本文關(guān)鍵詞：含抽水蓄能電站的電網(wǎng)負(fù)荷頻率控制系統(tǒng)研究　出處：《上海交通大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 抽水蓄能電站 負(fù)荷頻率控制 緊急功率支援 模糊控制

【摘要】：隨著電網(wǎng)規(guī)模的日益擴(kuò)大,電網(wǎng)的運(yùn)行環(huán)境也呈現(xiàn)出復(fù)雜化的趨勢,電網(wǎng)日常運(yùn)行的安全性和出現(xiàn)擾動后的穩(wěn)定性問題越來越受人們重視。而堅強(qiáng)智能電網(wǎng)的建設(shè),特高壓聯(lián)網(wǎng)的推進(jìn)導(dǎo)致電網(wǎng)外受電電力不斷增加,大受端電網(wǎng)特征日益明顯,增強(qiáng)面對突發(fā)大規(guī)模電力缺失的緊急事故處理能力已迫在眉睫。抽水蓄能電站是目前已在電網(wǎng)中應(yīng)用的一種較成熟的儲能技術(shù),對電網(wǎng)的日常運(yùn)行起到了很大的作用。隨著電網(wǎng)規(guī)模的擴(kuò)大和運(yùn)行環(huán)境的日益復(fù)雜,抽水蓄能電站在原有作用的基礎(chǔ)上有能力承擔(dān)更大的責(zé)任,故需要對抽水蓄能電站的運(yùn)營模式進(jìn)行進(jìn)一步的研究。本文立足于抽水蓄能電站,對其在電力系統(tǒng)日常運(yùn)行中的負(fù)荷頻率控制及緊急狀態(tài)下的功率支援進(jìn)行了研究,所做的主要工作如下:(1)總結(jié)了傳統(tǒng)負(fù)荷頻率控制系統(tǒng)模型中常見的元件,建立單區(qū)域負(fù)荷頻率控制的傳遞函數(shù)及狀態(tài)空間模型。分析了傳統(tǒng)線性模型的不足之處,基于對電力系統(tǒng)非線性環(huán)節(jié)的分析,建立了考慮非線性的兩區(qū)域再熱式汽輪機(jī)組模型。(2)對抽水蓄能電站的工作模式進(jìn)行分析,區(qū)分為發(fā)電工況和抽水工況,對應(yīng)不同的工況分別建立了抽水蓄能電站的模型。結(jié)合抽水蓄能電站及區(qū)域負(fù)荷頻率控制的模型提出了含抽水蓄能電站的區(qū)域負(fù)荷頻率控制模型。針對該模型對不同機(jī)組設(shè)計了相應(yīng)的控制器,通過仿真研究驗證了電網(wǎng)負(fù)荷頻率控制系統(tǒng)中加入抽水蓄能電站后,頻率變化減小,恢復(fù)速度加快,動態(tài)特性變好。(3)針對當(dāng)前電力系統(tǒng)直流緊急功率支援系統(tǒng)的不足之處,以階梯式抽水蓄能電站模型為基礎(chǔ)構(gòu)建了抽水蓄能電站緊急功率支援系統(tǒng)。對支援系統(tǒng)的啟動條件,功率分配過程,退出過程進(jìn)行了設(shè)計,形成了抽水蓄能電站緊急功率支援系統(tǒng)的整個執(zhí)行過程。通過多電站的聯(lián)合試驗驗證了整個系統(tǒng)邏輯的正確性,為抽水蓄能電站緊急功率支援系統(tǒng)的實際應(yīng)用打下了基礎(chǔ)。
[Abstract]:With the increasing scale of power grid, power grid operation environment also showed a complex trend, the daily operation of the power grid security and stability problem of disturbance after more and more attention by people. While the strong smart grid construction, especially to promote networking caused by high power electric power increasing, increasingly large receiving end grid features obviously, in the face of enhancing emergency handling capabilities of sudden large-scale power loss is imminent. The pumped storage power station is a relatively mature reservoir has been applied in the grid technology, the daily operation of the power grid has played a very important role. With the expansion of power grid and operating environment is increasingly complex, pumped storage based on the original function of the power plant have the ability to assume greater responsibility, so the need for pumped storage power station operation mode to carry out further research. This paper is based on the pumped storage Can the power plant to power its support in the daily operation of the power system load frequency control and under the state of emergency was studied, the main work is as follows: (1) summarizing the traditional load frequency control element common system model, the establishment of a single regional load frequency control transfer function and state space model. Analysis of the shortcomings of the traditional linear model, the nonlinear analysis of part of the power system based on the established model of two regional reheat steam turbine (2). Considering the nonlinear analysis of pumped storage power station work mode, divided into generating condition and pumping condition, corresponding to different conditions were established for Pumped Storage power station the model combined with pumped storage power station and load frequency control model proposed regional load frequency control model of pumped storage power station. According to the design of the model of machine group The corresponding controller, the simulation results demonstrate that the grid load frequency control system in pumped storage power station, the frequency change decreases and the recovery speed, the dynamic characteristics of good. (3) aiming at the deficiencies of current power system emergency DC power support system, with a ladder pumped storage power plant model of pumped storage power station emergency power support system based on energy storage. Starting conditions on the support system, power allocation process, from the design process, the formation of pumped storage power stations throughout the implementation process of emergency power support system. Through the joint test station to verify the correctness of the system logic, for Pumped Storage Foundation the actual application of emergency power support system of power plant.

【學(xué)位授予單位】：上海交通大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TV743;TM732

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