本文選題：抽水蓄能電站 + 水輪機(jī)調(diào)節(jié)系統(tǒng)　； 參考：《華北電力大學(xué)》2014年碩士論文

【摘要】：本文主要研究抽水蓄能電站單機(jī)動(dòng)態(tài)特性與控制性能,并對(duì)其建立仿真平臺(tái)對(duì)各過(guò)渡過(guò)程動(dòng)態(tài)特性進(jìn)行仿真實(shí)現(xiàn)。針對(duì)水輪機(jī)調(diào)節(jié)系統(tǒng)的物理結(jié)構(gòu)建立各模塊傳遞函數(shù),在穩(wěn)定工況點(diǎn)附近為調(diào)節(jié)系統(tǒng)建立數(shù)學(xué)模型,并依據(jù)水輪機(jī)調(diào)節(jié)系統(tǒng)的數(shù)學(xué)模型建立仿真模型,研究抽水蓄能水輪機(jī)的十幾種工況轉(zhuǎn)換過(guò)程、機(jī)組并網(wǎng)等工作狀態(tài)。 分析模型機(jī)理知,水輪機(jī)水頭變化引起模型參數(shù)變化,動(dòng)態(tài)特性亦變化。論文使用模型參考自適應(yīng)控制方式對(duì)抽水蓄能水輪機(jī)進(jìn)行自適應(yīng)研究,結(jié)合李雅普諾夫穩(wěn)定性理論和波波夫的超穩(wěn)定性理論推導(dǎo)出使實(shí)際輸出滿足控制要求的控制器變化規(guī)則。最后,分別使用PID控制器與模型參考自適應(yīng)控制器對(duì)機(jī)組并網(wǎng)、過(guò)渡過(guò)程等工作狀態(tài)進(jìn)行控制仿真,研究水頭變化后的動(dòng)態(tài)特性。比較仿真結(jié)果可知,模型參考自適應(yīng)控制較PID控制超調(diào)量小、調(diào)節(jié)時(shí)間短、穩(wěn)定性好、控制性能良好,能夠減小水輪機(jī)系統(tǒng)機(jī)械損傷。
[Abstract]:In this paper, the dynamic characteristics and control performance of single unit in pumped storage power station are studied, and the simulation platform is established to realize the dynamic characteristics of each transition process. According to the physical structure of the turbine governing system, the transfer function of each module is established, and the mathematical model of the regulating system is established near the point of steady working condition, and the simulation model is established according to the mathematical model of the governing system of the turbine. In this paper, more than a dozen operating conditions of pumped-storage turbines are studied. According to the analysis of the model mechanism, the change of hydraulic head of turbine causes the change of model parameters and dynamic characteristics. In this paper, the model reference adaptive control method is used to study adaptively the pumped storage turbine. Combined with Lyapunov stability theory and Popov's hyperstability theory, the controller variation rules are deduced to make the actual output meet the control requirements. Finally, the PID controller and the model reference adaptive controller are used to control the grid-connected and transient working conditions of the unit, and the dynamic characteristics of the water head after the change of the water head are studied. The simulation results show that the model reference adaptive control has less overshoot, shorter adjustment time, better stability and better control performance than PID control, which can reduce the mechanical damage of hydraulic turbine system.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TV743

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本文編號(hào)：1931040