本文選題：礦井提升機(jī)　切入點(diǎn)：無源濾波　出處：《安徽理工大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：礦井提升機(jī)是煤礦企業(yè)中大型的生產(chǎn)型設(shè)備,其安全可靠地工作關(guān)系到人員的安全和企業(yè)的經(jīng)濟(jì)利益。隨著交流調(diào)速技術(shù)的成熟,礦井提升機(jī)均采用交流調(diào)速系統(tǒng)。但是礦井提升機(jī)交流調(diào)速系統(tǒng)的應(yīng)用給電網(wǎng)帶來了附加的諧波污染問題。煤礦企業(yè)針對諧波污染問題采取了相應(yīng)的措施,可是依然不能很好地抑制諧波向電網(wǎng)及其周邊區(qū)域擴(kuò)散。本文以礦井提升機(jī)交流調(diào)速為研究對象,以煤礦供電網(wǎng)絡(luò)結(jié)構(gòu)為基礎(chǔ)展開了諧波抑制策略的研究。 本文首先在諧波方面對比分析交直交變頻調(diào)速和交交變頻調(diào)速的優(yōu)缺點(diǎn),然后依據(jù)礦井提升機(jī)的工作特點(diǎn),由仿真實(shí)驗(yàn)得到一個(gè)結(jié)論是：礦井提升機(jī)在運(yùn)行過程中,變頻和負(fù)載的變化都會(huì)引起電機(jī)端電壓的畸變,從而影響電網(wǎng)電能質(zhì)量。針對礦井提升機(jī)交流調(diào)速系統(tǒng)運(yùn)行過程中產(chǎn)生諧波的原理,本文開始研究該系統(tǒng)的諧波抑制策略。諧波抑制方面主要采用有源濾波方式和無源濾波方式。而無源濾波又主要包括無源濾波器、靜止無功補(bǔ)償裝置、靜止無功發(fā)生器這三種。通過對比分析這三種無源濾波方式,可知靜止無功發(fā)生器的性能是最優(yōu)越的,但是成本高是其最大的缺點(diǎn)。在補(bǔ)償原理上,靜止無功發(fā)生器與有源濾波器很相似,而有源濾波器具有靜止無功發(fā)生器的優(yōu)點(diǎn)的同時(shí)成本相對來講比較低。所以本文采用無源濾波器與有源濾波器相結(jié)合的方式來抑制礦井提升機(jī)交流調(diào)速系統(tǒng)的諧波。兩者結(jié)合的情況下,有源濾波器可以彌補(bǔ)無源濾波器動(dòng)態(tài)性能方面的不足,而無源濾波器可以彌補(bǔ)有源濾波器容量小的缺點(diǎn)。要使有源濾波器有好的動(dòng)態(tài)補(bǔ)償性能,就需要穩(wěn)定有源濾波器直流側(cè)電壓,于是本文采用電壓差平方參數(shù)離散化的PI自調(diào)節(jié)控制方式來控制直流側(cè)電壓的穩(wěn)定。除此之外,無源濾波器容易受到電網(wǎng)阻抗變化的影響,有可能會(huì)導(dǎo)致電網(wǎng)的共振現(xiàn)象,文中采用有源阻尼來阻尼諧振現(xiàn)象。有源阻尼策略主要是通過改變輸出的補(bǔ)償電流,間接的改變?yōu)V波器所呈現(xiàn)出來的阻抗。有源濾波器抑制諧波危害和網(wǎng)絡(luò)共振,主要依據(jù)模態(tài)分析和靈敏度矩陣評估策略計(jì)算參與因子兩種方法。 基于以上原理,在MATLAB/SIMULINK軟件中搭建礦井提升機(jī)交流調(diào)速系統(tǒng)、有源濾波器、煤礦供電網(wǎng)絡(luò)的仿真模型來驗(yàn)證所提出策略的有效性。最后設(shè)計(jì)了有源濾波器的軟硬件部分。仿真和實(shí)驗(yàn)結(jié)果表明,混合型有源濾波器結(jié)合模態(tài)分析和靈敏度矩陣評估策略計(jì)算參與因子的方法,能夠滿足抑制礦井提升機(jī)交流調(diào)速系統(tǒng)諧波的要求。
[Abstract]:Mine hoist is a large production equipment in coal mine enterprise. Its safe and reliable work is related to the safety of personnel and the economic benefit of enterprise. With the development of AC speed regulation technology, The mine hoist adopts AC speed regulation system, but the application of AC speed regulation system of mine hoist brings additional harmonic pollution problem to the power network. Coal mine enterprises take corresponding measures to solve the problem of harmonic pollution. However, the harmonic diffusion to the power grid and its surrounding areas can not be restrained very well. This paper takes AC speed regulation of mine hoist as the research object, and carries out the research of harmonic suppression strategy based on the network structure of coal mine power supply. In this paper, the advantages and disadvantages of AC / DC variable frequency speed regulation and AC / AC frequency conversion speed regulation are compared and analyzed in the aspect of harmonics. Then, according to the working characteristics of mine hoist, a conclusion is drawn from the simulation experiment: the mine hoist is in operation. The variation of frequency conversion and load will cause the distortion of the motor terminal voltage, which will affect the power quality of the power grid. In view of the principle of harmonic generation during the operation of the AC speed regulating system of mine hoist, In this paper, the harmonic suppression strategy of the system is studied. Active filter and passive filter are mainly used in harmonic suppression, and passive filter mainly includes passive filter, static var compensation device. By comparing and analyzing the three passive filtering methods, we can see that the performance of the static Var Generator is the best, but its biggest disadvantage is the high cost. Static Var generators are very similar to active filters. The active power filter has the advantage of static Var generator and the cost is relatively low, so this paper uses the combination of passive filter and active filter to suppress the harmonics of AC speed regulation system of mine hoist. Wave. In the case of a combination of the two, Active filter can make up for the deficiency of passive filter in dynamic performance, and passive filter can make up for the shortcoming of small capacity of active filter. It is necessary to stabilize the DC side voltage of the active power filter, so the Pi self-regulation control method with discrete voltage difference square parameters is used to control the voltage stability of the DC side. In addition, the passive filter is easily affected by the variation of the impedance of the power network. In this paper, the active damping is used to damp the resonance phenomenon. The active damping strategy is mainly by changing the output compensation current. The active filter can suppress harmonic hazard and network resonance, and calculate the participation factor based on modal analysis and sensitivity matrix evaluation strategy. Based on the above principle, the AC speed regulation system and active filter of mine hoist are built in MATLAB/SIMULINK software. The simulation model of the coal mine power supply network is used to verify the effectiveness of the proposed strategy. Finally, the hardware and software part of the active power filter is designed. The simulation and experimental results show that, Combined with modal analysis and sensitivity matrix evaluation, the hybrid active power filter can be used to calculate the participation factor, which can meet the requirements of suppressing the harmonics of the AC speed regulating system of mine hoist.
【學(xué)位授予單位】：安徽理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TD633

