基于虛擬儀器的電網主要電氣參數測試設計

電子機電論文編號:JD150     字數:31929,頁數:61 有開題報告，任務書，文獻綜述

目    錄
第1章  緒論................................................................. 1
1.1 電網電氣參數測量簡介.................................................... 3
1.1.1 電網電氣參數測量方法...................................................3
1.1.2 電網電氣參數測量發展前景...............................................4
1.2 電網主要電氣參數測量方案的確定 ..........................................7
第2章  虛擬儀器技術......................................................... 9
2.1 虛擬儀器技術的概念.....................................................  9
2.2 虛擬儀器的發展.................................................... .... 10
2.2.1 虛擬儀器的發展史....................................................  10
2.2.2 虛擬儀器的現狀.................................................... .. 12
2.3 虛擬儀器的軟硬件構成................................................... 14
2.3.1 虛擬儀器的硬件構成 ...................................................14
2.3.2 虛擬儀器的軟件構成 ...................................................16
第3章  電網主要電氣參數的測量算法及.........................................19
3.1 電壓、電流的測量 ...................................................... 19
3.1.1 有效值的測量.................................................... .... 19
3.1.2 峰值的測量 .......................................................... 20
3.2 相位差的測量 .................................................... ......21
3.3 功率的測量 ............................................................ 22
3.3.1 有功功率和視在功率的測量 .............................................22
3.3.2 無功功率的測量 ...................................................... 23
第4章  軟件設計 ........................................................... 25
4.1 概述 .................................................................. 25
4.2 主面板的設計..........................................................  26
4.3 電壓、電流的測定.................................................... .. 27
4.3.1 算法的確定 .......................................................... 27
4.3.2 前面板的設計 ........................................................ 28
4.3.3 后面板的設計........................................................  29
4.4 相位差的測定.................................................... ...... 30
4.4.1 算法的確定與程序框圖..................................................30
4.4.2 前面板的設計........................................................  33
4.4.3 后面板的設計 ........................................................ 34
4.5 功率的測定.................................................... ........ 35
4.5.1 算法及其程序框圖....................................................  35
4.5.2 前面板的設計 ........................................................ 36
4.5.3 后面板的設計....................................................  ....37
4.6 PCI2006數據采集模塊的設計 ............................................. 38
4.6.1 前面板的設計........................................................  38
4.6.2 后面板的設計 ........................................................ 38
第5章  硬件設計.............................................................40
5.1 傳感器的研究 .................................................... ......40
5.1.1 常見傳感器的原理及其發展方向......................................... 40
5.1.2 傳感器在本課題中的應用 ...............................................42
5.2 低通濾波器的原理 ...................................................... 45
5.3 數據采集卡的研究......................................................  45
5.3.1 數據采集方法.................................................... .... 45
5.3.2 pci2006數據采集卡.................................................... 46
結  論....................................................  ................51
參考文獻 .................................................................. 52
致  謝 .................................................................... 53

摘要：本系統主要是利用NI公司的虛擬儀器軟件Labview來實現參數測量的，是虛擬儀器測試技術的一種。此系統具有測量精度高、便攜、升級簡單、適應面廣等優點。
電網電氣參數測試系統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。這一部分的設計主要是利用NI公司的Labview軟件完成設計，在其中完成系統的計算、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、濾波電路、PCI數據采集卡組成。電網信號經傳感器、信號調理電路，最后經由PCI卡進行數據采集和A/D轉換，轉換成數字量輸入計算機經虛擬儀器Labview軟件模塊處理后便可得所測參數。
關鍵詞：虛擬儀器；Labview；電網電氣參數；信號調理；數據采集

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 constituted 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 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 after spread the feeling machine, signal to adjust to manage the electric circuit, carry on data's collect to convert with A/D through the PCI card finally, convert to become the numerical quantity importation calculator through the virtual instrument Labview software mold piece processing can get the parameter measure then.
Keywords: Virtual instrument; Labview; Charged barbed wire net electricity parameter; the signal adjusts the reason；Data collection