本文選題：分布式發(fā)電　切入點：微電網(wǎng)　出處：《天津大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：微電網(wǎng)將微型電源、儲能設(shè)備、負(fù)荷以及控制與保護(hù)裝置整合在一起,形成一個單一可控的配電網(wǎng)單元。由于微電網(wǎng)系統(tǒng)中包括大量的電力電子設(shè)備,控制方式復(fù)雜,掌握其運(yùn)行特性和故障特性是保證微電網(wǎng)正常運(yùn)行及控制的基礎(chǔ)。本文在實時數(shù)字仿真器(Real Time Digital Simulator,RTDS)上搭建了微電網(wǎng)的數(shù)字仿真平臺,實現(xiàn)對分布式電源和微電網(wǎng)運(yùn)行及控制的全面、深入的分析和仿真。本文的研究內(nèi)容及成果如下:(1)介紹了微電源的RTDS模型,包括恒速恒頻風(fēng)力發(fā)電模型、雙饋式變速恒頻風(fēng)力發(fā)電模型、直驅(qū)永磁式變速恒頻風(fēng)力發(fā)電模型、光伏發(fā)電模型、蓄電池儲能模型、超級電容儲能模型,為微電網(wǎng)仿真研究提供了基礎(chǔ)。(2)在對微電源基本控制方法和微電網(wǎng)運(yùn)行控制策略進(jìn)行深入分析的基礎(chǔ)上,搭建基于RTDS平臺的微電網(wǎng)仿真模型。研究微電網(wǎng)在并網(wǎng)、孤網(wǎng)運(yùn)行模式及其相互切換的動態(tài)運(yùn)行特性。采用實際的微電網(wǎng)參數(shù)對中新天津生態(tài)城進(jìn)行仿真,對實際運(yùn)行波形與仿真波形進(jìn)行對比分析,在驗證得到正確的模型后,針對發(fā)現(xiàn)的問題,通過仿真確定系統(tǒng)的合理參數(shù),為真實系統(tǒng)參數(shù)設(shè)置和控制策略提供指導(dǎo)。(3)建立微電網(wǎng)的仿真模型,分析并網(wǎng)和孤島兩種運(yùn)行模式下,微電網(wǎng)的故障特性及對配電網(wǎng)保護(hù)的影響。采用真實設(shè)備及仿真模型相結(jié)合的方法,搭建微電網(wǎng)并網(wǎng)保護(hù)控制裝置閉環(huán)測試平臺,仿真模擬微電網(wǎng)系統(tǒng)輸入輸出及運(yùn)行特性,開展微電網(wǎng)并網(wǎng)控制器的測試試驗。
[Abstract]:Microgrid integrates micro power supply, energy storage equipment, load and control and protection devices to form a single controllable distribution network unit. Mastering its operation characteristic and fault characteristic is the foundation to guarantee the normal operation and control of microgrid. In this paper, the digital simulation platform of microgrid is built on Real Time Digital Simulator RTDSs. The research contents and results of this paper are as follows: 1. This paper introduces the RTDS model of micro power supply, including constant speed constant frequency wind power generation model. Doubly-fed variable speed constant frequency wind power generation model, direct-drive permanent magnet variable speed constant frequency wind power generation model, photovoltaic generation model, battery energy storage model, super capacitor energy storage model, On the basis of deep analysis of the basic control method of micro-power supply and the control strategy of micro-grid operation, the simulation model of micro-grid based on RTDS platform is built, and the grid-connected microgrid is studied. The operating mode of isolated network and its dynamic operation characteristics of switching each other. The actual parameters of microgrid are used to simulate the Zhongxin Tianjin Ecological City, and the actual operation waveform and the simulation waveform are compared and analyzed, and the correct model is obtained after the verification. Aiming at the discovered problems, the reasonable parameters of the system are determined by simulation, and the simulation model of microgrid is established by providing guidance for the real system parameter setting and control strategy. Under the two operation modes of grid-connected and islanding, the simulation model of micro-grid is established. The fault characteristics of microgrid and its influence on distribution network protection. The closed loop test platform of microgrid protection control device is built by combining real equipment and simulation model, and the input, output and operation characteristics of microgrid system are simulated. The test test of microgrid grid-connected controller is carried out.
【學(xué)位授予單位】：天津大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM732

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