本文選題：微電網(wǎng) + 儲能單元　； 參考：《湖南工業(yè)大學》2014年碩士論文

【摘要】：微電網(wǎng)作為大型電網(wǎng)的有力補充，在電力系統(tǒng)中扮演著越來越重要的角色。但由于眾多非線性電力電子成員的加入，使微電網(wǎng)的電能質量受到嚴重污染。在不增加成本的前提下，為解決微電網(wǎng)電能質量問題，研究適用于微電網(wǎng)的儲能單元與APF組合裝置，實現(xiàn)“一機多能”。本文著重針對微電網(wǎng)儲能單元與APF組合裝置的原理及控制方法展開研究。 深入研究改善電網(wǎng)系統(tǒng)電能質量的微電網(wǎng)儲能單元及APF的系統(tǒng)結構及工作原理，對比分析兩者存在的諸多相似點，提出微電網(wǎng)儲能單元與APF組合裝置，進一步提出二者組合系統(tǒng)的結構設計方案。分析裝置諧波抑制、無功補償及UPS功能原理及裝置的工作模式，該裝置能在實現(xiàn)儲能單元并網(wǎng)調節(jié)微電網(wǎng)功率的同時，還可以發(fā)揮電能質量調節(jié)的功能。 對組合裝置的控制方法進行研究。建立DC-DC變換器數(shù)學模型，在傳統(tǒng)控制基礎上加入功率限制環(huán)節(jié)，確保儲能單元的穩(wěn)定運行。建立DC-AC變換器數(shù)學模型，研究該變換器在并網(wǎng)模式和UPS模式兩種不同工作模式下的控制策略，提出并網(wǎng)模式下基于復合校正技術的改進三角波比較控制方法，實現(xiàn)對DC-AC變換器的有效控制。研究組合裝置的電流指令合成方法及輸出電流限制方式。提出含前饋校正的直流母線電壓預測控制方法，實現(xiàn)對組合裝置直流母線電壓的有效控制。設計組合裝置的總控制器，，對鎖相環(huán)進行設計，實現(xiàn)裝置的精確鎖相。在對系統(tǒng)控制方法研究的基礎上，設計基于DSP+FPGA系統(tǒng)的軟件設計流程圖。 為驗證本文提出的組合裝置及控制方法的可行性及其運行效果，進行了詳細的仿真和實驗研究。結果表明，本裝置不僅能夠實現(xiàn)儲能單元并網(wǎng)調節(jié)微電網(wǎng)功率的功能，還可以發(fā)揮電能質量調節(jié)的功能，為解決微電網(wǎng)電能質量問題提供了一個新穎且成本較低的方法。
[Abstract]:As a powerful supplement of large power grid, microgrid plays a more and more important role in power system. However, the power quality of microgrid is seriously polluted by the addition of many nonlinear power electronic members. In order to solve the power quality problem of microgrid without increasing the cost, a combination of energy storage unit and APF for microgrid is studied to realize "one machine multi-power". In this paper, the principle and control method of microgrid energy storage unit combined with APF are studied, and the system structure and working principle of APF and micro-grid energy storage unit, which can improve the power quality of power system, are studied in detail. By comparing and analyzing the similarities between the two systems, an energy storage unit and an APF combination device are proposed, and the structural design scheme of the two combined systems is put forward. The harmonic suppression, reactive power compensation, UPS function principle and the working mode of the device are analyzed. The device can realize the power regulation of the microgrid while the energy storage unit is connected to the grid. The function of power quality regulation can also be brought into play. The control method of the combined device is studied. The mathematical model of DC-DC converter is established and the power limiting link is added on the basis of traditional control to ensure the stable operation of the energy storage unit. The mathematical model of DC-AC converter is established, and the control strategy of the converter in grid-connected mode and UPS mode is studied. An improved triangular wave comparison control method based on composite correction technique is proposed in grid-connected mode. The effective control of DC-AC converter is realized. The current command synthesis method and output current limiting mode of the combined device are studied. A predictive control method for DC bus voltage with feedforward correction is proposed to realize the effective control of DC bus voltage of the combined device. The main controller of the combined device is designed and the phase locked loop is designed to realize the precise phase lock of the device. Based on the research of system control method, the software design flow chart based on DSP FPGA system is designed. In order to verify the feasibility and operation effect of the combined device and control method proposed in this paper, the detailed simulation and experimental research are carried out. The results show that this device can not only realize the function of energy storage unit connected to grid to adjust the power of microgrid, but also can play the function of power quality regulation. It provides a novel and low cost method for solving the problem of power quality of microgrid.
【學位授予單位】：湖南工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM73

【參考文獻】

相關期刊論文 前10條

1 姚勇;朱桂萍;劉秀成;;電池儲能系統(tǒng)在改善微電網(wǎng)電能質量中的應用[J];電工技術學報;2012年01期

2 刁元均;鄒濱;蔡華斌;王正國;;淺析諧波的危害及電氣設計中的抑制和防范措施[J];電氣應用;2007年11期

3 王長永,金陶濤,張仲超;統(tǒng)一模型下單相電路諧波及無功電流檢測的研究[J];電力電子技術;2001年02期

4 王曉薇,程永華;基于DSP雙環(huán)控制的逆變電源設計[J];電力電子技術;2004年03期

5 魯宗相;王彩霞;閔勇;周雙喜;呂金祥;王云波;;微電網(wǎng)研究綜述[J];電力系統(tǒng)自動化;2007年19期

6 王守相;王慧;蔡聲霞;;分布式發(fā)電優(yōu)化配置研究綜述[J];電力系統(tǒng)自動化;2009年18期

7 張國駒;唐西勝;齊智平;;超級電容器與蓄電池混合儲能系統(tǒng)在微網(wǎng)中的應用[J];電力系統(tǒng)自動化;2010年12期

8 侯桂兵;涂春鳴;羅安;凡福華;孟金嶺;;微電網(wǎng)中APF接入位置與容量優(yōu)化配置方案[J];電力自動化設備;2012年05期

9 卓放;楊君;王兆安;;有源電力濾波器的發(fā)展動態(tài)及其應用[J];電氣自動化;2000年04期

10 張步涵;曾杰;毛承雄;金玉潔;王云玲;;電池儲能系統(tǒng)在改善并網(wǎng)風電場電能質量和穩(wěn)定性中的應用[J];電網(wǎng)技術;2006年15期

相關博士學位論文 前1條

1 曾杰;可再生能源發(fā)電與微網(wǎng)中儲能系統(tǒng)的構建與控制研究[D];華中科技大學;2009年

本文編號：1998122