The electrical power Grid is often referred to as one of the most complex man- made systems on Earth. Its importance to all aspects of our daily lives, economic stability, and national security cannot be overstated, and the need for an updated, secure, resilient, and smarter power Grid infrastructure is increasingly recognized and supported by policy makers and market forces.
上傳時(shí)間： 2020-06-07
上傳用戶：shancjb
One of the predominant topics in the domain of the emerging Smart Grid can be seen in standardization. With the combination of existing protection and automa- tion technology with upcoming ICT-based solutions, different interoperability is- sues arise when technologies have to be combined in the infrastructure. Standards have proven to be one of the most striking solutions to actually cope with this topic. Since 2008, this topic has gained much attention in various political and technical agendas.
標(biāo)簽： Standardization Smart Grids in
上傳時(shí)間： 2020-06-07
上傳用戶：shancjb
Today, electric power transmission systems should face many demanding chal- lenges, which include balancing between reliability, economics, environmental, and other social objectives to optimize the Grid assets and satisfy the growing electrical demand. Moreover, the operational environment of transmission systems is becoming increasingly rigorous due to continually evolving functions of interconnected power networks from operation jurisdiction to control responsibly – coupled with the rising demand and expectation for reliability.
標(biāo)簽： Monitoring Protection Wide Area
上傳時(shí)間： 2020-06-07
上傳用戶：shancjb
The large-scale deployment of the smart Grid (SG) paradigm could play a strategic role in supporting the evolution of conventional electrical Grids toward active, flexible and self- healing web energy networks composed of distributed and cooperative energy resources. From a conceptual point of view, the SG is the convergence of information and operational technologies applied to the electric Grid, providing sustainable options to customers and improved security. Advances in research on SGs could increase the efficiency of modern electrical power systems by: (i) supporting the massive penetration of small-scale distributed and dispersed generators; (ii) facilitating the integration of pervasive synchronized metering systems; (iii) improving the interaction and cooperation between the network components; and (iv) allowing the wider deployment of self-healing and proactive control/protection paradigms.
標(biāo)簽： Computational Intelligence
上傳時(shí)間： 2020-06-10
上傳用戶：shancjb
