HONEYWELL CC-MCAR02卡件,CC-MCAR02使用過(guò)程
熱態(tài)及極熱態(tài)啟動(dòng)機組將以1000rpm/min升速率直接沖轉到5023rpm。
當機組轉速達到5023轉后DEH系統檢測到同期裝置請求信號后自動(dòng)投入自動(dòng)同期模式，已備并網(wǎng)。由于現場(chǎng)機組啟動(dòng)過(guò)程中遇到振動(dòng)較大等特殊情況，CC-MCAR02卡件業(yè)主要求增加自動(dòng)沖轉過(guò)程中操作員可以根據實(shí)際情況選擇暫停沖轉或繼續沖轉，特此增加了這部分功能，按鈕和原DEH控制面板中的進(jìn)行/保持是同一個(gè)按鈕。
系統還根據業(yè)主要求增加了DEH系統APS退出功能，當沖轉過(guò)程中退出DEH將保持當前轉速不變。DEH系統退出APS后將不能重新在DEH控制系統中重新投入APS, 需APS系統重新發(fā)出DEH系統APS啟動(dòng)信號才能使DEH系統再次進(jìn)行APS啟動(dòng)。
1.3汽機并網(wǎng)
機組并網(wǎng)后，DEH系統會(huì )判斷當前負荷是否大于最小負荷，如當前負荷小于DEH系統允許的最小負荷，DEH系統會(huì )自動(dòng)升負荷到最小負荷。如當前負荷大于DEH系統設定的最小負荷，DEH系統會(huì )自動(dòng)將GV1&GV2按照10%/min的速率將閥門(mén)打開(kāi)，直至GV1&GV2全開(kāi)。由于次機組是聯(lián)合循環(huán)供熱機組，所以DEH系統基本都是閥位控制且閥門(mén)全開(kāi)狀態(tài)，機組負荷主要由燃機控制。
2. DEH系統APS停機
DEH系統停機分為2個(gè)部分，DEH系統減負荷，ETS打閘。
當DEH系統接收到APS停機指令后且燃機負荷小于15MW、主汽壓力小于7Mpa時(shí)DEH將閥門(mén)從100%開(kāi)度按照30%/min的速率將閥門(mén)開(kāi)度關(guān)到20%。HONEYWELL CC-MCAR02卡件
當燃機負荷小于5MW時(shí)且接收到APS打閘信號后，DEH系統自動(dòng)進(jìn)行ETS打閘。
圖四：DEH系統APS控制
項目意義
中電江門(mén)高新區2X60MW 級天然氣分布式能源項目全廠(chǎng)APS一鍵啟、停功能的實(shí)現，在提高機組自動(dòng)化控制水平的同時(shí)，全面提高了機組長(cháng)期安全、經(jīng)濟運行水平、減輕了運行人員的操作強度。
stability of fuzzy control systems.
From the results of stability analysis of fuzzy control system, the most general method is Lyapunov method, but it is more conservative, and the circular criterion is more conservative. For some other typical fuzzy control system stability analysis methods, the object model is required to be determined and some continuity constraints should be met. For example, the description function analysis limit cycle essentially requires a linear time invariant object or an object with a specific mathematical form, so that the nonlinearity is bounded by a nonlinear element in the cycle.
5 conclusions and Prospects
The analysis of the fuzzy controller and the fuzzy controller can be used to reveal the relationship between the fuzzy controller and the fuzzy controller. Although many analytical results have been obtained, compared with the classical control theory, the analytical fuzzy control theory is still
