基于虛擬儀器的電網(wǎng)電氣參數(shù)測試設(shè)計

電氣自動化論文編號:ZD496  論文字數(shù):33252,頁數(shù):55，有開題報告，任務(wù)書，文獻綜述， 程序

 
 目    錄

摘要………………………………………………………………………………………Ⅰ
Abstract…………………………………………………………………………………II
第一章  緒論……………………………………………………………………………1
 1.1  電網(wǎng)電氣參數(shù)測量簡介………………………………………………………4
        1.1.1  參數(shù)測量的方法…………………………………………………………4
        1.1.2  參數(shù)測量發(fā)展前景………………………………………………………5
 1.2電網(wǎng)主要電氣參數(shù)測量方案的確定……………………………………………9
第二章  虛擬儀器技術(shù)…………………………………………………………………9
 2.1  虛擬儀器技術(shù)的概念……………………………………………………………9
 2.2  虛擬儀器的發(fā)展…………………………………………………………………10
    2.2.1  虛擬儀器的發(fā)展史………………………………………………………10
    2.2.2  虛擬儀器的現(xiàn)狀…………………………………………………………12
 2.3  虛擬儀器的軟硬件構(gòu)成………………………………………………………15
     2.3.1  虛擬儀器的硬件構(gòu)成……………………………………………………15
     2.3.2  虛擬儀器的軟件構(gòu)成……………………………………………………18
 2.4  虛擬儀器技術(shù)的核心及特點…………………………………………………20
第三章  電網(wǎng)主要電氣參數(shù)的測量算法及試驗方法研究……………………20
 3.1  電壓、電流的測量……………………………………………………………20
 3.1.1  有效值的測量……………………………………………………………20
 3.1.2  峰值的測量……………………………………………………………… 22
 3.2  相位差的測量………………………………………………………………22
 3.3  功率的測量……………………………………………………………………24
        3.3.1  有功功率的測量…………………………………………………………24
        3.3.2  無功功率的測量…………………………………………………………24
第四章  軟件設(shè)計……………………………………………………………………27
 4.1  概述……………………………………………………………………………27
 4.2  主面版的設(shè)計…………………………………………………………………27
 4.3  電壓、電流的測定……………………………………………………………28
    4.3.1  算法的確定………………………………………………………………28
    4.3.2  前面板的設(shè)計……………………………………………………………29
    4.3.3  后面板的設(shè)計……………………………………………………………30
 4.4  相位差的測定…………………………………………………………………31
    4.4.1  算法的確定與程序框圖…………………………………………………31
    4.4.2  前面板的設(shè)計……………………………………………………………34
    4.4.3  后面板的設(shè)計……………………………………………………………35
 4.5  功率的測定……………………………………………………………………36
 4.5.1  算法及其程序框圖……………………………………………………36
 4.5.2  前面板的設(shè)計…………………………………………………………37
 4.5.3  后面板的設(shè)計…………………………………………………………38
第五章  硬件設(shè)計……………………………………………………………………39
 5.1  傳感器的研究…………………………………………………………………39
        5.1.1  常見傳感器的原理及其發(fā)展方向……………………………………39
        5.1.2  傳感器在本課題中的應(yīng)用……………………………………………40
 5.2  低通濾波器的原理……………………………………………………………41
 5.3  數(shù)據(jù)采集卡的研究……………………………………………………………42
 5.3.1  數(shù)據(jù)采集方法…………………………………………………………42
 5.3.2  pci2006數(shù)據(jù)采集卡……………………………………………………42
結(jié)論………………………………………………………………………………………46
參考文獻…………………………………………………………………………………47
致謝………………………………………………………………………………………48

摘 要：本系統(tǒng)主要是利用NI公司的虛擬儀器軟件Labview來實現(xiàn)參數(shù)測量的，是虛擬儀器測試技術(shù)的一種。此系統(tǒng)具有測量精度高、便攜、升級簡單、適應(yīng)面廣等優(yōu)點。
 電網(wǎng)電氣參數(shù)測試系統(tǒng)是由軟件模塊和硬件模塊組成。軟件模塊包括電壓、電流模塊、相位差模塊、功率模塊組成。這一部分的設(shè)計主要是利用NI公司的Labview軟件完成設(shè)計，在其中完成系統(tǒng)的計算、處理和顯示等過程。其中電壓、電流模塊含有其有效值和峰值的測量，功率模塊包含有功功率和無功功率的測量。
 硬件模塊由傳感器、信號調(diào)理電路、PCI數(shù)據(jù)采集卡組成。電網(wǎng)信號由傳感器接過來，經(jīng)信號調(diào)理電路把信號調(diào)理到PCI卡所要求的值，最后經(jīng)由PCI卡完成數(shù)據(jù)采集、A/ D轉(zhuǎn)換或D/A轉(zhuǎn)換，轉(zhuǎn)換成數(shù)字量輸入電腦經(jīng)軟件處理后便可得到所測參數(shù)的值。
 關(guān)鍵詞：虛擬儀器；Labview；電網(wǎng)電氣參數(shù)；信號調(diào)理

 
Abstract: This system is mainly the virtual instrument software Labview that makes use of the company of NI to carry out the parameter diagraph of, is a kind of the virtual instrument test technique. This system has the accuracy of diagraph high, hold, upgrade then simple, adapt to face wide etc. advantage.
 The charged barbed wire net electricity parameter test system is to be constitute by the software mold piece and hardware mold piece. The software mold piece includes the electric voltage, electric current mold piece, phase shift mold piece, the power mold piece to constitute. The design of this part mainly is a software of Lab view that makes use of the company of NI to complete the design, completing the processes such as calculation, processing and manifestation etc. of the system therein. Among them the electric voltage, the electric current mold piece diagraph that implies its valid value and max and min value, the power mold piece include has a great achievement the power and has no power of diagraph.
 The hardware mold piece from spread the feeling machine, signal to adjust to manage the electric circuit, data of PCI to collect the card to constitute. The charged barbed wire net signal from spread the feeling machine to connect to come over, was adjust by signal to manage the electric circuit the value that the signal adjusts to manage the PCI card to request, the end completes the data to collect through the PCI card, the A/ D convert or the D/ A convert, convert to become the numerical quantity importation computer and can get then through the software processing the value of measure the parameter.
Keyword: Virtual instrument; Labview; Charged barbed wire net electricity parameter; The signal adjusts the reason