Suzhou Electric Appliance Research Institute
期刊號(hào): CN32-1800/TM| ISSN1007-3175

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靜止無(wú)功發(fā)生器模塊間銅排發(fā)熱分析及優(yōu)化

來(lái)源:電工電氣發(fā)布時(shí)間:2020-12-18 15:18 瀏覽次數(shù):716
靜止無(wú)功發(fā)生器模塊間銅排發(fā)熱分析及優(yōu)化
 
郭黎黎,鄭毅,張科乾,陶佳
(常州博瑞電力自動(dòng)化設(shè)備有限公司,江蘇 常州 213025)
 
    摘 要:某靜止無(wú)功發(fā)生器(SVG)運(yùn)行時(shí),模塊間連接銅排局部溫升會(huì)遠(yuǎn)超出溫升限值,迫使SVG退出運(yùn)行,其所在母線因?yàn)槭o(wú)功支撐,電壓大幅下降,嚴(yán)重威脅系統(tǒng)的穩(wěn)定性。針對(duì)SVG模塊間連接銅排局部過(guò)熱的問(wèn)題,排除了常規(guī)因素截面、集膚效應(yīng)、接觸電阻等的影響,通過(guò)理論計(jì)算與仿真對(duì)比分析出銅排過(guò)熱原因?yàn)殂~排結(jié)構(gòu)及布置方式不合理,通過(guò)調(diào)整銅排結(jié)構(gòu)、布置方式以及對(duì)SVG自身結(jié)構(gòu)的改進(jìn)等措施,將銅排溫升限制在合理范圍內(nèi),保障SVG安全可靠運(yùn)行,以提供穩(wěn)定的電壓支撐。
    關(guān)鍵詞:靜止無(wú)功發(fā)生器;銅排;局部過(guò)熱;仿真;優(yōu)化
    中圖分類號(hào):TM714.3;TM761     文獻(xiàn)標(biāo)識(shí)碼:B     文章編號(hào):1007-3175(2020)12-0061-05
 
Analysis of Copper Bar Heating Problem Used for Static Var Generator Module
Connecting and Optimization Method Research
 
GUO Li-li, ZHENG Yi, ZHANG Ke-qian, TAO Jia
(NR Electric Power Electronics Co., Ltd, Changzhou 213025, China)
 
    Abstract: When a static var generator (SVG) is running, the local temperature rise of the copper busbars connected between the modules will far exceed the temperature rise limit, forcing the SVG to exit operation. The bus bar on which it is located loses reactive support and the voltage drops significantly, which seriously threatens the system stability. Aiming at the local overheating of copper bars connected between SVG modules, the influence of conventional factors such as cross-section, skin effect, contact resistance, etc. has been eliminated. Through theoretical calculation and simulation comparison, it is analyzed that the reason for copper bar overheating is that the structure and layout of copper bars are unreasonable. By adjusting the structure and layout of the copper bar, and improving the structure of the SVG itself, the temperature rise of the copper bar is limited to a reasonable range, and the safe and reliable operation of the SVG is guaranteed to provide stable voltage support.
    Key words: static var generator; copper bar; heating phenomenon; simulation; optimization
 
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