220kV節(jié)能變壓器研究
發(fā)布時(shí)間：2018-11-27 13:45
【摘要】：隨著我國社會經(jīng)濟(jì)的發(fā)展,電力的需求不斷增加,變壓器作為電力系統(tǒng)的主要設(shè)備,降低損耗,提高運(yùn)行的經(jīng)濟(jì)型、可靠性和安全性變得尤為重要。本文從變壓器的基本原理出發(fā),分析了變壓器損耗產(chǎn)生的原因,研究了降低變壓器空載損耗和負(fù)載損耗的具體措施,探討了不同工藝對變壓器損耗的影響,在此基礎(chǔ)上設(shè)計(jì)了 SSZ-240000/220節(jié)能型電力變壓器,仿真分析變壓器的基本性能,并通過樣機(jī)試驗(yàn)驗(yàn)證了節(jié)能變壓器的安全性經(jīng)濟(jì)性及節(jié)能措施的有效性。本文首先從空載損耗和負(fù)載損耗對變壓器的損耗進(jìn)行了理論計(jì)算。分析了變壓器的空載損耗,磁滯損耗,渦流損耗,鐵心附加損耗產(chǎn)生的原因,并給出了計(jì)算的經(jīng)驗(yàn)公式;對于變壓器的負(fù)載損耗,按電阻損耗,渦流損耗,環(huán)流損耗和結(jié)構(gòu)件雜散損耗四部分,分別進(jìn)行了分析計(jì)算,根據(jù)分析計(jì)算的結(jié)果,給出了理論上減少變壓器損耗的措施。進(jìn)而,在理論計(jì)算的基礎(chǔ)上,分析了降低變壓器空載和負(fù)載損耗的具體措施。在變壓器結(jié)構(gòu)方面研究了卷鐵心三相四框五柱鐵心結(jié)構(gòu)在降低損耗上的優(yōu)勢,并給出了變壓器鐵心主軛與旁軛截面積優(yōu)化的思路。為了減少鐵心損耗,本文通過多種硅鋼片的比對試驗(yàn),研究了優(yōu)質(zhì)高導(dǎo)磁取向硅鋼片和非晶合金材料的優(yōu)缺點(diǎn)。對于變壓器的工藝技術(shù),主要比較了直接接縫與斜接縫,階梯疊與交錯疊四種加工工藝并通過仿真分析比較了他們的差異。對于變壓器的銅耗,研究了改進(jìn)導(dǎo)線材料和進(jìn)行合理換相兩種方式,給出了最佳換相策略。為了驗(yàn)證理論分析的正確性,設(shè)計(jì)了 SSZ-240000/220節(jié)能型電力變壓器樣機(jī)。通過仿真變壓器的主絕緣磁場、漏磁場、承受短路的能力和繞組溫度場,結(jié)果顯示節(jié)能變壓器的主磁場和漏磁場分布優(yōu)于傳統(tǒng)變壓器,繞組溫升小于傳統(tǒng)變壓器,說明變壓器的銅耗、鐵耗都有所降低,驗(yàn)證了變壓器的安全性和經(jīng)濟(jì)性以及節(jié)能措施的有效性。為了驗(yàn)證變壓器基本性能,設(shè)計(jì)了電壓比測量及聯(lián)結(jié)組標(biāo)號檢定、外施耐壓試驗(yàn)、操作波沖擊試驗(yàn)、雷電沖擊試驗(yàn)、長時(shí)感應(yīng)電壓試驗(yàn)、聲級測量試驗(yàn)、繞組電阻測量試驗(yàn),繞組對地絕緣電阻和介質(zhì)損耗因數(shù)的測量試驗(yàn)等,空載電流和空載損耗測量試驗(yàn)、短路阻抗和負(fù)載損耗測量試驗(yàn),測量變壓器的空載損耗和負(fù)載損耗以及變壓器的主要技術(shù)參數(shù),結(jié)果顯示變壓器基本性能滿足設(shè)計(jì)要求,空載損耗和負(fù)載損耗較傳統(tǒng)變壓器明顯降低,達(dá)到了安全、可靠、經(jīng)濟(jì)的目標(biāo),為節(jié)能變壓器進(jìn)一步的深入研究提供了參考。
[Abstract]:With the development of society and economy in our country, the demand of electric power is increasing. As the main equipment of power system, it is very important for transformer to reduce the loss, improve the economical type, reliability and safety. Based on the basic principle of transformer, this paper analyzes the causes of transformer loss, studies the concrete measures to reduce the no-load loss and load loss of transformer, and discusses the influence of different processes on transformer loss. On this basis, the SSZ-240000/220 energy-saving power transformer is designed, the basic performance of the transformer is simulated and analyzed, and the safety and economy of the energy-saving transformer and the effectiveness of the energy-saving measures are verified by the prototype test. In this paper, the loss of transformer is calculated theoretically from load loss and no load loss. The causes of no-load loss, hysteresis loss, eddy current loss and core additional loss of transformers are analyzed, and the empirical formulas for calculation are given. The load loss of transformer is analyzed and calculated according to four parts: resistance loss, eddy current loss, circulation loss and stray loss of structural parts. According to the results of analysis and calculation, the measures to reduce transformer losses are given in theory. Then, on the basis of theoretical calculation, the concrete measures to reduce the no-load and load loss of transformer are analyzed. In the aspect of transformer structure, the advantages of three-phase four-frame five-column core structure in reducing loss are studied, and the idea of optimizing the cross-sectional area of transformer core yoke and side yoke is given. In order to reduce core loss, the merits and demerits of high quality and high magnetic conductivity oriented silicon steel and amorphous alloy were studied by comparison tests of various silicon steel sheets. For the transformer technology, the paper mainly compares the four processing technologies