绝缘子表面灰尘颗粒分布
|
摘要
为研究绝缘子表面灰尘颗粒径分布状态,以ZS(W)35KV/6-8瓷棒形支柱绝缘子为研究对象,利用DEMCFD耦合方法模拟绝缘子表面动态积污过程,使用离散元方法综合分析绝缘子在积污过程中各个表面灰尘颗粒的分布情况。结果表明:灰尘颗粒主要集中在绝缘子迎风面,背风面较少,颗粒主要分布在伞裙的上表面、伞棒、下表面凹陷区3个部位,同时绝缘子表面积污颗粒数随时间的延长而增加,积污速率基本保持不变;同尺寸的绝缘子,下表面有凸棱的积污颗粒更多,凸棱会增大绝缘子的表面积和流场扰动,容易积污。
In order to study the particle size distribution of the dust particles on the insulator surface,the ZS(W)-35KV/6-8 insulator was used as the object of study. The DEM-CFD coupling method was used to simulate the dynamic fouling process of the insulator surface. The discrete element method was used to analyze the insulator distribution of dust particles on each surface of the process. The results show that the accumulation of insulator on the windward side is more serious than that of the leeward. The plot is mainly concentrated in the three parts of the surface and the umbrella transition area( umbrella rod) and the depression area of the lower surface of the umbrella skirt. The number of dirt particles sticking on insulator surface also increases with the extension of time,but the sticking rate remains unchanged basically. For different size of insulators,there is more dust particles sticking on insulator surface that has bead at lower surface,the bead can increase the surface area and increase the disturbance of the fluid,it is more available for deposition of the dust particles.
In order to study the particle size distribution of the dust particles on the insulator surface,the ZS(W)-35KV/6-8 insulator was used as the object of study. The DEM-CFD coupling method was used to simulate the dynamic fouling process of the insulator surface. The discrete element method was used to analyze the insulator distribution of dust particles on each surface of the process. The results show that the accumulation of insulator on the windward side is more serious than that of the leeward. The plot is mainly concentrated in the three parts of the surface and the umbrella transition area( umbrella rod) and the depression area of the lower surface of the umbrella skirt. The number of dirt particles sticking on insulator surface also increases with the extension of time,but the sticking rate remains unchanged basically. For different size of insulators,there is more dust particles sticking on insulator surface that has bead at lower surface,the bead can increase the surface area and increase the disturbance of the fluid,it is more available for deposition of the dust particles.
引文
[1]FARZANEH M.覆冰与污秽绝缘子[M].北京:机械工业出版社,2014.
[2]马振良.不带电绝缘子和带电绝缘子积污程度的对比实验[J].高电压技术,1993(4):33-35.
[3]张开贤.悬式绝缘子串自然积污规律的探讨[J].电网技术,1997(3):39-43.
[4]RAVELOMANANTSOA N,FARZANEH M,CHISHOLM W A.Insulator pollution processes under winter conditions[C]//Electrical Insulation and Dielectric Phenomena,2005 Annual Report Conference,2005:321-324.
[5]ZHOU W,LIU M,LIU S,et al.On the mechanism of insulator cleaning using dry ice[J].IEEE Transactions on Dielectrics&Electrical Insulation,2012,19(19):1715-1722.
[6]PIETERSEN D,HOLTZHAUSEN J P,VOSLOO W L.An investigation into the methodology to develop an insulator pollution severity application map for South Africa[C]//AFRICON,2004.7th AFRI-CON Conference in Africa.IEEE,2004:697-703.
[7]CHAOU K A,MEKHALDI A,TEGUAR M.Classification of pollution severity on insulator model using recurrence quantification analysis[C]//2014 IEEE/PES Transmission&Distribution Conference&Exposition(T&D),2014:1-5.
[8]CHUN S,PARK C.Analysis of contaminants adhered on polymeric insulator used in coastal and industrial areas[C]//Electrical Insulation and Dielectric Phenomena,CEIDP 2008,Annual Report Conference,2008:1-4.
[9]GUBANSKI S M,WANKOWICZ J G.Distribution of natural pollution surface layers on silicone rubber insulators and their UV absorption[J].IEEE Transactions on Electrical Insulation,1989,24(4):689-697.
[10]TOPALIS F V,GONOS I F,STATHOPULOS I A.Dielectric behavior of polluted porcelain insulators[J].IET Proceedings-Generation Transmission and Distribution,2001,148(4):269-274.
[11]宋云海.基于表面电导的绝缘子积污在线监测系统[D].广州:华南理工大学,2011.
