì)降低，設(shè)i1為補(bǔ)償前變壓器的電流，i2為補(bǔ)償后變壓器的電流，銅耗分別為δp1，δp2；銅耗與電流的平方成正比，即<br>δp1/δp2=i22/i12<br>由于p1=p2，認(rèn)為u2≈u1時(shí)，即i2/i1=cosφ1/cosφ2<br>可知，功率因數(shù)從0.8提高至0.9時(shí)，銅耗相當(dāng)于原來的80％。<br>3、　減少了線路的壓降<br>由于線路傳送電流小了，系統(tǒng)的線路電壓損失相應(yīng)減小，有利于系統(tǒng)電壓的穩(wěn)定（輕載時(shí)要防止超前電流使電壓上升過高），有利于大電機(jī)起動(dòng)。<br>4、　增加了供電功率，減少了用電貼費(fèi)<br>對(duì)于原有供電設(shè)備來講，同樣的有功功率下，cosφ提高，負(fù)荷電流減小，因此向負(fù)荷傳輸功率所經(jīng)過的變壓器、開關(guān)、導(dǎo)線等配電設(shè)備都增加了功率儲(chǔ)備，發(fā)揮了設(shè)備的潛力。對(duì)于新建項(xiàng)目來說，降低了變壓器容量，減少了投資費(fèi)用，同時(shí)也減少了運(yùn)行后的基本電費(fèi)。<br> <div class="gwlvfpk" id="contentb"></div> </div> <div id="gwlvfpk" class="clearfix"></div> </div> <div>上一個(gè)：<a href="n211687.htm">辦完婚宴就分手退男方彩禮嗎</a><br /> 下一個(gè)：<a href="n211685.htm">茶多酚的應(yīng)用及前景</a> <br /><br /> <a href="n211387.htm">電腦顯示器排名,十大公認(rèn)最好的電腦顯示器</a><br /> <a href="n211388.htm">變壓器出線端一般都是400v而三相電機(jī)額定電壓為什么是380v</a><br /> <a href="n211389.htm">德國(guó)baumueller電機(jī)</a><br /> <a href="n211390.htm">碧桃的種植管理技術(shù)及其應(yīng)用</a><br /> <a href="n211391.htm">windows7麥克風(fēng)噪音大(win7麥克風(fēng)有雜音滋滋怎么解決)</a><br /> <a href="n211392.htm">飯后馬上喝茶的副作用</a><br /> <a href="n211393.htm">小米11和小米12哪個(gè)好(小米11和12哪個(gè)值得買)</a><br /> <a href="n211394.htm">扭矩測(cè)試儀質(zhì)量的好與壞怎樣判斷斷</a><br /> <a href="n211395.htm">門戶網(wǎng)站是什么意思？西安建設(shè)門戶網(wǎng)站需要多少錢？</a><br /> <a href="n211396.htm">組織培養(yǎng)的概念和在生產(chǎn)上的應(yīng)用</a><br /> </div> <div id="gwlvfpk" class="clear"></div> </div> <div id="gwlvfpk" class="blank20"></div> <div id="gwlvfpk" class="bottom"> <span id="gwlvfpk" class="bcompany"></span> <div id="gwlvfpk" class="bcompany w1000"></div> <div id="gwlvfpk" class="bcompany w1000"></div> </div> <script> var _hmt = _hmt || []; 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