本文選題：電能質(zhì)量　切入點：監(jiān)測裝置　出處：《電子科技大學》2014年碩士論文　論文類型：學位論文

【摘要】：隨著電網(wǎng)規(guī)模的不斷擴大,電力系統(tǒng)中大量非線性和沖擊性負荷使用使得電能質(zhì)量問題日益突出,為實現(xiàn)電能質(zhì)量的區(qū)域監(jiān)測,研究和設(shè)計一種分布式電能質(zhì)量監(jiān)測裝置顯得尤為重要。而電力市場化改革的不斷深入,為達到電能作為商品“按質(zhì)論價、優(yōu)質(zhì)優(yōu)價”目標,實現(xiàn)電能質(zhì)量全面科學地評估具有重要意義。本文結(jié)合國內(nèi)外電能質(zhì)量監(jiān)測裝置現(xiàn)狀及發(fā)展趨勢,為實現(xiàn)電能質(zhì)量監(jiān)測與評估,設(shè)計基于ARM Cortex-M3內(nèi)核的LPC1768與DSP內(nèi)核的ADE7880相結(jié)合的高精度、多功能的分布式電能質(zhì)量監(jiān)測裝置,并提出電能質(zhì)量單項評估和綜合評估模型。首先,本文根據(jù)國內(nèi)外相關(guān)標準,總結(jié)歸納各電能質(zhì)量監(jiān)測參數(shù)的測量原理和數(shù)學模型;依據(jù)實際需求分析,設(shè)計分布式電能質(zhì)量監(jiān)測裝置硬件系統(tǒng),主要包括監(jiān)測數(shù)據(jù)采集模塊、系統(tǒng)主控模塊、分布式網(wǎng)絡(luò)通信設(shè)計以及電源系統(tǒng)設(shè)計;并通過干擾源分析采取相應(yīng)措施提高監(jiān)測裝置抗干擾能力。其次,研究電能質(zhì)量評估相關(guān)理論,應(yīng)用概率數(shù)理統(tǒng)計、矢量代數(shù)法和模糊數(shù)學法,提出本課題監(jiān)測裝置電能質(zhì)量單項評估和綜合評估模型;優(yōu)化改進單項指標量化等級劃分和綜合評估權(quán)重矢量;結(jié)合實際算例分析驗證電能質(zhì)量評估模型科學合理性。最后,搭建測試平臺,完成監(jiān)測裝置整機功能和精度要求測試驗證,并分析測試結(jié)果,提出相應(yīng)改進措施。測試表明,本監(jiān)測裝置完成各參數(shù)監(jiān)測功能并具有較高測量精度,功能上包括基本參數(shù)測量、電網(wǎng)諧波分析、電能事件監(jiān)測以及分布式網(wǎng)絡(luò)通信;精度上電壓有效值為±0.5%、頻率為±0.01Hz、諧波分析符合國標GB/T 19862-2005 A級標準;整機基本達到預期設(shè)計目標。
[Abstract]:With the continuous expansion of power network scale, a large number of nonlinear and impact load use in power system makes the power quality problem more and more prominent. In order to realize the regional monitoring of power quality, It is very important to study and design a kind of distributed power quality monitoring device. It is of great significance to realize the comprehensive and scientific evaluation of power quality. In order to realize the monitoring and evaluation of power quality, this paper combines the current situation and development trend of power quality monitoring devices at home and abroad. This paper designs a high precision, multi-function distributed power quality monitoring device based on LPC1768 based on ARM Cortex-M3 kernel and ADE7880 based on DSP kernel, and puts forward a single evaluation and comprehensive evaluation model of power quality. This paper summarizes the measuring principle and mathematical model of power quality monitoring parameters, designs the hardware system of distributed power quality monitoring device according to the actual demand analysis, mainly includes monitoring data acquisition module, system main control module, Distributed network communication design and power supply system design, and through the interference source analysis to take appropriate measures to improve the anti-jamming ability of monitoring devices. Secondly, research power quality evaluation theory, apply probability mathematical statistics, Vector algebra method and fuzzy mathematics method are used to put forward the single evaluation and comprehensive evaluation model of power quality of the monitoring device, and to optimize and improve the quantization of single index and the weight vector of comprehensive evaluation. The scientific rationality of power quality evaluation model is verified by practical examples. Finally, the test platform is built to test and verify the function and precision of the whole monitoring device, and the test results are analyzed, and the corresponding improvement measures are put forward. The test results show that, The monitoring device completes the monitoring function of various parameters and has a high measurement precision, including basic parameter measurement, power network harmonic analysis, power event monitoring and distributed network communication. The effective value of voltage is 鹵0.5 and the frequency is 鹵0.01 Hz in accuracy. The harmonic analysis conforms to the national standard GB/T 19862-2005 A standard, and the whole machine basically achieves the expected design goal.
【學位授予單位】：電子科技大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TM76

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本文編號：1626351