【摘要】：太陽能是一次能源和清潔能源的代表，塔式太陽能熱發(fā)電技術(shù)是目前應(yīng)用最廣泛的太陽能熱發(fā)電技術(shù)。只有建立塔式太陽能熱發(fā)電系統(tǒng)動態(tài)數(shù)學(xué)模型，同時考慮系統(tǒng)的完整性(包含主輔系統(tǒng))和各個設(shè)備部件在運行中的相互作用與影響，才能準確分析不同因素變化對塔式太陽能熱發(fā)電系統(tǒng)各參數(shù)的影響，因此研究塔式太陽能熱發(fā)電系統(tǒng)的動態(tài)特性模型具有非常重要的意義。 本文以10MW塔式太陽能熱發(fā)電系統(tǒng)為研究對象，將系統(tǒng)劃分為聚光集熱子系統(tǒng)、儲能子系統(tǒng)和汽輪機發(fā)電子系統(tǒng)，并借助一體化模型開發(fā)平臺，將各個子系統(tǒng)分解成各個設(shè)備和過程環(huán)節(jié)�；诤喕奈锢砟Ｐ停鶕�(jù)質(zhì)量守恒方程、能量守恒方程、動量守恒方程及其它補充方程和機理過程，建立了各設(shè)備和過程的動態(tài)數(shù)學(xué)模型，采用Fortran語言編制各設(shè)備和過程環(huán)節(jié)的算法程序并進行標準化處理，得到塔式太陽能熱發(fā)電系統(tǒng)各設(shè)備的動態(tài)仿真模型，再通過流體網(wǎng)絡(luò)連接和系統(tǒng)集成，建立了整個發(fā)電系統(tǒng)的仿真模型。選取光照充足和光照不足的兩種典型運行模式進行仿真試驗，分別研究10MW塔式太陽能熱發(fā)電系統(tǒng)在光照強度為1000W/m2和750W/m2下的靜態(tài)特性和加入光照強度擾動的動態(tài)特性，得到各熱力設(shè)備模塊內(nèi)工質(zhì)的壓力、溫度和流量等參數(shù)隨光強擾動的響應(yīng)曲線，，并對仿真試驗的結(jié)果進行理論分析，得到一些有價值的結(jié)論，為后續(xù)大容量塔式太陽能熱發(fā)電站的設(shè)計和優(yōu)化運行提供了一定的參考。
[Abstract]:Solar energy is the representative of primary energy and clean energy. Tower solar thermal power generation technology is the most widely used solar thermal power technology. Only the dynamic mathematical model of the tower solar thermal power system is established, and the interaction and influence of the integrity of the system (including the main-auxiliary system) and the components of each equipment in the operation are considered at the same time. In order to accurately analyze the influence of different factors on the parameters of the tower solar thermal power generation system, it is very important to study the dynamic characteristic model of the tower solar thermal power generation system. In this paper, the 10MW tower solar thermal power generation system is taken as the research object. The system is divided into three parts: the concentrated heat collection subsystem, the energy storage subsystem and the steam turbine generation electronic system, and the integrated model development platform is used to develop the system. Decompose each subsystem into each equipment and process link. Based on the simplified physical model and the mass conservation equation, energy conservation equation, momentum conservation equation and other supplementary equations and mechanism processes, the dynamic mathematical models of each equipment and process are established. The algorithm program of each equipment and process link is compiled and standardized by Fortran language, and the dynamic simulation model of each equipment in the tower solar thermal power generation system is obtained, and then the system is integrated through fluid network connection. The simulation model of the whole power generation system is established. Two typical operation modes with sufficient and insufficient illumination were selected for simulation experiments to study the static characteristics and dynamic characteristics of 10MW tower solar thermal power system under the illumination intensity of 1000W/m2 and 750W/m2 respectively. The response curves of the parameters such as pressure, temperature and flow rate of the working fluid in each thermal equipment module with light intensity disturbance are obtained. The simulation results are analyzed theoretically and some valuable conclusions are obtained. It provides a certain reference for the design and optimization operation of the large-capacity solar thermal power station.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM615

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