本文選題：微電網(wǎng) + 微電源�。� 參考：《安徽工業(yè)大學(xué)》2017年碩士論文

【摘要】：面臨著傳統(tǒng)能源的耗盡,新型能源逐漸進(jìn)入人們的生活。對(duì)于21世紀(jì)的中國(guó)來說,能源的正確合理使用就會(huì)顯得尤為重要。風(fēng)能與光伏作為強(qiáng)有力的清潔性能源并以獨(dú)特的運(yùn)行方式得到了快速的發(fā)展和利用。微電網(wǎng)通過整合微電源與配電網(wǎng)可以方便的進(jìn)行結(jié)構(gòu)和配置的優(yōu)化。本文通過對(duì)微電網(wǎng)數(shù)學(xué)模型及不同的運(yùn)行控制和保護(hù)策略進(jìn)行了詳細(xì)的分析,緊接著搭建了相應(yīng)的仿真模型對(duì)其進(jìn)行了驗(yàn)證。首先,分析了微電源的數(shù)學(xué)模型及控制策略,本文涉及的微電源有恒速恒頻風(fēng)力發(fā)電機(jī)、蓄電池逆變電源、光伏發(fā)電電源,并對(duì)逆變型微源的PQ和VF控制進(jìn)行了詳細(xì)地分析與研究。其次,利用PSCAD/EMTDC軟件搭建了風(fēng)力發(fā)電、蓄電池逆變電源以及簡(jiǎn)化的光伏發(fā)電的仿真模型,其仿真結(jié)果表明各個(gè)微電源仿真模型的正確性。然后根據(jù)微電網(wǎng)的結(jié)構(gòu)設(shè)計(jì)原則,在前述微電源模型的基礎(chǔ)上搭建起交流微電網(wǎng)仿真平臺(tái),通過對(duì)微電網(wǎng)并網(wǎng)、孤島及并離網(wǎng)轉(zhuǎn)換等不同運(yùn)行方式的仿真,分析了系統(tǒng)的動(dòng)態(tài)性能,驗(yàn)證了微源控制策略的有效性與正確性。為了進(jìn)行保護(hù)策略的研究,對(duì)微電源及微電網(wǎng)并網(wǎng)和孤島運(yùn)行的故障特性進(jìn)行了理論分析和仿真研究,采用了基于電流相位差動(dòng)保護(hù)原理的雙電源供電的線路保護(hù)、過流保護(hù)的負(fù)荷保護(hù)以及電壓偏移的電源保護(hù)相結(jié)合的綜合保護(hù)作為保護(hù)策略。
[Abstract]:Facing the depletion of traditional energy, new energy gradually enters people's life.For China in the 21 st century, the correct and rational use of energy will be particularly important.As a powerful clean energy, wind energy and photovoltaic have been developed and utilized rapidly.The structure and configuration of microgrid can be optimized conveniently by integrating micro power supply with distribution network.In this paper, the mathematical model of microgrid and different operation control and protection strategies are analyzed in detail, and then the corresponding simulation model is built to verify it.Firstly, the mathematical model and control strategy of micro power supply are analyzed. The micro power supply in this paper includes constant speed constant frequency wind turbine, battery inverter, photovoltaic power.The PQ and VF control of inverter microsource are analyzed and studied in detail.Secondly, the simulation models of wind power generation, battery inverter and simplified photovoltaic power generation are built by using PSCAD/EMTDC software. The simulation results show that the simulation models of each micro-power source are correct.Then according to the principle of microgrid structure design, the AC microgrid simulation platform is built on the basis of the micro-power model mentioned above, and the simulation of different operation modes such as grid-connected, isolated island and off-grid conversion is carried out.The dynamic performance of the system is analyzed and the validity and correctness of the microsource control strategy are verified.In order to study the protection strategy, the fault characteristics of micropower supply, microgrid grid-connected and isolated island operation are theoretically analyzed and simulated. The dual-power line protection based on current phase differential protection is adopted.The load protection of overcurrent protection and the integrated protection of voltage offset power protection are used as protection strategies.
【學(xué)位授予單位】：安徽工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：TM727

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