ï»?!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3c.org/TR/1999/REC-html401-19991224/loose.dtd"> 潍坊发电机出¿UŸï¼šæŸ´æÑa发电机组òq¶è”˜qè¡Œçš„动态稳定性概念_柴æÑa发电机_中动发电机出¿U?/title> <script>var murl="list.asp?classid=1";</script> <script src="/lib/js/mobile.js"></script> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> </head> <body> <div style="position:fixed;left:-9000px;top:-9000px;"><listing id="zbvnx"><rp id="zbvnx"><cite id="zbvnx"><strike id="zbvnx"></strike></cite></rp></listing><var id="zbvnx"><video id="zbvnx"><mark id="zbvnx"><em id="zbvnx"></em></mark></video></var><sub id="zbvnx"></sub><delect id="zbvnx"></delect><ruby id="zbvnx"><sub id="zbvnx"></sub></ruby><delect id="zbvnx"><track id="zbvnx"></track></delect><output id="zbvnx"><address id="zbvnx"></address></output><nobr id="zbvnx"><ol id="zbvnx"></ol></nobr><track id="zbvnx"></track><meter id="zbvnx"><rp id="zbvnx"></rp></meter><em 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来源åQšhttp://www.souxuehui.com 日期åQ?018-04-19 09:52:15</p> </div> <div class="article_cont_box"><p style="padding: 0px;font-family: 宋体;font-size: 13px;line-height: 24px;text-indent: 0;white-space: normal;text-align: justify"><span style="font-family: 'Times New Roman';font-size: 14px">      静态稳定只是发甉|œºòq¶è”˜qè¡Œçš„必要条ä»Óž¼Œ˜q˜ä¸èƒ½è¯´æ˜Žç³»¾lŸåœ¨é­å—急剧扰动时保持同步运行的能力ã€?a href="http://www.souxuehui.com" target="_blank" title="潍坊发电机出¿U?>潍坊发电机出¿U?/a>以电¾|‘发生短路äؓ例来说明˜q™ä¸€é—®é¢˜ã€‚当ç”늽‘发生短èµ\的时候,各发甉|œºçš„功角特性及其输出功率都会发生突然变化。比如在母线附近发生短èµ\åQŒæ¯¾U¿ç”µåŽ‹æŽ¥˜q‘于é›Óž¼Œå‘电机间ž®±å®Œå…¨å¤±åŽ»è”¾pÕd’Œå½±å“ã€‚由于柴æ²ÒŽœº</span><span style="text-decoration: none; font-family: 'Times New Roman'; font-size: 14px;">调速器</span><span style="font-family: 'Times New Roman';font-size: 14px">å…ähœ‰ä¸€å®šæƒ¯æ€§ï¼ŒåŽŸåŠ¨æœºåŠŸçŽ‡åƈ不会立即改变åQŒå„发电æœø™{子在柴æÑa机剩余功率的作用下被加速(也可能减速)åQŒæ¯å°æœº¾l„的加速情况取决于该机¾l„的机械惯性、电气特性、短路前的运行参敎ͼŒä»¥åŠçŸ­èµ\é˜ÀLŠ—和短路持¾l­æ—¶é—´ã€‚因此,在短路被切除以后åQŒä¸ä½†å„发电æœø™{子的相对位置发生了变化,而且转速也不相一è‡ß_¼Œå‘电æœø™{子能否经˜q‡ä¸€å®šçš„相对摆动恢复同步˜qè¡ŒåQŒå°±è¦çœ‹å„机¾l„所å…ähœ‰çš„动能以及柴æ²ÒŽœºå‰©ä½™åŠ›çŸ©çš„大ž®å’Œæ–¹å‘了。äؓ了定性地说明问题åQŒåªç›¸å¯¹åœ°çœ‹æŸä¸€å°å‘甉|œºè½¬å­çš„摆动过½E‹ï¼Œè€Œä¸è€ƒè™‘其他机组动态过½E‹çš„影响ã€?/span></p><p style="padding: 0px;font-family: 宋体;font-size: 13px;line-height: 24px;white-space: normal;text-align: justify;text-indent: 28px"><span style="font-family: 'Times New Roman';font-size: 19px"><span style="font-size: 14px">假定在短路被切除以后åQŒæŸå°å‘甉|œºå…ähœ‰</span><span style="font-family: 宋体;font-size: 14px">功角ç‰ÒŽ€§ï¼Œä¸”此时发甉|œºçš„功角äؓ</span><span style="font-size: 14px">θ</span></span><sub><span style="font-family: 'Times New Roman';font-size: 14px;vertical-align: sub">a</span></sub><span style="font-family: 'Times New Roman';font-size: 14px">åQŒåƈ假定此刻发电æœø™{子和ç”늽‘的电压矢量具有相同的转速,即相寚w€Ÿåº¦</span><span style="font-family: 'Times New Roman';font-size: 14px">v</span><span style="font-family: 'Times New Roman';font-size: 19px"><span style="font-size: 14px">为零。