本文選題：自動發(fā)電控制　切入點：有功功率　出處：《廣西大學》2014年碩士論文　論文類型：學位論文

【摘要】：現(xiàn)今綠色能源理念不斷發(fā)展,當代大型水力發(fā)電廠輸出系統(tǒng)的負荷比例不斷增加。隨著電網(wǎng)規(guī)模的壯大,電網(wǎng)結構及功率潮流日趨復雜,僅僅依靠傳統(tǒng)模式下現(xiàn)場運行人員局部、分散、人工控制手動調(diào)節(jié)機組出力以滿足系統(tǒng)負荷潮流方式已無法適應日新月異的電網(wǎng)發(fā)展,因此建設自動發(fā)電控制(AGC)系統(tǒng)實現(xiàn)全程對可控機組出力控制成為迫切的需要。 本文通過分析機組調(diào)節(jié)較小負荷時,由于平均分配原則導致的單機調(diào)節(jié)范圍落入“死區(qū)”現(xiàn)象,引入“小負荷分配”原則來解決上述問題。通過測量單機水頭、負荷、振擺度情況,分析并繪制單機和全廠聯(lián)合振動區(qū),指導監(jiān)控系統(tǒng)AGC合理分配各臺機組有功負荷,達到降低機組振動擺度的目標。對AGC程序進一步優(yōu)化,設置安全閉鎖功能來閉鎖AGC功能界面中的部分控制方式的切換順序,達到從程序上防止誤操作的可能性,以實現(xiàn)AGC的安全運行。 最后,在對采用了優(yōu)化AGC程序后的龍灘水電站各項運行指標進行對比分析,發(fā)現(xiàn)機組的振動擺度得到明顯降低,機組運行工況得到進一步優(yōu)化。在相同全廠總負荷時,優(yōu)化后的AGC程序可以有效降低全廠耗水量,給企業(yè)帶來顯著的經(jīng)濟效益和良好社會效益,大量水資源得到了節(jié)省和優(yōu)化,實現(xiàn)綠色環(huán)保能源的目標。
[Abstract]:With the development of the concept of green energy, the load ratio of the output system of large hydropower plants is increasing. With the expansion of power grid, the structure of power grid and power flow are becoming more and more complex. Only relying on the traditional mode of local, decentralized, manual control of manual control unit output to meet the system load and power flow mode has been unable to adapt to the rapid development of the power grid. Therefore, it is urgent to construct automatic generation control system (AGCC) to control the output of controllable units in the whole process. By analyzing the phenomenon that the adjustment range of single machine falls into "dead zone" caused by the principle of average distribution, this paper introduces the principle of "small load distribution" to solve the above problem. This paper analyzes and draws the joint vibration zone of single machine and the whole plant, instructs the monitoring system AGC to distribute the active power load of each unit reasonably, and achieves the goal of reducing the vibration swing of the unit. The AGC program is further optimized. The security locking function is set to switch the order of partial control mode in the AGC function interface, so as to prevent the misoperation from the program, so as to realize the safe operation of AGC. Finally, by comparing and analyzing the operation indexes of Longtan Hydropower Station after adopting the optimized AGC program, it is found that the vibration swing of the unit is obviously reduced, and the operating conditions of the unit are further optimized. When the total load of the same plant is the same, The optimized AGC program can effectively reduce the water consumption of the plant, bring remarkable economic benefits and good social benefits to the enterprise, save and optimize a large number of water resources, and realize the goal of green environmental protection energy.
【學位授予單位】：廣西大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TV736

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本文編號：1609688