|
|
|
| Influences of Chlorococcum Growth on the Electrical Performance of Post Insulators with RTV Coating |
| Li Yawei1,Zhang Xinghai1,Chen Hongbo1,Bai Huan1,Yang XiaoleiXia1,2,Yang Hao2 |
Electric Power Research Institute of State Grid Sichuan Electric Power Company Chengdu 610072 China;
2. Xi’an Jiaotong University Xi’an 710049 China |
|
|
|
|
Abstract In the humid area like Sichuan Province, chlorococcum often grows abundantly on the surface of post insulators with RTV coat, which may increase the risk of pollution flashover. To address the problem, in this paper, investigations on the growth conditions, the species, the growth habit and the distribution status of the chlorococcum was carried out. Besides, the influence of chlorococcum layer on the hydrophobicity of RTV coat was studied. At last, the switching impulse withstand performance and pollution flashover withstand performance of the chlorococcum polluted insulator were tested. The results indicate that the chlorococcum mainly grows on the top surfaces of the skirts, which will lead to obvious decrease of hydrophobicity of the top surface of the insulator, thus the pollution flashover voltage declines significantly. However, the operating impulse flashover performance is seldom or never affected by the chlorococcum layer.
|
|
Received: 10 September 2014
Published: 14 September 2015
|
|
|
|
|
|
[1] Gubanski, S. M. , Karlsson S, and Fernando M. A. R. Performance of biologically contaminated high voltage insulators[C]. Industrial and Information Systems, First International Conference on IEEE, 2006.
[2] Gubanski S M, Demfalk A, Wallstrom S, et al. Performance and diagnostics of biologically conta- minated insulators. Properties and applications of Dielectric Materials[C]. 8th International Conference on Properties and applications of Dielectric Materials, Udayana, Bali, Indonesia, 2006: 23-30.
[3] Fernando M A R M, and Gubanski S M. Tropical environmental impacts on surface properties of nonceramic insulators[C]. International Conference on Electric Power Engineering, Budapest, Hungary, 1999.
[4] Rocha J M S, Garcia J E C, Henriques M H F. Growth aspects of the marine microalga Nannochloropsis gaditana[J]. Bimolecular Engineering, 2003, 20: 237-242.
[5] Bengtsson M, Gronlund R, Sjoholm M, et al. Deve- lopment of a tool for remote detection of fungi and Chlorococcum on electrical insulators using laser induced fluorescence combined with principal com- ponent analysis[C]. Conference on Lasers and Electro- Optics Europe-Technical Digest, 2005.
[6] Bengtsson M, Gronlund R, Sjoholm M, et al. Lidar fluorescence measurements of algal growth on elec- trical insulators[C]. 2003 Conference on Lasers and Electro-Optics Europe (CLEO/Europe 2003). IEEE, 2003.
[7] 蒋霞敏. 温度,光照,氮含量对微绿球藻生长及脂肪酸组成的影响[J]. 海洋科学, 2002, 26(8): 9-13. Jiang X. Effects of temperatures, light intensities, and nitro gen concentrations on the growth and fatty acid compositions of nannochloropsis oculata[J]. Marine Science, 2002, 26(8): 9-13.
[8] 陈洁, 段舜山, 李爱芬, 等. 眼点拟微绿球藻与扁藻在不同接种比例下的竞争[J]. 海洋科学, 2003, 27(5): 73-76. Chen J, Duan S, Li A et al. Effect of Apoprotein on Antioxidant Activity of Phycobiliproteins[J]. Marine Science, 2003, 27(5): 73-76.
[9] 蒋兴良, 王军, 苑吉河, 等. 模拟与自然环境下0.5~1.5m空气间隙正极性操作冲击放电电压校正方法[J], 中国电机工程学报. 2008, 28(28): 13-17. Jiang X, Wang J, Yuan J, et al. Correction method of positive switching impulse discharge voltage for 0.5-1.0m air gap under artificial and natural con- ditions[J]. Proceedings of the CSEE, 2008, 28(28): 13-17.
[10] IEC 507, Artificial pollution tests on high voltage insulators to be used on a. c. systems[S].
[11] 蒋兴良, 舒立春, 孙才新. 电力系统污秽与覆冰绝缘[M]. 北京: 中国电力出版社, 2009. |
|
|
|
2015, Vol. 30 
