本文選題：潛油電機(jī) + LabVIEW��； 參考：《東北石油大學(xué)》2015年碩士論文

【摘要】：潛油電機(jī)是油田企業(yè)中經(jīng)常運(yùn)用的特種采油作業(yè)設(shè)備,其應(yīng)用廣泛,是油田企業(yè)的重要用電設(shè)備。潛油電機(jī)在其運(yùn)行中會(huì)消耗大量無(wú)功功率,會(huì)嚴(yán)重影響電能的質(zhì)量,對(duì)電網(wǎng)的質(zhì)量、設(shè)備安全、經(jīng)濟(jì)用效益方面也會(huì)產(chǎn)生諸多不利影響。近年來(lái)虛擬儀器技術(shù)在工程測(cè)試中發(fā)展迅速,運(yùn)用虛擬儀器技術(shù),對(duì)潛油電機(jī)自動(dòng)無(wú)功補(bǔ)償進(jìn)行控制有著良好的實(shí)用性。傳統(tǒng)的無(wú)功補(bǔ)償器不能動(dòng)態(tài)快速地滿足變動(dòng)負(fù)荷無(wú)功補(bǔ)償要求,靜止無(wú)功發(fā)生器(SVG)作為一種新型無(wú)功補(bǔ)償裝置,在對(duì)變動(dòng)負(fù)荷無(wú)功的補(bǔ)償方面具有優(yōu)越性。因此本文在學(xué)者研究的基礎(chǔ)上開(kāi)發(fā)優(yōu)化適合補(bǔ)償潛油電機(jī)的無(wú)功補(bǔ)償控制系統(tǒng),本文研究的潛油電機(jī)自動(dòng)無(wú)功補(bǔ)償系統(tǒng)對(duì)油田企業(yè)用電效率的提高和能源節(jié)約有著深遠(yuǎn)影響。本文首先對(duì)無(wú)功補(bǔ)償裝置的發(fā)展情況進(jìn)行綜述,結(jié)合潛油電機(jī)的基本結(jié)構(gòu)和運(yùn)行特點(diǎn)分析研究了無(wú)功發(fā)生器的原理。在掌握基于d-q坐標(biāo)變換的瞬時(shí)無(wú)功電流檢測(cè)方法的基礎(chǔ)上,研究了鎖相環(huán)替換的瞬時(shí)無(wú)功電流提取新方法。該檢測(cè)原理結(jié)構(gòu)與傳統(tǒng)三相電壓不對(duì)稱系統(tǒng)中無(wú)功電流檢測(cè)方法相比,其檢測(cè)原理結(jié)構(gòu)簡(jiǎn)單、運(yùn)算量相對(duì)較小、具有一定靈活性、運(yùn)算過(guò)程中可減少誤差并能直接運(yùn)用在三相電壓對(duì)稱或不對(duì)稱系統(tǒng)中。其次,在分析了無(wú)功發(fā)生器的控制策略基礎(chǔ)上,文章針對(duì)不對(duì)稱系統(tǒng)提出新的電流直接控制方法,即基于d-q坐標(biāo)變換的正序、負(fù)序基波無(wú)功電流同步補(bǔ)償?shù)碾娏髦苯涌刂品椒�。正序控制器完成正序無(wú)功分量補(bǔ)償,負(fù)序控制器完成負(fù)序無(wú)功分量補(bǔ)償,兩個(gè)控制器同時(shí)工作。最后,本文設(shè)計(jì)了基于LabVIEW的潛油電機(jī)自動(dòng)無(wú)功補(bǔ)償控制系統(tǒng)的硬件電路和LabVIEW軟件程序開(kāi)發(fā),該系統(tǒng)能夠?qū)崿F(xiàn)潛油電機(jī)軟啟動(dòng)、電機(jī)相關(guān)運(yùn)行參數(shù)的采集和顯示、SVG自動(dòng)無(wú)功補(bǔ)償控制算法的開(kāi)發(fā)、歷史數(shù)據(jù)查詢與存儲(chǔ)、報(bào)表生成以及故障提示。從實(shí)驗(yàn)結(jié)果可得出以下結(jié)論,所設(shè)計(jì)的潛油電機(jī)自動(dòng)無(wú)功補(bǔ)償控制系統(tǒng)能夠動(dòng)態(tài)進(jìn)行無(wú)功功率補(bǔ)償并對(duì)系統(tǒng)電流的不平衡起到有效抑制作用,這證明了優(yōu)化改進(jìn)的控制算法的可靠性與系統(tǒng)運(yùn)行的合理性,因此本文所設(shè)計(jì)的潛油電機(jī)自動(dòng)無(wú)功補(bǔ)償控制系統(tǒng)具有良好的理論與實(shí)際應(yīng)用價(jià)值。
[Abstract]:Submersible motor is a kind of special oil production equipment which is often used in oil field enterprises. It is widely used and is an important electric equipment in oil field enterprises. The submersible motor will consume a large amount of reactive power in its operation, which will seriously affect the quality of electrical energy, the quality of the power grid, equipment safety, economic benefits will also have a lot of adverse effects. In recent years, virtual instrument technology has developed rapidly in engineering testing, and it has good practicability to control submersible motor automatic reactive power compensation by using virtual instrument technology. The traditional reactive power compensator can not meet the demand of variable load reactive power compensation dynamically and quickly. As a new type of reactive power compensation device, static Var Generator (SVG) has advantages in the compensation of variable load reactive power. Therefore, based on the research of scholars, this paper develops and optimizes the reactive power compensation control system for submersible motor. The automatic reactive power compensation system of submersible motor studied in this paper has a profound impact on the improvement of power efficiency and energy saving in oil field enterprises. In this paper, the development of reactive power compensator is reviewed firstly, and the principle of reactive power generator is analyzed and studied according to the basic structure and operation characteristics of submersible motor. On the basis of mastering the instantaneous reactive current detection method based on d-q coordinate transformation, a new method of instantaneous reactive current extraction by phase-locked loop replacement is studied. Compared with the traditional reactive current detection method in the three-phase voltage asymmetry system, the structure of the detection principle is simple, the calculation is relatively small, and the detection principle is flexible. It can reduce the error and can be directly used in the three-phase voltage symmetric or asymmetric system. Secondly, on the basis of analyzing the control strategy of the reactive power generator, this paper proposes a new direct current control method for the asymmetric system, that is, the direct current control method based on the positive sequence and negative sequence fundamental wave reactive current synchronous compensation based on d-q coordinate transformation. The positive sequence controller compensates the positive sequence reactive power component and the negative sequence controller completes the negative sequence reactive power component compensation. The two controllers work at the same time. Finally, the hardware circuit and LabVIEW software program of the submersible motor automatic reactive power compensation control system based on LabVIEW are designed. The system can realize the soft start of the submersible motor. The development of SVG automatic reactive power compensation control algorithm, historical data query and storage, report generation and fault prompt. From the experimental results, the following conclusions can be drawn: the designed automatic reactive power compensation control system of submersible motor can dynamically compensate reactive power and effectively restrain the imbalance of system current. This proves the reliability of the optimized and improved control algorithm and the rationality of the system operation. Therefore, the automatic reactive power compensation control system for submersible motor designed in this paper has good theoretical and practical application value.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TE938

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本文編號(hào)：2047479