本文選題：統(tǒng)一潮流控制器 + 變參數(shù)PI自整定控制��； 參考：《重慶大學(xué)》2014年碩士論文

【摘要】：電力系統(tǒng)已進(jìn)入大系統(tǒng)、超高壓遠(yuǎn)距離輸電、跨區(qū)域聯(lián)網(wǎng)的新階段，社會(huì)經(jīng)濟(jì)的發(fā)展促使現(xiàn)代電網(wǎng)的運(yùn)行方式和管理發(fā)生變革，對(duì)其安全、穩(wěn)定、高效、靈活的潮流控制要求日益提高。柔性交流輸電系統(tǒng)（FACTS）的提出與發(fā)展，各種補(bǔ)償技術(shù)的實(shí)現(xiàn)，極大的改善了電力系統(tǒng)的潮流控制能力。統(tǒng)一潮流控制器（UPFC）作為柔性交流輸電家族中最復(fù)雜也是最有吸引力的一種補(bǔ)償器，能夠?qū)﹄娏�路上的阻抗、相角及有功和無(wú)功進(jìn)行任意組合控制，靈活性很強(qiáng)，自提出以來(lái)便得到電力工業(yè)界的廣泛關(guān)注。本文主要從改進(jìn)UPFC串聯(lián)變換器的潮流控制器與UPFC選址定容兩方面進(jìn)行研究。 本文首先簡(jiǎn)要介紹了統(tǒng)一潮流控制器的應(yīng)用及研究現(xiàn)狀，分析討論UPFC的基本結(jié)構(gòu)和工作原理，并對(duì)其并聯(lián)側(cè)變換器和串聯(lián)側(cè)變換器分別進(jìn)行數(shù)學(xué)建模和控制原理的闡述。之后對(duì)UPFC的主要參數(shù)，尤其是直流側(cè)電容的選取原則進(jìn)行了總結(jié)。 其次，為了改進(jìn)串聯(lián)側(cè)控制器的控制效果，分析并推導(dǎo)了其有功和無(wú)功潮流的傳遞函數(shù)，設(shè)計(jì)了一種變參數(shù)PI自整定控制器，，采用粒子群算法對(duì)控制器參數(shù)進(jìn)行尋優(yōu)。在MATLAB/SIMULINK中建立單機(jī)無(wú)窮大系統(tǒng)模型仿真，結(jié)果表明所改進(jìn)的控制方法與常規(guī)的PI控制相比，具有快速調(diào)節(jié)線路潮流，提高系統(tǒng)暫態(tài)穩(wěn)定性的功能。 最后，介紹線路有功潮流性能指數(shù)的概念，利用線路有功功率對(duì)UPFC注入電壓幅值和相角的靈敏度大小來(lái)確定其最佳安裝位置，并在IEEE14節(jié)點(diǎn)系統(tǒng)中利用該方法尋找最佳安裝位置。對(duì)建立UPFC投資成本和收益函數(shù)的方法進(jìn)行介紹，并以經(jīng)濟(jì)收益最大化為目標(biāo)，利用魚群算法尋找到UPFC的安裝容量。
[Abstract]:The power system has entered a new stage of large-scale system, ultra-high voltage long-distance transmission, cross-regional interconnection, and the development of social economy has promoted the transformation of the operation mode and management of modern power grid, which is safe, stable and efficient. Flexible power flow control is increasingly required. With the development of flexible AC transmission system (facts) and the realization of various compensation technologies, the power flow control ability of power system has been greatly improved. UPFC (Unified Power flow Controller) is the most complex and attractive compensator in the flexible AC transmission family. It can control impedance, phase angle, active and reactive power on power lines arbitrarily, and has strong flexibility. It has been widely concerned by the electric power industry since it was put forward. In this paper, the power flow controller of improved UPFC series converter and the location of UPFC are studied. This paper first introduces the application and research status of unified power flow controller, analyzes and discusses the basic structure and working principle of UPFC, and describes the mathematical modeling and control principle of parallel side converter and series side converter respectively. Then the main parameters of UPFC, especially the selection principle of DC side capacitance are summarized. Secondly, in order to improve the control effect of the series side controller, the transfer function of the active and reactive power flow is analyzed and deduced, and a Pi self-tuning controller with variable parameters is designed. The particle swarm optimization algorithm is used to optimize the controller parameters. The simulation results of a single machine infinite bus system model in MATLAB/SIMULINK show that the improved control method has the function of fast regulating the line power flow and improving the transient stability of the system compared with the conventional Pi control. Finally, the concept of line active power flow performance index is introduced. The sensitivity of line active power to UPFC injection voltage amplitude and phase angle is used to determine the optimal installation position, and the optimal installation position is found in IEEE14 node system. This paper introduces the method of establishing the UPFC investment cost and income function, and aiming at maximizing the economic benefit, finds out the installation capacity of UPFC by using the fish swarm algorithm.
【學(xué)位授予單位】：重慶大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM721.2

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