本文選題：電能質(zhì)量　切入點(diǎn)：三相不平衡　出處：《湖南大學(xué)》2014年碩士論文

【摘要】：電能在現(xiàn)代社會(huì)中發(fā)揮著越來越重要的作用，電能在終端能源消費(fèi)中所占比例代表著一個(gè)國家的科技發(fā)展程度。隨著越來越多不平衡負(fù)載在電力系統(tǒng)中的使用，三相不平衡現(xiàn)象日益嚴(yán)重。電力三相不平衡不僅影響用戶端設(shè)備的正常運(yùn)行，還可能引起供電電壓的閃變、波動(dòng)，增加線路損耗，嚴(yán)重影響電能質(zhì)量。三相不平衡等電能質(zhì)量問題日益引起人們的重視，國內(nèi)外針對(duì)電能質(zhì)量頒布了多個(gè)標(biāo)準(zhǔn)。 為了實(shí)現(xiàn)對(duì)電力三相不平衡實(shí)時(shí)在線檢測，本文以DSP處理器TMS320VC5502為數(shù)據(jù)分析核心，以飛思卡爾ARM處理器為管理單元核心，設(shè)計(jì)一個(gè)具有多參數(shù)分析并集顯示與存儲(chǔ)為一體的三相不平衡在線檢測系統(tǒng)。由于DSP運(yùn)算功能強(qiáng)大，該三相不平衡在線檢測系統(tǒng)能計(jì)算基本電參量，并具有三相不平衡事件分析功能，借助ARM的強(qiáng)大管理功能可實(shí)現(xiàn)實(shí)時(shí)顯示及數(shù)據(jù)的存儲(chǔ)。該設(shè)計(jì)方案結(jié)構(gòu)簡單、軟件可移植性強(qiáng)、成本低、功耗低、可靠性高，具有廣闊的市場前景和應(yīng)用價(jià)值。 全文共分為五個(gè)部分，，第1章對(duì)電能質(zhì)量背景知識(shí)、電能質(zhì)量標(biāo)準(zhǔn)、檢測技術(shù)的發(fā)展進(jìn)行介紹，并總結(jié)三相不平衡的研究現(xiàn)狀；第2章詳細(xì)介紹各電能質(zhì)量參數(shù)的計(jì)算方法，并提出一種新的三相不平衡度快速相量算法；第3章講解系統(tǒng)的構(gòu)成與工作原理，對(duì)系統(tǒng)的整體設(shè)計(jì)及各模塊進(jìn)行介紹；第4章講解系統(tǒng)的軟件設(shè)計(jì)，對(duì)軟件的開發(fā)平臺(tái)，各重要軟件模塊進(jìn)行介紹；第5章對(duì)系統(tǒng)的調(diào)試與結(jié)果進(jìn)行分析，其中重點(diǎn)分析新型三相不平衡快速相量算法的實(shí)驗(yàn)結(jié)果，數(shù)據(jù)的校準(zhǔn)方式及對(duì)新型三相不平衡度檢測算法的誤差進(jìn)行分析；結(jié)論對(duì)全文進(jìn)行總結(jié)，給出研究的不足，并對(duì)進(jìn)一步研究給出展望。 MATLAB仿真及DSP實(shí)際運(yùn)算數(shù)據(jù)結(jié)果表明本文提出的三相不平衡度新型算法相對(duì)于標(biāo)準(zhǔn)規(guī)定方法能更快更精確地完成三相不平衡的事件分析，具推廣應(yīng)用價(jià)值。測試結(jié)果表明，本文設(shè)計(jì)的三相不平衡在線檢測系統(tǒng)可滿足三相不平衡事件的實(shí)時(shí)在線檢測要求，各種電參數(shù)的測量在DSP中的計(jì)算結(jié)果可達(dá)到標(biāo)準(zhǔn)要求。
[Abstract]:Electric energy plays a more and more important role in modern society. The proportion of electric energy in terminal energy consumption represents the development of science and technology in a country. As more and more unbalanced loads are used in power system, The phenomenon of three-phase imbalance is becoming more and more serious. Power three-phase imbalance not only affects the normal operation of the equipment at the user side, but also may cause the flicker and fluctuation of the supply voltage and increase the line loss. People pay more and more attention to power quality problems, such as three-phase imbalance, which seriously affect power quality. Many standards have been issued for power quality at home and abroad. In order to realize the real-time on-line detection of power three-phase imbalance, the DSP processor TMS320VC5502 is used as the data analysis core, and the Freescale ARM processor is used as the management unit core. A three-phase unbalance on-line detection system with multi-parameter analysis, display and storage is designed. Because of the powerful operation function of DSP, the three-phase unbalanced on-line detection system can calculate the basic electrical parameters. With the help of the powerful management function of ARM, the real-time display and data storage can be realized. The design scheme is simple, the software is portable, the cost is low, the power consumption is low, and the reliability is high. It has broad market prospect and application value. The paper is divided into five parts. Chapter 1 introduces the development of power quality background knowledge, power quality standards, detection technology, and summarizes the research status of three-phase imbalance. Chapter 2 introduces the calculation methods of power quality parameters in detail. A new fast phasor algorithm for three-phase unbalance degree is proposed. Chapter 3 explains the composition and working principle of the system, introduces the whole system design and each module, and chapter 4 explains the software design of the system, and the software development platform. Chapter 5 analyzes the debugging and results of the system, especially the experimental results of a new three-phase unbalanced fast phasor algorithm. The calibration method of the data and the error of the new three-phase unbalance detection algorithm are analyzed, and the conclusion is summarized, the deficiency of the research is given, and the prospect of further research is given. The results of MATLAB simulation and DSP actual operation data show that the new algorithm of three-phase unbalance degree proposed in this paper can accomplish the event analysis of three-phase imbalance more quickly and accurately than the standard method, and it is worth popularizing and applying. The test results show that, The three-phase unbalanced on-line detection system designed in this paper can meet the requirements of real-time on-line detection of three-phase unbalanced events, and the calculation results of various electrical parameters in DSP can meet the standard requirements.
【學(xué)位授予單位】：湖南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM930

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