0100-20155 ILDS
0100-20155 ILDS
0100-20155 ILDS
《聯(lián)系人；歐先生》
當(dāng)變電所進(jìn)線功率小于廠用電速降功率時(shí)，則系統(tǒng)進(jìn)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(dāng)變電所進(jìn)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(shè)置時(shí)，廠用電速降功率>廠用電立停功率。
（3）汽輪機(jī)最低轉(zhuǎn)數(shù)
當(dāng)變頻器所測轉(zhuǎn)速小于汽輪機(jī)最低轉(zhuǎn)數(shù)設(shè)置值后，系統(tǒng)自動(dòng)進(jìn)入斜坡停車狀態(tài)，變頻器減小發(fā)電量。當(dāng)變頻器所測轉(zhuǎn)速不再小于汽輪機(jī)最低轉(zhuǎn)數(shù)設(shè)置值，則自動(dòng)恢復(fù)至正常狀態(tài)。其中還包括汽輪機(jī)停機(jī)轉(zhuǎn)數(shù)，當(dāng)汽輪機(jī)轉(zhuǎn)數(shù)小于某一轉(zhuǎn)數(shù)，則變頻器立刻停機(jī)，當(dāng)前設(shè)置為300rpm。
（4）通訊故障保護(hù)
閉環(huán)運(yùn)行狀態(tài)下，當(dāng)檢測到系統(tǒng)發(fā)生通訊斷線(通過心跳位進(jìn)行判斷)，則變頻器側(cè)將自動(dòng)由閉環(huán)運(yùn)行狀態(tài)切換至開環(huán)運(yùn)行狀態(tài)繼續(xù)運(yùn)行。
2.3系統(tǒng)限制功能
（1）轉(zhuǎn)矩限制功能
轉(zhuǎn)矩限制值包括用戶在DCS直接設(shè)置的轉(zhuǎn)矩限制值以及伺服電流限制邏輯計(jì)算得到的轉(zhuǎn)矩限制值。對于用戶在DCS直接設(shè)置的轉(zhuǎn)矩限制值。當(dāng)系統(tǒng)反饋值還未達(dá)到系統(tǒng)給定值時(shí)，如果轉(zhuǎn)矩輸出值達(dá)到限制值后，將以限制值作為輸出。比如，開環(huán)運(yùn)行狀態(tài)下，當(dāng)轉(zhuǎn)矩限制為30%時(shí)，如果尚未達(dá)到給定量，則PI輸出一直限制在30%，
汽輪機(jī)汽門開度(伺服電流反饋值)達(dá)到汽輪機(jī)汽門開度限制值(伺服電流設(shè)定值)后，計(jì)算得出的當(dāng)前轉(zhuǎn)矩輸出值。轉(zhuǎn)矩限制邏輯中，將以較小的數(shù)值為準(zhǔn)。
《座機(jī)：0592-5709825》
《傳真：0592-5917519》
《24小時(shí)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(jìn)行限制。但是有一點(diǎn)，假如運(yùn)行情況下轉(zhuǎn)矩限制值為30%，此時(shí)上位機(jī)修改轉(zhuǎn)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(jī)出現(xiàn)轉(zhuǎn)速巨大波動(dòng)。
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