本文關(guān)鍵詞：開(kāi)關(guān)電器電弧混沌特性判定與調(diào)控　出處：《沈陽(yáng)工業(yè)大學(xué)》2014年博士論文　論文類(lèi)型：學(xué)位論文

  更多相關(guān)文章： 開(kāi)關(guān)電弧 混沌 時(shí)間序列 相空間重構(gòu) 復(fù)雜網(wǎng)絡(luò)

【摘要】：電力工業(yè)的發(fā)展關(guān)乎國(guó)計(jì)民生，與之相配套的輸變電設(shè)備則為現(xiàn)代堅(jiān)強(qiáng)電網(wǎng)之骨骼。開(kāi)關(guān)電器作為重要的輸配電設(shè)備之一，在開(kāi)斷過(guò)程中不可避免地會(huì)產(chǎn)生電弧，其在毫秒級(jí)時(shí)間、毫米級(jí)空間內(nèi)快速動(dòng)態(tài)變化，從而影響開(kāi)關(guān)開(kāi)斷性能。電弧作為物質(zhì)形態(tài)的第四態(tài)，其衍生機(jī)理和發(fā)展規(guī)律是國(guó)內(nèi)外研究者們普遍關(guān)注的研究熱點(diǎn)與難點(diǎn)。本文通過(guò)引入混沌理論，從混沌時(shí)空域探究不同介質(zhì)開(kāi)關(guān)電弧之共性機(jī)理，以發(fā)現(xiàn)電弧之內(nèi)在本質(zhì)規(guī)律，，實(shí)現(xiàn)電弧調(diào)控。 基于黑盒電弧模型理論分析與實(shí)驗(yàn)的低壓空氣電弧混沌特性研究。自主搭建220V空氣電弧發(fā)生裝置，以實(shí)際負(fù)載為研究對(duì)象，采用混沌相空間重構(gòu)理論、C-C方法、Wolf算法和Cao方法，對(duì)純阻性、阻感性負(fù)載下空氣電弧電流動(dòng)態(tài)變化進(jìn)行定量分析，找出其混沌吸引子及通往混沌的道路；引入Cassie電弧模型，采用理論分析與實(shí)測(cè)數(shù)據(jù)比照，發(fā)現(xiàn)并描述其混沌特征。 基于三維耦合場(chǎng)域分析與合成回路試驗(yàn)線路模擬的中壓真空電弧混沌特性研究。以40.5kV/25kA真空斷路器為研究對(duì)象，采用有限元法進(jìn)行數(shù)值模擬，得到不同觸頭結(jié)構(gòu)型面縱向磁場(chǎng)時(shí)間序列，找到變觸頭結(jié)構(gòu)與混沌特征之間的聯(lián)系；引入DL標(biāo)準(zhǔn)四參數(shù)和兩參數(shù)合成回路試驗(yàn)線路模型，將真空斷路器置于試驗(yàn)?zāi)M系統(tǒng)中，得到元件與系統(tǒng)中混沌行為演變；引入真空連續(xù)過(guò)渡模型，得到真空斷路器開(kāi)斷過(guò)程中電弧行為定量描述，發(fā)現(xiàn)其線路中混沌特性與真空電弧吸引子形態(tài)。 基于冷氣流開(kāi)斷的高壓SF6斷路器氣流參數(shù)混沌變化追蹤與分析。以252kV SF6斷路器為研究對(duì)象，采用有限體積法與因子分析法相結(jié)合，得到開(kāi)斷全程中氣流參數(shù)主要影響因素，分析其主元成分，得出評(píng)估氣流參數(shù)性能數(shù)學(xué)描述；以550kV SF6斷路器為對(duì)象，采用有限體積法對(duì)氣流湍動(dòng)特性進(jìn)行分析，以動(dòng)靜觸剛分時(shí)刻為時(shí)間節(jié)點(diǎn)，分析湍流參數(shù)在超程前后兩時(shí)間段內(nèi)湍流參數(shù)混沌特性，發(fā)現(xiàn)湍流自身所存在的間歇性，以及湍流區(qū)與非湍流區(qū)邊界時(shí)空的不確定性。 基于短路大電流開(kāi)斷的高壓SF6斷路器電弧混沌行為研究。以550kV SF6斷路器為研究對(duì)象，引入等效單元?jiǎng)討B(tài)電弧模型，采用有限體積法對(duì)短路開(kāi)斷情況下流場(chǎng)進(jìn)行數(shù)值模擬。通過(guò)對(duì)不同氣流參數(shù)觀測(cè)點(diǎn)時(shí)間序列提取，與冷氣流開(kāi)斷相對(duì)比，得出高壓SF6電弧混沌行為具有時(shí)空混沌特性，且為陣發(fā)混沌態(tài)。通過(guò)追蹤電弧與氣流運(yùn)動(dòng)形態(tài)，發(fā)現(xiàn)開(kāi)斷過(guò)程中，可通過(guò)增加電弧湍流區(qū)域，擴(kuò)大電弧與氣流相互作用區(qū)域，實(shí)現(xiàn)快速熄弧。通過(guò)改變噴口結(jié)構(gòu)型面，得到不同噴口結(jié)構(gòu)下氣流參數(shù)混沌特性，得出變噴口結(jié)構(gòu)是調(diào)整混沌強(qiáng)弱的有效途徑，優(yōu)化噴口結(jié)構(gòu)可降低混沌效應(yīng)，提高斷路器開(kāi)斷能力，實(shí)現(xiàn)混沌調(diào)控與利用。 基于不同介質(zhì)開(kāi)關(guān)電弧時(shí)間域、相空間域特性分析的網(wǎng)絡(luò)空間域共性研究。通過(guò)對(duì)空氣電弧、真空金屬蒸氣電弧和SF6氣體電弧參數(shù)時(shí)間序列復(fù)雜網(wǎng)絡(luò)重構(gòu)，將時(shí)間域數(shù)據(jù)以相空間理論拓展至網(wǎng)絡(luò)空間域中，并對(duì)其所構(gòu)建網(wǎng)絡(luò)特征進(jìn)行分析，以此進(jìn)行不同介質(zhì)形態(tài)電弧共性問(wèn)題研究，發(fā)現(xiàn)不同介質(zhì)開(kāi)關(guān)時(shí)間序列網(wǎng)絡(luò)域結(jié)構(gòu)均具有無(wú)標(biāo)度特性，均具有復(fù)雜網(wǎng)絡(luò)特征�！盎煦纭焙汀皬�(fù)雜網(wǎng)絡(luò)”為不同介質(zhì)開(kāi)關(guān)電弧理論與實(shí)驗(yàn)研究在時(shí)間域、相空間域與網(wǎng)絡(luò)域之間架起一座嶄新的橋梁。