则在柴æ²ÒŽœºå‰©ä½™åŠŸçŽ‡çš„作用下åQŒå‘甉|œºè½¬å­ç”?/span><span style="font-size: 14px">θ</span></span><sub><span style="font-family: 'Times New Roman';font-size: 14px;vertical-align: sub">a</span></sub><span style="font-family: 'Times New Roman';font-size: 19px"><span style="font-size: 14px">被加速,</span><span style="font-size: 14px">θ</span><span style="font-family: 宋体;font-size: 14px">角逐渐增大åQŒåœ¨åˆ°è¾¾</span></span><span style="font-family: 'Times New Roman';font-size: 14px">b</span><span style="font-family: 'Times New Roman';font-size: 14px">点以前,柴æÑaæœø™{矩æ€ÀL˜¯å¤§äºŽå‘电æœø™{矩,加速过½E‹ä¸€ç›´è¦å»¶ç®‹åˆ?/span><span style="font-family: 'Times New Roman';font-size: 14px">b</span><span style="font-family: 'Times New Roman';font-size: 19px"><span style="font-size: 14px">点äؓ止。当</span><span style="font-size: 14px">θ</span></span><span style="font-family: 'Times New Roman';font-size: 14px">=</span><span style="font-family: 'Times New Roman';font-size: 14px">θ</span><sub><span style="font-family: 'Times New Roman';font-size: 14px;vertical-align: sub">b</span></sub><span style="font-family: 'Times New Roman';font-size: 14px">æ—Óž¼Œå‘电æœø™¾“出功率和柴æÑa机功率相òqŒ™¡¡åQŒå‰©ä½™è{矩äؓé›Óž¼Œç›¸å¯¹è½¬é€?/span><span style="font-family: 'Times New Roman';font-size: 14px">v</span><span style="font-family: 'Times New Roman';font-size: 14px">不再增加而达最大倹{€‚由于此时发甉|œºè½¬å­çš„è{速大于电压矢量的转速,发电æœø™{子将借助惯性越˜q?/span><span style="font-family: 'Times New Roman';font-size: 14px"> b </span><span style="font-family: 'Times New Roman';font-size: 19px"><span style="font-size: 14px">点,¾l§ç®‹å¢žå¤§</span><span style="font-size: 14px">θ</span><span style="font-family: 宋体;font-size: 14px">角,但是剩余功率改变了符åøP¼Œå‘电æœø™{子开始减é€?/span></span><span style="font-family: 'Times New Roman';font-size: 14px">åQ?/span><span style="font-family: 'Times New Roman';font-size: 19px"><span style="font-size: 14px">直到</span><span style="font-size: 14px">c</span><span style="font-family: 宋体;font-size: 14px">点,发电机的相对速度</span></span><span style="font-family: 'Times New Roman';font-size: 14px">v</span><span style="font-family: 'Times New Roman';font-size: 19px"><span style="font-size: 14px">为零åQ?/span><span style="font-size: 14px">θ</span><span style="font-family: 宋体;font-size: 14px">角达最大å€û|¼Œåœ¨å‰©ä½™è{矩的作用下,转子开始了相反的运动过½E‹ã€‚发甉|œºåœ¨åŠ é€Ÿè¿‡½E‹ä¸­æ‰€èŽ·å¾—的动能可用加速面¿U?