【摘要】：隨著電網(wǎng)中非線性負荷的大量涌入及新能源的廣泛使用，電能的污染日益嚴重。因此，對電能質(zhì)量問題進行必要的監(jiān)控和分析，進而改善電網(wǎng)的電能質(zhì)量顯得尤為必要。 為應(yīng)對層出不窮的電能質(zhì)量問題，實現(xiàn)對電能質(zhì)量的實時監(jiān)測與分析，本文以TI公司生產(chǎn)的超低功耗芯片MSP430F5438作為管理核心，設(shè)計一款基于ADC+DSP+MCU的電能質(zhì)量分析儀。該分析儀除了能準確、快速測量基本電參數(shù)外，還能實時監(jiān)測電網(wǎng)的電能質(zhì)量事件，并將基本電參數(shù)和事件數(shù)據(jù)快速的存儲和顯示。該設(shè)計具備程序移植性強、低功耗、測試精度高、抗干擾能力強、性能穩(wěn)定、人機交互好等優(yōu)點，具有廣闊的市場前景和應(yīng)用價值。 本文設(shè)計分由五部分組成：第1章為緒論，簡要介紹項目的研究背景和研究意義、電能質(zhì)量的概念及相關(guān)的國家標(biāo)準、電能質(zhì)量檢測技術(shù)的研究現(xiàn)狀、發(fā)展趨勢和項目的來源；第2章主要介紹國標(biāo)規(guī)定的各個電能質(zhì)量指標(biāo)的實現(xiàn)方法，詳細介紹基于萊夫-文森特窗多譜線插值FFT的諧波分析算法；第3章主要介紹電能質(zhì)量分析儀的設(shè)計要求和硬件設(shè)計思路，分別闡述各模塊的設(shè)計：復(fù)位及掉電檢測模塊、數(shù)據(jù)采集與處理模塊、人機交互模塊、數(shù)據(jù)存儲模塊、GPS時鐘同步模塊和RS-485通信模塊；第4章簡要介紹電能質(zhì)量分析儀的軟件開發(fā)環(huán)境、模塊化設(shè)計原則、電能質(zhì)量分析儀的軟件主程序，并分別介紹其中的數(shù)據(jù)采集和處理模塊、人機交互模塊、MCU與DSP的雙向通信模塊、數(shù)據(jù)存儲模塊、GPS時鐘同步模塊和RS-485通信模塊，并著重介紹系統(tǒng)的安全可靠性設(shè)計；第5章主要介紹電能質(zhì)量分析儀的校準方法，以電壓偏差的校準為例介紹其校準步驟，并對電能質(zhì)量分析儀電能質(zhì)量參數(shù)的測量準確度進行檢驗，最后進行誤差分析。 測試結(jié)果和檢測情況表明，本文設(shè)計的電能質(zhì)量分析儀的電能質(zhì)量參數(shù)測量誤差滿足GB/T19862—2005《電能質(zhì)量監(jiān)測設(shè)備通用要求》，，達到電能質(zhì)量分析儀A類標(biāo)準，同時人機交互界面友好，運行安全、穩(wěn)定、可靠。最后總結(jié)本文的創(chuàng)新點及不足，指出下階段的研究工作和展望。
[Abstract]:With the influx of nonlinear loads and the widespread use of new energy sources, the pollution of electric energy is becoming more and more serious. Therefore, it is necessary to monitor and analyze the power quality problem and improve the power quality. In order to deal with the endless power quality problems and realize the real-time monitoring and analysis of the power quality, this paper designs a power quality analyzer based on ADC DSP MCU with the ultra-low power chip MSP430F5438 produced by TI as the management core. In addition to accurate and rapid measurement of basic electrical parameters, the analyzer can also monitor power quality events in real time, and store and display the basic electrical parameters and event data quickly. The design has the advantages of strong portability, low power consumption, high testing precision, strong anti-interference ability, stable performance and good human-computer interaction. It has broad market prospect and application value. The design of this paper consists of five parts: the first chapter is the introduction, briefly introduces the research background and significance of the project, the concept of power quality and related national standards, the research status of power quality detection technology, the development trend and the source of the project; Chapter 2 mainly introduces the realization method of each power quality index stipulated by national standard, and introduces the harmonic analysis algorithm based on Lev-Vincent window multi-line interpolation FFT in detail. Chapter 3 mainly introduces the design requirements and hardware design ideas of the power quality analyzer, and expounds the design of each module: reset and power failure detection module, data acquisition and processing module, man-machine interaction module, respectively. Chapter 4 briefly introduces the software development environment of power quality analyzer, the principle of modular design, the software main program of power quality analyzer, The data acquisition and processing module, the man-machine interaction module, the bidirectional communication module between DSP and man-machine interaction module, the data storage module, the RS-485 clock synchronization module and the RS-485 communication module are introduced respectively. The security and reliability design of the system is emphasized. Chapter 5 mainly introduces the calibration method of power quality analyzer, taking the calibration of voltage deviation as an example, introduces the calibration steps, and tests the measuring accuracy of power quality parameters of power quality analyzer. Finally, the error analysis is carried out. The test results and test results show that the power quality parameter measurement error of the power quality analyzer designed in this paper meets the general requirements of the GB/T19862-2005 power quality monitoring equipment and meets the class A standard of the power quality analyzer. At the same time, the man-machine interface is friendly, safe, stable and reliable. Finally, this paper summarizes the innovation and shortcomings, pointing out the next stage of research work and prospects.
【學(xué)位授予單位】：湖南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM711

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