0100-20155 ILDS
0100-20155 ILDS
0100-20155 ILDS
《聯(lián)系人；歐先生》
當變電所進線功率小于廠用電速降功率時，則系統(tǒng)進入斜坡停車狀態(tài)，變頻器減小發(fā)電功率，防止超發(fā)。
（2）廠用電速停功率
當變電所進線功率小于廠用電立停功率后，變頻器立即停車，停止發(fā)電。
通常設置時，廠用電速降功率>廠用電立停功率。
（3）汽輪機最低轉數(shù)
當變頻器所測轉速小于汽輪機最低轉數(shù)設置值后，系統(tǒng)自動進入斜坡停車狀態(tài)，變頻器減小發(fā)電量。當變頻器所測轉速不再小于汽輪機最低轉數(shù)設置值，則自動恢復至正常狀態(tài)。其中還包括汽輪機停機轉數(shù)，當汽輪機轉數(shù)小于某一轉數(shù)，則變頻器立刻停機，當前設置為300rpm。
（4）通訊故障保護
閉環(huán)運行狀態(tài)下，當檢測到系統(tǒng)發(fā)生通訊斷線(通過心跳位進行判斷)，則變頻器側將自動由閉環(huán)運行狀態(tài)切換至開環(huán)運行狀態(tài)繼續(xù)運行。
2.3系統(tǒng)限制功能
（1）轉矩限制功能
轉矩限制值包括用戶在DCS直接設置的轉矩限制值以及伺服電流限制邏輯計算得到的轉矩限制值。對于用戶在DCS直接設置的轉矩限制值。當系統(tǒng)反饋值還未達到系統(tǒng)給定值時，如果轉矩輸出值達到限制值后，將以限制值作為輸出。比如，開環(huán)運行狀態(tài)下，當轉矩限制為30%時，如果尚未達到給定量，則PI輸出一直限制在30%，
汽輪機汽門開度(伺服電流反饋值)達到汽輪機汽門開度限制值(伺服電流設定值)后，計算得出的當前轉矩輸出值。轉矩限制邏輯中，將以較小的數(shù)值為準。
《座機：0592-5709825》
《傳真：0592-5917519》
《24小時熱線：18030229053微信同步》
《QQ ：2479261344》
《QQ郵箱：2479261344@qq.com》
分別在積分值與PI輸出處進行限制。但是有一點，假如運行情況下轉矩限制值為30%，此時上位機修改轉矩限制值為20%，需要斜坡下降到20%，不能直接到20%，防止汽輪機出現(xiàn)轉速巨大波動。
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