家庭微電網(wǎng)控制與應用系統(tǒng)設計
本文選題:微電網(wǎng) + 可再生能源。 參考:《成都理工大學》2017年碩士論文
【摘要】:隨著微電網(wǎng)技術(shù)、可再生能源發(fā)電技術(shù)、智能儲電技術(shù)的發(fā)展,尤其是太陽能、風能和生物質(zhì)能為主的可再生能源發(fā)電技術(shù)以及以蓄電池技術(shù)和超級電容技術(shù)為主的儲電技術(shù)的發(fā)展,針對公共供電網(wǎng)普遍存在的生活用電中白天用電峰值時負載過大,夜晚用電低谷電力被浪費的現(xiàn)象,在深入分析國內(nèi)外微電網(wǎng)發(fā)展動態(tài)及我國微電網(wǎng)發(fā)展現(xiàn)狀和方向的基礎上,設計了家庭微電網(wǎng)控制與應用系統(tǒng)。系統(tǒng)集發(fā)電模塊、儲能模塊、控制模塊和應用模塊于一體。通過家庭微電網(wǎng)的電池墻進行電網(wǎng)負載調(diào)節(jié),在用電低谷時存儲電能,提高電網(wǎng)使用效率,同時結(jié)合迅速發(fā)展的可再生能源發(fā)電技術(shù),收集太陽能、風能等間斷時間的發(fā)電,經(jīng)蓄電池、超級電容進行存儲,最后向以LED燈為代表的節(jié)能用電設備提低壓、可調(diào)控的直流電源,尤其是超級電容可向負載瞬時提供較大電流,以滿足充電樁之類的瞬間大電流需求場合的應用。系統(tǒng)的特點主要包括:利用晝夜供電的峰谷特征,夜晚低價購電并存儲,既改善了國家電網(wǎng)24小時供電的均衡負載分布,提高電力資源的利用率,也為用戶節(jié)省了電費;利用用戶屋頂上安裝的太陽能光伏發(fā)電板、用戶墻體和窗戶上安裝的玻璃光伏發(fā)電板采集日照時的太陽能并存儲;利用新型鋰電池和超級電容作為電能的儲能設備做成電池墻,既節(jié)省了墻體材料和電池的放置空間,又達到儲能蓄電目的;利用國家大力推廣的直流、低壓、節(jié)能負載作為微電網(wǎng)的負載,便于電源的管理、監(jiān)測和使用;利用數(shù)字控制技術(shù)進行用戶負載的電壓/電流監(jiān)測和管理,還可在微電網(wǎng)電量充余的情況下,向其他用戶輸出供電,通過用戶售電增加用戶收益來降低用戶投入成本,推動微電網(wǎng)的發(fā)展。在硬件設計方面,系統(tǒng)選用太陽能光伏板作為家庭微電網(wǎng)的電力來源,選用12V鋰電池與單體2.7V超級電容設計電路構(gòu)成電池墻,作為家庭微電網(wǎng)的儲電設備;選用Altera公司的EP4CE10E22C8N芯片作為控制系統(tǒng)的硬件,完成自動合理連接電力來源與儲能設備之間關(guān)系的功能及電壓選擇輸出與電壓檔位調(diào)節(jié)功能;選用微處理芯片STC89C5A60S2作為家庭微電網(wǎng)應用模塊控制器實現(xiàn)電壓與電流的測量。應用WiFi技術(shù)實現(xiàn)太陽能光伏板與儲能設備以及儲能設備與微處理器的通信與控制,應用光電耦合技術(shù)實現(xiàn)控制系統(tǒng)對儲能設備和電力來源匹配的自動開關(guān)控制功能以及電壓輸出檔位的自動開關(guān)控制功能,應用模數(shù)轉(zhuǎn)換技術(shù)實現(xiàn)將模擬電壓數(shù)據(jù)通過微處理器以數(shù)字電壓形式顯示的功能。在軟件設計方面,控制系統(tǒng)軟件開發(fā)借助硬件描述語言verilog在Altera公司綜合性PLD/FPGA開發(fā)軟件Quartus II中編程實現(xiàn),內(nèi)容包括:通過并行傳輸方式實現(xiàn)四位電源控制信號的讀取以及四位電源控制信號的控制功能;通過研究串口數(shù)據(jù)字符傳輸格式及串口傳輸速率,編程實現(xiàn)將50MHz的FPGA芯片與數(shù)據(jù)傳輸速率為9600Bd/s的WiFi模塊利用串口進行通信;通過串口傳輸方式編程實現(xiàn)輸出電壓檔位選擇與輸出電壓大小選擇功能。通過對FPGA控制模塊串口收發(fā)數(shù)據(jù)和電源控制使用專業(yè)EDA仿真工具ModelSim進行仿真,對微處理模塊模數(shù)轉(zhuǎn)換和電壓顯示使用Proteus進行仿真,以及對移動終端的功能進行測試,驗證各模塊達到預期設計的功能。測試表明,達到了家庭微電網(wǎng)控制與應用系統(tǒng)的預定設計要求。
[Abstract]:With the development of the micro grid technology, renewable energy generation technology and intelligent storage technology, especially the renewable energy technology based on solar energy, wind energy and biomass energy, and the development of storage and electric storage technology based on battery technology and super capacitor technology, the peak value of daytime power consumption in living electricity is common in public power supply grid. When the load is too large and the electric power is wasted at night, the family microgrid control and application system is designed on the basis of the in-depth analysis of the development of micro grid at home and abroad and the development and direction of China's micro grid. The system integrates the power generation module, energy storage module, control module and Application module. The battery wall regulates the load of the power grid, stores the electric energy in the low valley and improves the use efficiency of the power grid. At the same time, it combines the rapidly developing renewable energy generation technology, collects solar energy, wind energy and other discontinuous time power generation, stores the battery and super capacitor. Finally, the low voltage can be raised to the energy saving equipment represented by the LED lamp. The DC power supply, especially the super capacitor can provide large current to the load instantaneously to meet the application of the instant large current demand, such as charging pile. The main features of the system include: using the peak and valley characteristics of the day and night power supply, purchasing electricity at night at low price and storing it at night, improving the balanced load