[12]刘琴.线路绝缘子自然积污差异性分析[C]//中国电机工程学会年会,2012.
[13]王福军.计算流体动力学分析[M].北京:清华大学出版社,2004.
[14]刘凯,朱天容,刘庭,等.绝缘子污秽成分分析与清洗剂去污机理研究[J].高电压技术,2012,38(4):892-898.
[15]屠幼萍,孙佑飞,彭庆军,等.雾霾环境下自然积污绝缘子的污秽颗粒粒径分布特性[J].高电压技术,2014,40(11):3318-3326.
[16]孙其诚,王光谦.颗粒物质力学导论[M].北京:科学出版社,2009.
[17]蒋兴良,李海波.计算流体力学在绝缘子积污特性分析中的应用[J].高电压技术,2010,36(2):329-334.
[18]孙继星,吴广宁,陈维荣,等.强风环境下棒形绝缘子积污动态仿真分析[J].西南交通大学学报,2012,47(3):413-419.
[19]孙继星,徐跃,胡学永,等.高速气流环境中电气化铁路绝缘子表面积污分布特性[J].高电压技术,2014,40(1):95-102.
[20]胡国明.颗粒系统的离散元素法分析仿真[M].武汉:武汉理工大学出版社,2010.
[2]马振良.不带电绝缘子和带电绝缘子积污程度的对比实验[J].高电压技术,1993(4):33-35.
[3]张开贤.悬式绝缘子串自然积污规律的探讨[J].电网技术,1997(3):39-43.
[4]RAVELOMANANTSOA N,FARZANEH M,CHISHOLM W A.Insulator pollution processes under winter conditions[C]//Electrical Insulation and Dielectric Phenomena,2005 Annual Report Conference,2005:321-324.
[5]ZHOU W,LIU M,LIU S,et al.On the mechanism of insulator cleaning using dry ice[J].IEEE Transactions on Dielectrics&Electrical Insulation,2012,19(19):1715-1722.
[6]PIETERSEN D,HOLTZHAUSEN J P,VOSLOO W L.An investigation into the methodology to develop an insulator pollution severity application map for South Africa[C]//AFRICON,2004.7th AFRI-CON Conference in Africa.IEEE,2004:697-703.
[7]CHAOU K A,MEKHALDI A,TEGUAR M.Classification of pollution severity on insulator model using recurrence quantification analysis[C]//2014 IEEE/PES Transmission&Distribution Conference&Exposition(T&D),2014:1-5.
[8]CHUN S,PARK C.Analysis of contaminants adhered on polymeric insulator used in coastal and industrial areas[C]//Electrical Insulation and Dielectric Phenomena,CEIDP 2008,Annual Report Conference,2008:1-4.
[9]GUBANSKI S M,WANKOWICZ J G.Distribution of natural pollution surface layers on silicone rubber insulators and their UV absorption[J].IEEE Transactions on Electrical Insulation,1989,24(4):689-697.
[10]TOPALIS F V,GONOS I F,STATHOPULOS I A.Dielectric behavior of polluted porcelain insulators[J].IET Proceedings-Generation Transmission and Distribution,2001,148(4):269-274.
[11]宋云海.基于表面电导的绝缘子积污在线监测系统[D].广州:华南理工大学,2011.
[12]刘琴.线路绝缘子自然积污差异性分析[C]//中国电机工程学会年会,2012.
[13]王福军.计算流体动力学分析[M].北京:清华大学出版社,2004.
[14]刘凯,朱天容,刘庭,等.绝缘子污秽成分分析与清洗剂去污机理研究[J].高电压技术,2012,38(4):892-898.
[15]屠幼萍,孙佑飞,彭庆军,等.雾霾环境下自然积污绝缘子的污秽颗粒粒径分布特性[J].高电压技术,2014,40(11):3318-3326.
[16]孙其诚,王光谦.颗粒物质力学导论[M].北京:科学出版社,2009.
[17]蒋兴良,李海波.计算流体力学在绝缘子积污特性分析中的应用[J].高电压技术,2010,36(2):329-334.
[18]孙继星,吴广宁,陈维荣,等.强风环境下棒形绝缘子积污动态仿真分析[J].西南交通大学学报,2012,47(3):413-419.
[19]孙继星,徐跃,胡学永,等.高速气流环境中电气化铁路绝缘子表面积污分布特性[J].高电压技术,2014,40(1):95-102.
[20]胡国明.颗粒系统的离散元素法分析仿真[M].武汉:武汉理工大学出版社,2010.