本文選題：聯(lián)合控制 + 統(tǒng)一潮流控制器��； 參考：《長沙理工大學(xué)》2014年碩士論文

【摘要】：隨著電力行業(yè)的發(fā)展,輸電網(wǎng)絡(luò)的建設(shè)規(guī)模的增大,輸電技術(shù)也得到了越來越多的重視。電力系統(tǒng)輸送電能過程的穩(wěn)定與否,電力供給的容量和質(zhì)量,都在影響著電網(wǎng)未來的發(fā)展。統(tǒng)一潮流控制器(UPFC)以其良好的穩(wěn)定性,不俗的市場潛力和電力系統(tǒng)快速、靈活的調(diào)控能力,逐漸被電力電子技術(shù)領(lǐng)域所認(rèn)可,得到了快速發(fā)展的機(jī)會(huì)。統(tǒng)一潮流控制器既能利用補(bǔ)償器進(jìn)行獨(dú)立控制,更重要的是利用其復(fù)合性進(jìn)行聯(lián)合控制,擁有穩(wěn)定可靠的控制效果和非常大的可開發(fā)空間。論文詳細(xì)的介紹了統(tǒng)一潮流控制器的研究背景及意義,發(fā)展及現(xiàn)狀,進(jìn)而引出了統(tǒng)一潮流控制器的產(chǎn)生及基本構(gòu)成。論文依據(jù)統(tǒng)一潮流控制器的換流器工作原理,構(gòu)建出聯(lián)合控制的穩(wěn)態(tài)及暫態(tài)模型,為進(jìn)一步研究統(tǒng)一潮流控制器的聯(lián)合控制原理提供了理論依據(jù)。本文完整的闡述了控制器進(jìn)行聯(lián)合調(diào)控的工作原理,提出了并聯(lián)側(cè)、串聯(lián)側(cè)的控制作用下采取的不同控制策略,對(duì)兩個(gè)換流器采取了不同的雙閉環(huán)反饋設(shè)計(jì)。新型的統(tǒng)一潮流控制器利用PI解耦計(jì)算器和控制器的作用,對(duì)輸電系統(tǒng)的參數(shù)變化做出迅速響應(yīng),發(fā)出準(zhǔn)確的控制信號(hào)指令,提供適當(dāng)?shù)难a(bǔ)償量,補(bǔ)償無功功率并穩(wěn)定線路電壓。統(tǒng)一潮流控制器的聯(lián)合控制作用依賴于兩個(gè)重要組成部分：靜止同步并聯(lián)補(bǔ)償器(STATCOM)和串聯(lián)補(bǔ)償器(SSSC)。論文參考它們的數(shù)學(xué)模型以及相關(guān)參數(shù)的取值,建立了兩種補(bǔ)償器的仿真模塊,使統(tǒng)一潮流控制器具有切換控制模式的功能,能實(shí)現(xiàn)聯(lián)合控制作用。論文基于MATLAB,SIMULINK平臺(tái),建立統(tǒng)一潮流控制器的仿真模型,來驗(yàn)證功率潮流參數(shù)的聯(lián)合控制作用效果。統(tǒng)一潮流控制器的仿真模型包括檢測、控制器、輸出運(yùn)算、系統(tǒng)接入四個(gè)部分,由鎖相環(huán)、測量、電流調(diào)節(jié)、電壓調(diào)節(jié)、脈沖發(fā)生器等子模塊構(gòu)成。論文建立了圖形用戶界面來設(shè)定功率、電壓等重要參數(shù)的標(biāo)準(zhǔn)值及變化量,并在仿真模型的各節(jié)點(diǎn)設(shè)置有示波器觀測系統(tǒng)參數(shù)的波形變化。通過觀察仿真圖形結(jié)果,驗(yàn)證了基于聯(lián)合控制統(tǒng)一潮流控制器對(duì)于系統(tǒng)的無功功率補(bǔ)償及電壓恒定具有穩(wěn)定、準(zhǔn)確的控制效果。
[Abstract]:With the development of power industry and the increase of power transmission network construction scale, more and more attention has been paid to transmission technology. The stability of power transmission process and the capacity and quality of power supply affect the future development of power grid. The unified power flow controller (UPFC), with its good stability, good market potential and fast and flexible control ability of power system, has been recognized by the power electronics technology field and got the opportunity of rapid development. The unified power flow controller can not only make use of compensator to control independently, but also, more importantly, make use of its compound to carry out joint control, which has stable and reliable control effect and very large exploitable space. This paper introduces the research background, significance, development and current situation of unified power flow controller in detail, and then leads to the generation and basic composition of unified power flow controller. According to the working principle of converters of unified power flow controller, the steady and transient models of joint control are constructed in this paper, which provides a theoretical basis for further study on the principle of joint control of unified power flow controller. In this paper, the working principle of the joint control of the controller is described, and the different control strategies under the control of the parallel side and the series side are put forward, and the two converters are designed with different double closed loop feedback. The new unified power flow controller makes use of Pi decoupling calculator and controller to respond quickly to the parameter change of transmission system, send out accurate control signal instruction, and provide appropriate compensation quantity. Compensate reactive power and stabilize line voltage. The joint control function of the unified power flow controller depends on two important components: static synchronous parallel compensator (STATCOM) and series compensator (SSSC). In this paper, the simulation module of two compensators is established with reference to their mathematical models and the values of related parameters. The unified power flow controller has the function of switching the control mode and can realize the joint control function. Based on MATLAB Simulink platform, the simulation model of unified power flow controller is established to verify the joint control effect of power flow parameters. The simulation model of the unified power flow controller consists of four parts: detection, controller, output operation and system access. It is composed of phase-locked loop, measurement, current regulation, voltage regulation, pulse generator and other sub-modules. In this paper, a graphical user interface is established to set up the standard values and variations of important parameters, such as power and voltage, and the waveform changes of the parameters of the oscilloscope observation system are set up at each node of the simulation model. The simulation results show that the unified power flow controller based on joint control has a stable and accurate control effect on reactive power compensation and voltage invariance of the system.
【學(xué)位授予單位】：長沙理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM761
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本文編號(hào)：2030923