of direct joint and oblique joint, step stacking and staggered stack, and compares their differences through simulation analysis. For the copper consumption of transformer, two ways of improving conductor material and carrying out reasonable phase commutation are studied, and the optimal commutation strategy is given. In order to verify the correctness of the theoretical analysis, the prototype of SSZ-240000/220 power transformer is designed. By simulating the main insulation magnetic field, leakage magnetic field, the ability to bear short circuit and the winding temperature field, the results show that the distribution of main magnetic field and leakage magnetic field of energy-saving transformer is better than that of traditional transformer, and the temperature rise of winding is smaller than that of traditional transformer. The results show that the copper and iron consumption of transformers are reduced, and the safety and economy of transformers and the effectiveness of energy saving measures are verified. In order to verify the basic performance of the transformer, the measurement of the voltage ratio and the calibration of the connection group, the external voltage test, the operating wave impact test, the lightning shock test, the long time induction voltage test, the sound level measurement test, the winding resistance measurement test are designed. Measurement test of insulation resistance and dielectric loss factor of winding, measurement test of no-load current and no-load loss, measurement test of short-circuit impedance and load loss, The measurement of the no-load loss and load loss of transformer and the main technical parameters of transformer show that the basic performance of transformer meets the design requirements, the no-load loss and load loss are obviously lower than those of traditional transformer, and the transformer is safe and reliable. The economic goal provides a reference for the further study of energy-saving transformer.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM41
本文編號：2360987
[Abstract]:With the development of society and economy in our country, the demand of electric power is increasing. As the main equipment of power system, it is very important for transformer to reduce the loss, improve the economical type, reliability and safety. Based on the basic principle of transformer, this paper analyzes the causes of transformer loss, studies the concrete measures to reduce the no-load loss and load loss of transformer, and discusses the influence of different processes on transformer loss. On this basis, the SSZ-240000/220 energy-saving power transformer is designed, the basic performance of the transformer is simulated and analyzed, and the safety and economy of the energy-saving transformer and the effectiveness of the energy-saving measures are verified by the prototype test. In this paper, the loss of transformer is calculated theoretically from load loss and no load loss. The causes of no-load loss, hysteresis loss, eddy current loss and core additional loss of transformers are analyzed, and the empirical formulas for calculation are given. The load loss of transformer is analyzed and calculated according to four parts: resistance loss, eddy current loss, circulation loss and stray loss of structural parts. According to the results of analysis and calculation, the measures to reduce transformer losses are given in theory. Then, on the basis of theoretical calculation, the concrete measures to reduce the no-load and load loss of transformer are analyzed. In the aspect of transformer