本文選題：礦熱爐 + 無功補(bǔ)償��； 參考：《長沙理工大學(xué)》2014年碩士論文

【摘要】：工業(yè)礦熱爐是典型的高耗能非線性用戶,其在工作過程不僅需要吸收大量的無功功率,還且會(huì)產(chǎn)生嚴(yán)重的諧波、電壓波動(dòng)和三相不平衡等多種電能質(zhì)量擾動(dòng)污染。隨著節(jié)能減排和電能質(zhì)量日益受到重視,礦熱爐用戶和供電部門越來越關(guān)注高性價(jià)比的無功補(bǔ)償裝置的開發(fā)和使用�；旌贤肚须娙菪挽o止無功補(bǔ)償系統(tǒng),充分發(fā)揮了電容器無功補(bǔ)償?shù)慕?jīng)濟(jì)優(yōu)勢、固態(tài)開關(guān)投切的動(dòng)態(tài)特性優(yōu)勢和機(jī)械開關(guān)投切的低損耗優(yōu)勢,是一種高效能礦熱爐無功補(bǔ)償裝置,近年來成為礦熱爐無功補(bǔ)償?shù)难芯繜狳c(diǎn)。本文針對(duì)礦熱爐無功補(bǔ)償?shù)牡V熱爐混合投切電容型靜止無功補(bǔ)償系統(tǒng)所涉及的理論和技術(shù)問題開展研究,具有重要的理論意義和實(shí)際應(yīng)用價(jià)值。本文首先闡述了礦熱爐工作原理特性及無功補(bǔ)償技術(shù)的發(fā)展現(xiàn)狀和趨勢,分析了礦熱爐供電系統(tǒng)的物理結(jié)構(gòu)和電氣特性,建立起了礦熱爐供電系統(tǒng)各組成部分的電氣模型。然后,研究了無功補(bǔ)償總?cè)萘坑?jì)算的功率因數(shù)法、無功電壓法、改進(jìn)匹配注入流算法和經(jīng)濟(jì)優(yōu)化法,探索了MSC、RSC、TSC的容量優(yōu)化分配方法。在控制方法上,采用改進(jìn)型九區(qū)圖控制,使得電容器投切與礦熱爐變壓器之間的調(diào)節(jié)更為合理。接著探討了機(jī)械投切電容器(MSC)、復(fù)合投切電容器(RSC)與晶閘管投切電容器(TSC)組成的混合投切電容型靜止無功補(bǔ)償系統(tǒng)的主電路物理結(jié)構(gòu)和工作原理,研究了基于瞬時(shí)無功功率理論的ip-iq信號(hào)檢測方法。最后,運(yùn)用MATLAB仿真軟件進(jìn)行了混合投切電容型靜止無功補(bǔ)償系統(tǒng)工作原理仿真、信號(hào)檢測和控制策略仿真,并進(jìn)行了低壓混合投切電容型靜止無功補(bǔ)償系統(tǒng)的主電路設(shè)計(jì)和控制器設(shè)計(jì),在主電路設(shè)計(jì)方面,詳細(xì)分析了電容器、機(jī)械開關(guān)、固態(tài)開關(guān)、電抗器的選型和參數(shù)匹配的基本規(guī)律,在控制器設(shè)計(jì)方面,深入研究了基于STM32F407VGT6芯片的控制器硬件電路設(shè)計(jì)和軟件開發(fā)。本文所設(shè)計(jì)的低壓混合投切電容型靜止無功補(bǔ)償系統(tǒng)在云南某冶煉廠的礦熱爐無功補(bǔ)償中得到了成功應(yīng)用。理論研究、仿真結(jié)果和混合投切電容型靜止無功補(bǔ)償系統(tǒng)的實(shí)際應(yīng)用表明本論文研究的混合投切電容型靜止無功補(bǔ)償系統(tǒng)是一種性價(jià)比優(yōu)越的無功補(bǔ)償裝置。
[Abstract]:Industrial thermal furnace is a typical nonlinear user with high energy consumption. It not only needs to absorb a large amount of reactive power, but also produces many kinds of power quality disturbance pollution, such as serious harmonic wave, voltage fluctuation and three-phase imbalance. With the increasing attention to energy saving and emission reduction and power quality, users and power supply departments pay more and more attention to the development and use of reactive power compensation devices with high performance and price ratio. The hybrid switching capacitive static reactive power compensation system is a kind of high efficiency reactive power compensation device for mine heat furnace, which brings into full play the economic advantage of capacitor reactive power compensation, the advantage of dynamic characteristics of solid state switch switching and the low loss advantage of mechanical switch switching. In recent years, it has become a hot spot in the research of reactive power compensation. In this paper, the theoretical and technical problems involved in the hybrid switching capacitive static Var compensation system for mine heating furnace are studied, which has important theoretical significance and practical application value. In this paper, the working principle and the development trend of reactive power compensation technology are described. The physical structure and electrical characteristics of the power supply system are analyzed, and the electrical model of each component of the power supply system is established. Then, the power factor method, reactive power voltage method, improved matching injection flow algorithm and economic optimization method for calculating the total capacity of reactive power compensation are studied. In the control method, the adjustment between capacitor switching and mine furnace transformer is more reasonable by using the improved nine block diagram control. Then the main circuit physical structure and working principle of the hybrid switching capacitive static var compensation system composed of mechanical switched capacitor (MSCC), compound switch capacitor (RSC-C) and thyristor switch capacitor (TSC-TSC-TSC) are discussed. The detection method of ip-iq signal based on instantaneous reactive power theory is studied. Finally, MATLAB simulation software is used to simulate the working principle, signal detection and control strategy of hybrid switched capacitor static Var compensation system. The main circuit design and controller design of low-voltage hybrid switched capacitor static Var compensation system are carried out. In the main circuit design, the capacitors, mechanical switches and solid-state switches are analyzed in detail. In the design of controller, the hardware circuit design and software development of controller based on STM32F407VGT6 chip are deeply studied. The static Var compensation system with low voltage mixed switching capacitor designed in this paper has been successfully applied in the reactive power compensation of a smelting plant in Yunnan province. The theoretical research, simulation results and the practical application of the hybrid switching capacitor static var compensation system show that the hybrid switched capacitor static Var compensation system studied in this paper is a kind of superior reactive power compensation device with high performance and price ratio.
【學(xué)位授予單位】：長沙理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TM714.3

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本文編號(hào)：1857497