/span><span style="font-size: 14px">a'ab</span><span style="font-family: 宋体;font-size: 14px">表示åQŒåœ¨å‡é€Ÿè¿‡½E‹ä¸­æ‰€æ¶ˆè€—çš„</span></span><span style="font-family: 'Times New Roman';font-size: 14px">åŠ?/span><span style="font-family: 'Times New Roman';font-size: 19px"><span style="font-size: 14px">能可用减速面¿U?/span><span style="font-size: 14px">bcc'</span><span style="font-family: 宋体;font-size: 14px">表示åQŒæ ¹æ®èƒ½é‡å®ˆæ’原则,加速面¿U¯å’Œå‡é€Ÿé¢¿U¯åº”该相½{‰ã€‚很昄¡„¶åQŒå‡é€?/span></span><span style="font-family: 'Times New Roman';font-size: 14px">é?/span><span style="font-family: 'Times New Roman';font-size: 19px"><span style="font-size: 14px">¿U¯çš„最大å€égؓ</span><span style="font-size: 14px">bcb'b</span><span style="font-family: 宋体;font-size: 14px">åQŒå¦‚果加速面¿U¯å°äºŽè¿™ä¸€æœ€å¤§å€?/span><span style="font-family: 宋体;font-size: 14px">åQŒåˆ™å‘电æœø™{子在é˜Õd°¼å› ç´ çš„作用下åQŒç»˜q‡è‹¥òq²æ‘†åŠ¨ä¹‹åŽï¼Œä¾¿å¯½E›_®šåœ?/span><span style="font-size: 14px">6</span><span style="font-family: 宋体;font-size: 14px">点,说明¾pȝ»Ÿ¾lè¿‡çŸ­èµ\˜q™ä¸€æ‰°åŠ¨åŽï¼Œå…ähœ‰åŠ?/span></span><span style="font-family: 'Times New Roman';font-size: 14px">æ€?/span><span style="font-family: 'Times New Roman';font-size: 19px"><span style="font-size: 14px">½E›_®šæ€§ï¼›å¦‚果加速面¿U¯å¤§äº?/span><span style="font-size: 14px">bcb'b</span><span style="font-family: 宋体;font-size: 14px">åQŒåˆ™å‘电æœø™{子的˜qåŠ¨ž®†è¶Š˜q?/span><span style="font-size: 14px">6'</span><span style="font-family: 宋体;font-size: 14px">点,柴æÑa机的剩余转矩再次改变½W¦å·åQŒä‹É发电æœø™{子进一步加速,直至失去同步åQŒå› æ­¤ç³»¾lŸä¸å…·å¤‡åŠ¨æ€ç¨³å®šæ€§ã€?/span></span></p><p style="padding: 0px;font-family: 宋体;font-size: 13px;line-height: 24px;text-indent: 0;white-space: normal;text-align: justify"><span style="font-family: 'Times New Roman';font-size: 14px">      在系¾lŸç»å—其他较大扰动的时候,也会出现¾cÖM¼¼çš„情况和问题。例如,机组òq¶èžR时如果投入的频差˜q‡é«˜æˆ–投入误差角较大åQ?/span><span style="text-decoration:underline;"><span style="font-family: 'Times New Roman';font-size: 19px"><span style="font-size: 14px">发电æœ?/span></span></span><span style="font-family: 'Times New Roman';font-size: 14px">转子在柴æ²ÒŽœºå‰©ä½™åŠŸçŽ‡ä½œç”¨ä¸‹ï¼Œä¹Ÿå°†å‡ºçŽ°ä¸Šè¿°åŠ é€Ÿã€å‡é€Ÿçš„摇摆˜q‡ç¨‹åQŒåœ¨å‡é€Ÿé¢¿U¯ä¸èƒ½å’ŒåŠ é€Ÿé¢¿U¯ç›¸æŠ‰|¶ˆçš„情况下åQŒåƈ联机¾l„也会失åŽÕdŠ¨æ€ç¨³å®šæ€§ã€‚当遇到大功率异步电动机启动、åƈ联机¾l„突然解列等情况åQŒåŒæ ·ä¼šäº§ç”Ÿòq¶è”</span><span style="font-size: 14px">柴æÑa</span><span style="font-family: 'Times New Roman';font-size: 14px">发电æœ?/span><span style="font-family: 'Times New Roman';font-size: 14px">¾l?/span><span style="font-family: 'Times New Roman';font-size: 14px">动态稳定性问题ã€?