【參考文獻(xiàn)】

相關(guān)期刊論文 前10條

1 王立峰;鄭建勇;梅軍;王培軍;;有源濾波裝置直流側(cè)電壓控制瞬時(shí)能量平衡建模[J];電工技術(shù)學(xué)報(bào);2012年02期

2 孟忠良;陳美麗;;礦井提升機(jī)的動(dòng)態(tài)響應(yīng)及結(jié)構(gòu)優(yōu)化分析[J];湖南文理學(xué)院學(xué)報(bào)(自然科學(xué)版);2013年04期

3 宋江保;吳耀輝;魏圣鋼;吳欣;;TCT型SVC在礦用提升機(jī)動(dòng)態(tài)無功補(bǔ)償中的應(yīng)用[J];電力電容器與無功補(bǔ)償;2014年04期

4 林煜清;公茂法;葛卉婷;邵群;楊廷偉;;基于TCR+TSF的混合無功補(bǔ)償方案的研究[J];電子質(zhì)量;2014年06期

5 徐群偉;鐘曉劍;胡健;陳國柱;;基于誤差迭代PI和改進(jìn)重復(fù)控制的APF補(bǔ)償電流控制[J];電力系統(tǒng)自動(dòng)化;2015年03期

6 聶海龍;徐定成;;LCL濾波的單相三電平PWM整流器比例諧振控制[J];電器與能效管理技術(shù);2015年01期

7 楊玉潔;徐開軍;;低壓無功補(bǔ)償裝置改造中APF的應(yīng)用[J];電氣傳動(dòng)自動(dòng)化;2015年01期

8 顧舒陽;;諧波共振對電力系統(tǒng)的影響及其解決辦法淺析[J];機(jī)電設(shè)備;2011年04期

9 郭珂;曾意;劉強(qiáng);楊藝云;司傳濤;;LCL濾波器在具有有源濾波功能的光伏并網(wǎng)系統(tǒng)中的應(yīng)用[J];電力系統(tǒng)保護(hù)與控制;2013年03期

10 劉暉;唐朝暉;楊賽強(qiáng);肖津;桂衛(wèi)華;;基于模糊-PI控制的無功補(bǔ)償技術(shù)在礦井提升系統(tǒng)中的應(yīng)用[J];江南大學(xué)學(xué)報(bào)(自然科學(xué)版);2013年05期

相關(guān)博士學(xué)位論文 前1條

1 李明;電力系統(tǒng)間諧波檢測算法及電動(dòng)機(jī)間諧波源研究[D];西南交通大學(xué);2012年

，

本文編號(hào)：1566912