distribution of the 24 hour power supply of the national electrical appliance network and improving the electricity The utilization of force resources also saves the electricity fee for the users; using the solar photovoltaic power board installed on the roof of the user's roof, the glass photovoltaic power board installed on the wall and the window to collect solar energy and storage at sunshine; use the new lithium battery and supercapacitor as the energy storage equipment to make the battery wall, which saves the wall material. With the storage space of the battery, the energy storage and storage purpose is achieved. Using the DC, low voltage and energy saving loads promoted by the state as the load of the microgrid, it is easy to manage, monitor and use the power supply, and use the digital control technology to monitor and manage the voltage / current of the user load, and to other use in the case of the charge surplus of the microgrid. In the hardware design, the system selects the solar photovoltaic panels as the source of the family microgrid, and selects the 12V lithium battery and the single 2.7V supercapacitor to form the battery wall, which is used as the home microgrid. The EP4CE10E22C8N chip of Altera company is selected as the hardware of the control system. The function of the automatic and reasonable connection between the power source and the energy storage equipment and the function of voltage selection output and voltage shift are completed, and the micro processing chip STC89C5A60S2 is selected as the controller of the home microgrid Application module to measure the voltage and current. The WiFi technology is applied to realize the communication and control of solar photovoltaic board and energy storage equipment, energy storage equipment and microprocessor. The automatic switch control function of the control system to the matching of energy storage equipment and power source and the automatic switch control function of the voltage output gear are realized by the photoelectric coupling technology, and the analog digital conversion technology is applied to realize the application of the technology of analog to digital conversion. The function of analog voltage data is displayed in the form of a microprocessor in the form of a digital voltage. In software design, the software development of the control system is programmed with the Hardware Description Language Verilog in the integrated PLD/FPGA development software Quartus II of the Altera company. The content includes: reading the four bit power control signal by parallel transmission. And the control function of four power supply control signals; through the study of serial data character transmission format and serial port transmission rate, the FPGA chip of 50MHz and the WiFi module of the data transmission rate of 9600Bd/s are communicated with the serial port, and the selection of the output voltage level and the size of the output voltage are selected by the serial port transmission programming. Function. Through the simulation of the FPGA control module's serial port data and power control using the professional EDA simulation tool ModelSim, the analog digital conversion and voltage display of the micro processing module are simulated with Proteus, and the function of the mobile terminal is tested to verify the function of each module to achieve the expected design. The test shows that the family has reached the home. Predetermined design requirements for microgrid control and application systems.
【學位授予單位】:成都理工大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:TM727
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