基于TMS320F2812 光伏并網(wǎng)發(fā)電模擬裝置PROTEL設(shè)計(jì)原理圖+PCB+軟件源碼+WORD論文文檔,硬件采用2層板設(shè)計(jì)，PROTEL99SE 設(shè)計(jì)的工程文件，包括完整的原理圖和PCB文件，可以做為你的學(xué)習(xí)設(shè)計(jì)參考。 摘要：本文實(shí)現(xiàn)了一個(gè)基于TMS320F2812 DSP芯片的光伏并網(wǎng)發(fā)電模擬裝置，采用直流穩(wěn)壓源和滑動變阻器來模擬光伏電池。通過TMS320F2812 DSP芯片ADC模塊實(shí)時(shí)采樣模擬電網(wǎng)電壓的正弦參考信號、光伏電池輸出電壓、負(fù)載電壓電流反饋信號等。經(jīng)過數(shù)據(jù)處理后，用PWM模塊產(chǎn)生實(shí)時(shí)的SPWM 波，控制MOSFET逆變?nèi)珮蜉敵稣也ā１疚挠肞I控制算法實(shí)現(xiàn)了輸出信號對給定模擬電網(wǎng)電壓的正弦參考信號的頻率和相位跟蹤，用恒定電壓法實(shí)現(xiàn)了光伏電池最大功率點(diǎn)跟蹤（MPPT），從而達(dá)到模擬并網(wǎng)的效果。另外本裝置還實(shí)現(xiàn)了光伏電池輸出欠壓、負(fù)載過流保護(hù)功能以及光伏電池輸出欠壓、過流保護(hù)自恢復(fù)功能、聲光報(bào)警功能、孤島效應(yīng)的檢測、保護(hù)與自恢復(fù)功能。系統(tǒng)測試結(jié)果表明本設(shè)計(jì)完全滿定設(shè)計(jì)要求。關(guān)鍵詞：光伏并網(wǎng)，MPPT，DSP Photovoltaic Grid-connected generation simulator Zhangyuxin，Tantiancheng，Xiewuyang(College of Electrical Engineering, Chongqing University)Abstract: This paper presents a photovoltaic Grid-connected generation simulator which is based on TMS320F2812 DSP, with a DC voltage source and a variable resistor to simulate the characteristic of photovoltaic cells. We use the internal AD converter to real-time sampling the referenced Grid voltage signal, outputting voltage of photovoltaic, feedback outputting voltage and current signal. The PWM module generates SVPWM according to the calculation of the real-time sampling data, to control the full MOSFET inverter bridge output sine wave. We realized that the output voltage of the simulator can track the frequency and phase of the referenced Grid voltage with PI regulation, and the maximum photovoltaic power tracking with constant voltage regulation, thereby achieved the purpose of Grid-connected simulation. Additionally, this device has the over-voltage and over-current protection, audible and visual alarm, islanding detecting and protection, and it can recover automatically. The testing shows that our design is feasible.Keywords: Photovoltaic Grid-connected，MPPT，DSP 目錄引言 11. 方案論證 11.1. 總體介紹 11.2. 光伏電池模擬裝置 11.3. DC-AC逆變橋 11.4. MOSFET驅(qū)動電路方案 21.5. 逆變電路的變頻控制方案 22. 理論分析與計(jì)算 22.1. SPWM產(chǎn)生 22.1.1. 規(guī)則采樣法 22.1.2. SPWM 脈沖的計(jì)算公式 32.1.3. SPWM 脈沖計(jì)算公式中的參數(shù)計(jì)算 32.1.4. TMS320F2812 DSP控制器的事件管理單元 42.1.5. 軟件設(shè)計(jì)方法 62.2. MPPT的控制方法與參數(shù)計(jì)算 72.3. 同頻、同相的控制方法和參數(shù)計(jì)算 8
標(biāo)簽： tms320f2812 光伏 并網(wǎng)發(fā)電 模擬 protel pcb
上傳時(shí)間： 2021-11-02
上傳用戶：
TM1629是一款帶鍵盤掃描和LED掃描驅(qū)動的國貨芯片，芯片默認(rèn)配套為使用共陰數(shù)碼管； 但考慮到降低物料庫存種類，選用了共陽數(shù)碼管由于用了共陽的數(shù)碼管，LED原來的段碼引腳現(xiàn)在要接到1629芯片Grid引腳上，原理的數(shù)碼管列掃描信號接到1629芯片SED引腳上；亂套了。。。。用共陰數(shù)碼管，往芯片送一個(gè)字節(jié)，對應(yīng)一個(gè)數(shù)碼管的7個(gè)筆段+1個(gè)數(shù)碼管，這種顯示數(shù)據(jù)關(guān)系簡單明了。現(xiàn)在用共陽數(shù)碼管，往芯片送一個(gè)字節(jié)，對應(yīng)是8個(gè)數(shù)碼管的其中一個(gè)段碼的數(shù)據(jù)，送2個(gè)字節(jié)表示16個(gè)數(shù)碼管的其中一個(gè)筆段的數(shù)據(jù)；也就是說，每2個(gè)字節(jié)描述了16個(gè)數(shù)碼管的其中一個(gè)筆段的狀態(tài)， 送16個(gè)字節(jié)描述了16個(gè)數(shù)碼管的8個(gè)筆段的狀態(tài)；這時(shí)候就需要一個(gè)函數(shù)來轉(zhuǎn)換顯示和筆段的數(shù)據(jù)；顯示數(shù)字的筆段定義
上傳時(shí)間： 2022-05-13
上傳用戶：
蟲蟲下載站版權(quán)所有 京ICP備2021023401號-1