structure, the advantages of three-phase four-frame five-column core structure in reducing loss are studied, and the idea of optimizing the cross-sectional area of transformer core yoke and side yoke is given. In order to reduce core loss, the merits and demerits of high quality and high magnetic conductivity oriented silicon steel and amorphous alloy were studied by comparison tests of various silicon steel sheets. For the transformer technology, the paper mainly compares the four processing technologies of direct joint and oblique joint, step stacking and staggered stack, and compares their differences through simulation analysis. For the copper consumption of transformer, two ways of improving conductor material and carrying out reasonable phase commutation are studied, and the optimal commutation strategy is given. In order to verify the correctness of the theoretical analysis, the prototype of SSZ-240000/220 power transformer is designed. By simulating the main insulation magnetic field, leakage magnetic field, the ability to bear short circuit and the winding temperature field, the results show that the distribution of main magnetic field and leakage magnetic field of energy-saving transformer is better than that of traditional transformer, and the temperature rise of winding is smaller than that of traditional transformer. The results show that the copper and iron consumption of transformers are reduced, and the safety and economy of transformers and the effectiveness of energy saving measures are verified. In order to verify the basic performance of the transformer, the measurement of the voltage ratio and the calibration of the connection group, the external voltage test, the operating wave impact test, the lightning shock test, the long time induction voltage test, the sound level measurement test, the winding resistance measurement test are designed. Measurement test of insulation resistance and dielectric loss factor of winding, measurement test of no-load current and no-load loss, measurement test of short-circuit impedance and load loss, The measurement of the no-load loss and load loss of transformer and the main technical parameters of transformer show that the basic performance of transformer meets the design requirements, the no-load loss and load loss are obviously lower than those of traditional transformer, and the transformer is safe and reliable. The economic goal provides a reference for the further study of energy-saving transformer.
【學(xué)位授予單位】：山東大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM41
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 佘立偉;王林青;鄧杰文;;基于有限元法的三相五柱變壓器直流偏磁研究[J];科技與創(chuàng)新;2016年06期
2 陳爾奎;吳林;陳煊之;孫建華;;立體卷鐵心變壓器鐵心參數(shù)計(jì)算[J];變壓器;2016年03期
3 張宗有;何曉峰;趙永霞;;鐵心電抗器繞組渦流損耗的計(jì)算[J];電力電容器與無功補(bǔ)償;2015年06期
4 蔣發(fā)倫;;節(jié)能變壓器用非晶合金的改性研究[J];熱加工工藝;2014年22期
5 龔宇;崔巍;章躍進(jìn);;考慮局部磁滯損耗的復(fù)合電機(jī)鐵損耗計(jì)算[J];中國電機(jī)工程學(xué)報(bào);2014年30期
6 陳爾奎;姜文建;李錦川;;立體卷鐵心變壓器鐵心尺寸與損耗計(jì)算[J];變壓器;2013年11期
7 程鵬;楊永明;莊曉蕓;楊帆;李春莉;何為;;立體卷鐵心干式變壓器三維溫度場計(jì)算與分析[J];變壓器;2013年09期
8 董霞;劉志珍;;三相變壓器直流偏磁仿真分析[J];電力自動化設(shè)備;2013年07期
9 鄭黎明;尹華杰;;立體卷鐵心變壓器鐵心柱截面的優(yōu)化設(shè)計(jì)[J];變壓器;2013年02期
10 侯忠平;陳開全;胡晶金;;非晶合金變壓器與硅鋼片鐵心變壓器運(yùn)行參數(shù)比較[J];機(jī)電工程技術(shù);2012年02期
相關(guān)博士學(xué)位論文 前1條
1 陳敏;高溫超導(dǎo)變壓器中電磁問題的研究[D];中國科學(xué)院研究生院（電工研究所）;2004年
相關(guān)碩士學(xué)位論文 前3條
1 高凌祥;變壓器直流偏磁仿真分析及其抑制[D];西南交通大學(xué);2016年
2 張師赫;變壓器直流偏磁現(xiàn)象研究[D];西安科技大學(xué);2015年
3 萬宗順;新型節(jié)能配電變壓器卷鐵芯制造關(guān)鍵技術(shù)研究[D];東華大學(xué);2006年
，本文編號：2360987
本文鏈接：http://sikaile.net/kejilunwen/dianlidianqilunwen/2360987.html
最近更新
教材專著
