【摘要】：非線性負(fù)荷在各級電網(wǎng)中的大量應(yīng)用，產(chǎn)生了功率因數(shù)降低和諧波污染等一系列問題，造成了生產(chǎn)設(shè)備使用率降低、線路系統(tǒng)電壓差值過大以及產(chǎn)生電能的巨大浪費(fèi)等后果，對配電系統(tǒng)進(jìn)行無功功率補(bǔ)償和諧波治理已成為配電網(wǎng)急需解決的問題。 本文以電網(wǎng)無功補(bǔ)償與諧波治理為分析對象，所做的主要工作和取得的主要成果如下： （1）對系統(tǒng)功率因數(shù)降低以及諧波污染等問題的產(chǎn)生原因、危害以及治理原理等進(jìn)行了分析和探討,為后續(xù)的電網(wǎng)無功補(bǔ)償和諧波治理研究提供了理論支持； （2）分析并提出了幾種電網(wǎng)無功補(bǔ)償和諧波治理方案，從諧波電流的計(jì)算、諧波電流導(dǎo)致的功率損耗的計(jì)算等方面對諧波管理進(jìn)行了分析，通過在電網(wǎng)中合理選用動(dòng)態(tài)消諧無功補(bǔ)償裝置和有源濾波器的方法來實(shí)現(xiàn)改善電網(wǎng)電能質(zhì)量的目的； （3）對海陽地區(qū)電網(wǎng)電能質(zhì)量情況進(jìn)行了調(diào)查研究,將無功補(bǔ)償與諧波治理的基本理論與工程實(shí)踐相結(jié)合,較為詳盡地剖析了區(qū)域電網(wǎng)的電能質(zhì)量情況，，并通過對某公司配電室投放無功補(bǔ)償和諧波治理裝置前后的數(shù)據(jù)分析比較,驗(yàn)證了該補(bǔ)償方案對諧波的抑制效果。本文設(shè)計(jì)的濾波方案已成功投運(yùn)到該公司配電室，并達(dá)到了預(yù)期效果，證明該方案具有良好的經(jīng)濟(jì)性和可行性。
[Abstract]:A large number of applications of nonlinear loads in power grids at all levels have resulted in a series of problems, such as power factor reduction and harmonic pollution, resulting in the reduction of the utilization rate of production equipment, the excessive voltage difference of the line system and the huge waste of electric energy. Reactive power compensation and harmonic control of distribution system have become an urgent problem to be solved in distribution network. In this paper, reactive power compensation and harmonic control are taken as the analysis object. The main work done and the main achievements are as follows: (1) the causes of the system power factor reduction and harmonic pollution. The harm and treatment principle are analyzed and discussed, which provides theoretical support for the follow-up research of reactive power compensation and harmonic control in power grid. (2) several schemes of reactive power compensation and harmonic control in power grid are analyzed and put forward, and the harmonic management is analyzed from the aspects of harmonic current calculation and power loss calculation caused by harmonic current. Through the reasonable selection of dynamic harmonic elimination reactive power compensation device and active power filter in the power grid to achieve the purpose of improving the power quality of the power grid; (3) the power quality of power grid in Haiyang area is investigated and studied, and the power quality of regional power grid is analyzed in detail by combining the basic theory of reactive power compensation with harmonic control with engineering practice. Through the analysis and comparison of the data before and after putting reactive power compensation and harmonic control device into the distribution room of a company, the suppression effect of the compensation scheme on harmonics is verified. The filtering scheme designed in this paper has been successfully put into operation in the distribution room of the company, and the expected results have been achieved, which proves that the scheme has good economy and feasibility.
【學(xué)位授予單位】：華北電力大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：TM761.12

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