淋雨條件下憎水性涂料對(duì)導(dǎo)電電暈特性的影響
徐清鵬,吳雄,黃鑫,陸曉彬,馬錫良,姜波
(國(guó)網(wǎng)成都供電公司 四川 成都 610041)
摘 要:降雨天氣會(huì)嚴(yán)重影響導(dǎo)線的電暈特性。借助光學(xué)接觸角測(cè)量?jī)x、紫外成像儀等設(shè)備,在電暈籠內(nèi)進(jìn)行了淋雨條件下導(dǎo)線表面涂覆不同憎水性材料時(shí)電暈特性的研究。試驗(yàn)表明,涂覆憎水性涂料導(dǎo)線表面附著少量水滴時(shí),隨著電壓的升高先后經(jīng)歷無(wú)電暈、瞬時(shí)水滴電暈、穩(wěn)定水滴電暈和導(dǎo)線電暈四個(gè)階段。導(dǎo)線表面布滿水滴時(shí)經(jīng)過(guò)局部電暈放電、全面電暈放電階段。同時(shí)與涂敷不同憎水性涂料導(dǎo)線對(duì)比發(fā)現(xiàn),超疏水涂料能夠明顯的提高導(dǎo)線的起暈電壓,PRTV 涂料也能在一定程度上提高導(dǎo)線的起暈電壓。
關(guān)鍵詞:淋雨條件; 交流電場(chǎng); 導(dǎo)線電暈; 憎水性涂料
中圖分類號(hào):TM851 文獻(xiàn)標(biāo)識(shí)碼:A 文章編號(hào):1007-3175(2018)07-0051-04
Impacts of Hydrophobic Coating on Conductive Corona Characteristic Under Raining Condition
XU Qing-peng, WU Xiong, HUANG Xin, LU Xiao-bin, MA Xi-liang, JIANG Bo
(State Gride Chengdu Power Supply Company, Chengdu 610041, China)
Abstract: Rainfall weather would bring huge impacts on the wire corona characteristic. With the help of optics contact angle measuring apparatus and ultraviolet imager etc equipment, this paper researched on the corona characteristic with different hydrophobic coating on the surface of conductor inside corona cage under raining condition. The experiment shows that when a few drops are adhering to conductors, along with the voltage rising, there are four stages including corona free, instant droplets corona, stable droplets corona and conductor corona; when the conductor is full of water, there are both local and overall corona discharge stages. Compared with different hydrophobic coating conductors, it is founded that the super-hydrophobic conductor is obviously superior in the respect of corona voltage, to some extent, the PRTV coating also improves the corona voltage.
Key words: raining condition; AC electric field; wire corona; hydrophobic coating
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