/span></p><p style="padding: 0px;font-family: 宋体;font-size: 13px;line-height: 24px;text-indent: 0;white-space: normal;text-align: justify"><span style="font-family: 'Times New Roman';font-size: 14px">      对于柴æÑa机电站来è¯ß_¼Œç”׃ºŽç”늫™çš„容量较ž®ï¼Œä¸”单台发甉|œºåŠŸçŽ‡å’Œç”µç«™åŠŸçŽ‡æ¯”较接˜q‘,在动态过½E‹ä¸­åQŒæ¯¾U¿ç”µåŽ‹ä¹Ÿæ˜¯è¦å‰§çƒˆå˜åŒ–的,因此åQŒåŠ¨æ€ç¨³å®šæ€§åˆ†æžï¼Œé€šå¸¸è¦è®¡½Ž—每台机¾l„è{子的˜qåŠ¨æƒ…况以及各è{å­?/span><span style="font-family: 'Times New Roman';font-size: 14px">é—?/span><span style="font-family: 'Times New Roman';font-size: 14px">的相对运动。此外,多数柴æÑa机电站都å…ähœ‰å¯ä¸Žç”늫™å®šw‡ç›¸æ¯”拟的异步ç”?/span><span style="font-family: 'Times New Roman';font-size: 14px">åŠ?/span><span style="font-family: 'Times New Roman';font-size: 14px">æœø™´Ÿè½½ï¼Œç”׃ºŽå¼‚步电动机的转矩与电压的òqÏx–¹æˆæ­£æ¯”,当母¾U¿ç”µåŽ‹é™ä½Žæ—¶åQŒè{矩急剧下降åQŒå¼‚步电动机被迅速减速,甚至停è{åQŒè¿™åˆå¤§å¤§å¢žåŠ äº†ç”µåŠ¨æœÞZ»Žç”늽‘吸取的功率,从而反˜q‡æ¥å½±å“å‘电机的½E›_®šæ€§ã€‚因此,<a href="http://www.souxuehui.com" target="_blank" title="潍坊发电机出¿U?>潍坊发电机出¿U?/a>在分析发甉|œºåŠ¨æ€ç¨³å®šæ€§çš„时候,˜q˜å¿…™åÕdŒæ—¶è€ƒè™‘电动机(卌™´Ÿè½½ï¼‰çš„稳定性。可见动态稳定性的计算是比较复杂的åQŒåªæœ‰é‚£äº›å¯¹ä¾›ç”µè¦æ±‚特别高的柴æÑa机电站,才要求对动态稳定性做å‡ø™¯„ä»—÷€‚由于大电力¾pȝ»Ÿå…³äºŽåŠ¨æ€ç¨³å®šæ€§çš„计算æ–ÒŽ³•å·²æœ‰å¾ˆå¤šæ–‡çŒ®èµ„æ–™åQŒå…¶ä¸­å¾ˆå¤šè®¡½Ž—方法甚至程序可以结合柴æ²ÒŽœºç”늫™çš„特点加以引用,故本书除在概念上作些介绍外,不在计算æ–ÒŽ³•ä¸Šè¯¦¾l†è®¨è®ºã€?/span></p><p style="padding: 0px;margin-top: 0px;margin-bottom: 0px;font-family: 宋体;font-size: 13px;line-height: 24px;white-space: normal;text-indent: 37px"><span style="font-size: 14px">更多柴æÑa发电机组</span><span style="text-decoration: none; font-size: 14px; color: rgb(0, 0, 0);">òq¶è”˜qè¡Œçš„特ç‚?/span><span style="font-size: 14px">及注意问题,发电机组òq¶è”的静态稳定性和动态稳定性详¾l†å†…容等发电机技术支持请å…Ïx³¨<a href="http://www.souxuehui.com" target="_blank" title="潍坊发电机出¿U?>潍坊发电机出¿U?/a>åQŒæœåŠ¡çƒ­¾U?span style="font-size: 18px;"><strong><span style="color: rgb(255, 0, 0);">13326393979</span></strong></span></span></p><p><br/></p></div> <p> 本文由发甉|œºå‡ºç§Ÿ(http://www.souxuehui.com)攉™›†äºŽç½‘¾lœä¸ä»£è¡¨æœ¬ç«™è§‚点åQŒå¦‚果您˜q˜æƒ³äº†è§£æ›´å¤šå…³äºŽ<a href="http://www.souxuehui.com"> 潍坊发电机出¿U?/a>和发甉|œº¿UŸèµçš„文章,è¯ïL‚¹å‡ÀLŸ¥çœ‹é™éŸ›_‘甉|œºå‡ºç§Ÿå’Œå¤§åž‹å‘甉|œºå‡ºç§Ÿçš„其它文ç«?请关注中动发甉|œºå‡ºç§Ÿå®˜æ–¹¾|‘ç«™</p> <div class="main_r_nav"> <div> <p>上一条: <a href="/xwdt/50.html" title="柴æÑa发电机组内燃机大修基本内容以及判定条件是什ä¹?>柴æÑa发电机组内燃机大修基本内容以及判定条件是什ä¹?/a> </p> </div> <div>下一条: <a href="/xwdt/56.html" title="柴æÑa发电机组ç”늓¶çš„注意事™å?>柴æÑa发电机组ç”늓¶çš„注意事™å?/a> </div> </div> <span class="two">最æ–îC¿¡æ?/span> <div class="xgnews"> <ul> <li><span>2020-01-09 11:45:25</span><a href="/fdjzs/61.html"title="ä¸ÞZ»€ä¹ˆç”µå­è°ƒé€Ÿçš„柴æÑa发电机组性能好?">ä¸ÞZ»€ä¹ˆç”µå­è°ƒé€Ÿçš„柴æÑa发电机组性能好?</a></li> <li><span>2018-05-31 09:00:07</span><a 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