HONEYWELL CC-MCAR02卡件,CC-MCAR02使用過(guò)程
熱態(tài)及極熱態(tài)啟動(dòng)機(jī)組將以1000rpm/min升速率直接沖轉(zhuǎn)到5023rpm。
當(dāng)機(jī)組轉(zhuǎn)速達(dá)到5023轉(zhuǎn)后DEH系統(tǒng)檢測(cè)到同期裝置請(qǐng)求信號(hào)后自動(dòng)投入自動(dòng)同期模式，已備并網(wǎng)。由于現(xiàn)場(chǎng)機(jī)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(zhuǎn)過(guò)程中操作員可以根據(jù)實(shí)際情況選擇暫停沖轉(zhuǎn)或繼續(xù)沖轉(zhuǎn)，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(tǒng)還根據(jù)業(yè)主要求增加了DEH系統(tǒng)APS退出功能，當(dāng)沖轉(zhuǎn)過(guò)程中退出DEH將保持當(dāng)前轉(zhuǎn)速不變。DEH系統(tǒng)退出APS后將不能重新在DEH控制系統(tǒng)中重新投入APS, 需APS系統(tǒng)重新發(fā)出DEH系統(tǒng)APS啟動(dòng)信號(hào)才能使DEH系統(tǒng)再次進(jìn)行APS啟動(dòng)。
1.3汽機(jī)并網(wǎng)
機(jī)組并網(wǎng)后，DEH系統(tǒng)會(huì)判斷當(dāng)前負(fù)荷是否大于最小負(fù)荷，如當(dāng)前負(fù)荷小于DEH系統(tǒng)允許的最小負(fù)荷，DEH系統(tǒng)會(huì)自動(dòng)升負(fù)荷到最小負(fù)荷。如當(dāng)前負(fù)荷大于DEH系統(tǒng)設(shè)定的最小負(fù)荷，DEH系統(tǒng)會(huì)自動(dòng)將GV1&GV2按照10%/min的速率將閥門打開(kāi)，直至GV1&GV2全開(kāi)。由于次機(jī)組是聯(lián)合循環(huán)供熱機(jī)組，所以DEH系統(tǒng)基本都是閥位控制且閥門全開(kāi)狀態(tài)，機(jī)組負(fù)荷主要由燃機(jī)控制。
2. DEH系統(tǒng)APS停機(jī)
DEH系統(tǒng)停機(jī)分為2個(gè)部分，DEH系統(tǒng)減負(fù)荷，ETS打閘。
當(dāng)DEH系統(tǒng)接收到APS停機(jī)指令后且燃機(jī)負(fù)荷小于15MW、主汽壓力小于7Mpa時(shí)DEH將閥門從100%開(kāi)度按照30%/min的速率將閥門開(kāi)度關(guān)到20%。HONEYWELL CC-MCAR02卡件
當(dāng)燃機(jī)負(fù)荷小于5MW時(shí)且接收到APS打閘信號(hào)后，DEH系統(tǒng)自動(dòng)進(jìn)行ETS打閘。
圖四：DEH系統(tǒng)APS控制
項(xiàng)目意義
中電江門高新區(qū)2X60MW 級(jí)天然氣分布式能源項(xiàng)目全廠APS一鍵啟、停功能的實(shí)現(xiàn)，在提高機(jī)組自動(dòng)化控制水平的同時(shí)，全面提高了機(jī)組長(zhǎng)期安全、經(jīng)濟(jì)運(yùn)行水平、減輕了運(yùn)行人員的操作強(qiáng)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