[Abstract]:The development of electric power industry is related to the livelihood of the state , and the power transmission equipment matched with it is the skeleton of the modern strong power grid . As one of the important power transmission and distribution equipment , the switch electric appliance inevitably generates an arc during the breaking process , which affects the breaking performance of the switch . The derivative mechanism and the development law of the arc as the fourth state of the material form are the research hotspot and the difficulty that the researchers at home and abroad have generally concerned . In this paper , through the introduction of the chaos theory , the common mechanism of the different medium switch arcs is explored from the space domain in chaos , so as to find out the essence rule in the arc and realize arc regulation . Based on the theory of black box arc model and the experimental investigation of the chaotic characteristics of low pressure air arc , a 220V air arc generator is built . The dynamic changes of the air arc current under the load of pure resistance and inductive load are analyzed quantitatively by using the chaos phase space reconstruction theory , the C - C method , the Wolf algorithm and the Cao method . The chaos attractor and the road to chaos are found out . Based on three - dimensional coupled field domain analysis and synthetic loop test line simulation , the chaotic characteristics of the medium - voltage vacuum arc are studied . The finite element method is used for numerical simulation to obtain the relationship between the structure of the contact structure and the chaotic feature . The vacuum circuit breaker is put into the test simulation system to obtain the evolution of the chaotic behavior in the components and the system . The vacuum continuous transition model is introduced to obtain the quantitative description of the arc behavior in the open - off process of the vacuum circuit breaker , and the chaotic characteristics and the vacuum arc attractor morphology in the circuit are found . In this paper , a 252kV SF6 circuit breaker is used as the research object , and a finite volume method and a factor analysis method are adopted to analyze the main components of the gas flow parameters . The chaotic behavior of high - voltage SF6 circuit breaker based on short - circuit large - current breaking is studied in this paper . By using the 550 kV SF6 circuit breaker as the research object , the dynamic arc model of equivalent unit is introduced . By using finite volume method , the chaotic behavior of high - voltage SF6 arc is simulated . In this paper , the time domain data is expanded into the network space domain based on the time series complex network reconfiguration of the arc time domain of the different medium switches , the time domain data is expanded into the network space domain by the phase space theory , and the network characteristics are analyzed .

【學(xué)位授予單位】：沈陽(yáng)工業(yè)大學(xué)
【學(xué)位級(jí)別】：博士
【學(xué)位授予年份】：2014
【分類(lèi)號(hào)】：TM561.3

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