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  本文選題：微電網(wǎng) + 光伏發(fā)電系統(tǒng)　； 參考：《東南大學(xué)》2015年碩士論文

【摘要】：隨著環(huán)境問題日益嚴(yán)峻,人們對清潔能源并網(wǎng)技術(shù)進(jìn)行了深入的研究。但是配電網(wǎng)的穩(wěn)定性及電能質(zhì)量等指標(biāo)由于隨機(jī)性高的可再生能源接入勢必會降低,并帶來其它不利影響。為了充分吸收可再生能源的能量并同時穩(wěn)定電網(wǎng),提出了微電網(wǎng)技術(shù)。微電網(wǎng)是由可再生能源、分布式發(fā)電及并網(wǎng)電力電子裝置及控制機(jī)構(gòu)組成的有機(jī)整體,既可以作為電網(wǎng)的可控負(fù)荷參與調(diào)度,必要時也可以脫網(wǎng),實(shí)現(xiàn)孤島自治運(yùn)行。在此背景下,本文針對典型微電網(wǎng)—光儲型微電網(wǎng),從分布式電源模型、分布式電源并網(wǎng)及微電網(wǎng)應(yīng)用幾個方面進(jìn)行工程性研究,為微電網(wǎng)示范工程應(yīng)用提供理論依據(jù),具體的研究工作如下：1)分析了光伏發(fā)電系統(tǒng)及儲能系統(tǒng)的結(jié)構(gòu),建立了光伏組件及儲能電池的工程化應(yīng)用模型,并對模型的動態(tài)外特性進(jìn)行仿真,結(jié)合實(shí)際產(chǎn)品的特性曲線,對模型進(jìn)行參數(shù)辨識并比較,為建立工程化模型做準(zhǔn)備。2) 分析了直流變換器和并網(wǎng)逆變器的結(jié)構(gòu)及控制技術(shù),重點(diǎn)對恒功率控制,恒壓/恒頻控制,下垂控制進(jìn)行了分析,并建立相應(yīng)的算法控制策略。對光伏發(fā)電組件的PQ控制及儲能系統(tǒng)的PQ控制及U/F控制進(jìn)行了仿真測試。3) 概括了微電網(wǎng)協(xié)調(diào)控制方法及運(yùn)行模式,分析了主從控制、對等控制及分層分布式控制的優(yōu)缺點(diǎn)及不同運(yùn)行模式下需要解決的問題,基于主從控制方法,本文建立了包含光伏發(fā)電及儲能系統(tǒng)的工程化微電網(wǎng)模型。4) 基于PSCAD電磁仿真軟件,建立光儲型微電網(wǎng)模型,研究分布式電源的PQ、U/f控制策略,并設(shè)計了并網(wǎng)、離網(wǎng)、并離網(wǎng)切換等應(yīng)用場景,仿真分析不同場景下的微電網(wǎng)運(yùn)行控制效果,驗(yàn)證了所設(shè)計的策略的有效性及穩(wěn)定性,為示范工程的建立提供基礎(chǔ)。
[Abstract]:With the increasingly serious environmental problems, people have conducted in-depth research on clean energy grid technology. But the distribution network stability and power quality indexes such as the renewable energy access high randomness is bound to reduce, and other adverse effects. In order to fully absorb the renewable energy and power grid stability, are proposed grid technology. Micro grid is an organic whole by renewable energy, distributed generation and grid connected power electronic device and control mechanism, which can be used as a controllable load in grid scheduling, when necessary, can also be off the network, realize the autonomous island operation. Under this background, aiming at the typical micro grid light storage type micro grid, from the distributed power model, distributed power grid and micro grid application on engineering research, provide a theoretical basis for the micro grid demonstration projects, specific research The work is as follows: 1) analysis of the structure of photovoltaic power generation system and energy storage system, established the engineering application model of photovoltaic module and storage battery, and the dynamic characteristics of the model simulation, combined with the characteristic curve of the actual product, the model parameters were identified and compared, to prepare for the establishment of the.2 project model) analysis of the structure and control technology of DC converter and inverter, focus on the control of constant power, constant voltage / frequency control and droop control are analyzed, and establish the corresponding control strategy. The PQ control algorithm and U/F control PQ control and storage of photovoltaic power generation component system to carry out the simulation test.3) summarizes the micro grid coordinated control method and operation mode, analyzes the advantages and disadvantages of master-slave control, and different operation mode of peer control and distributed control of the need to solve the problem, based on the main control methods from, This paper built a photovoltaic power generation and energy storage system engineering micro grid model.4) PSCAD electromagnetic simulation software based on the establishment of light storage type micro grid model of distributed power supply PQ, U/f control strategy, and design the grid, from the network, and from the network handoff scenarios, simulation analysis of different scenarios micro grid operation control effect and verify the validity and stability of the design strategy, provide the basis for the establishment of the demonstration project.

【學(xué)位授予單位】：東南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TM732

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