22 11 2018 11 Electri c Machines and Control Vol. 22 No. 11 Nov. 2018 1 2 1 3 1 1 1 1. 7100482. 710072 3. 710054 DOI10. 15938 /j. emc. 2018. 11. 012 TM 216 A 1007-449X201811-0089- 07 Effects of carbonization of insulator core rod on properties of electric field distribution CAO Wen 1 2 LUAN Ming-jie 1 SHEN Wei 3 HUANG Xin-bo 1 MA Huan-cheng 1 TIAN Yi 1 1. School of Electronic InformationXi'an Polytechnic UniversityXi'an 710048China 2. School of Mechanical EngineeringNorthwestern Polytechnical UniversityXi'an 710072 China 3. Electric Power Research Institute of State Grid Shanxi Electric Power CompanyXi'an 710054China AbstractThe degraded composite insulator easily causes flashovertripping and brittle fracture of the transmission linewhich seriously threaten the safety of power system. The insulators with the carbonization channel between the sheath and the mandrel were studied. The electric field around the carbonized mandrel bar was calculated and analyzed by finite element method. The simulation model of the insulator was established. The electric field distribution along the carbonization channel between sheath and mandrel was measured in laboratory. The experimental data were in good agreement with the simulation resultsand the correctness of theoretical calculation was verified. The results show that the carbide channel make the space electric field value distortion the closer is channel from high voltage side the more obvious is distortionthe electric field value inside the insulator shed of the carbonization channel is increased. 2017-02 - 20 51707141 2014KCT - 16 1983 1995 1983 1975 1989 1984
90 22 Keywordscomposite insulatordegradationcarbonized mandrelelectric field distributionsimulating calculation 0 COMSOL 1-4 1 1. 1 FXB2-110 /100 5-10 20 110 kv 1 1 11 Table 1 Structural parameters of composite insulator ANSYS 500 kv /kv 110 /kn 100 12 /mm 1 240 /mm 1 000 /mm 3 150 13 /kv 550 141 min /kv 230 thermally stimulated current TSC F X B W 15-16 110 110 kv100 100 kn 2 COMSOL 1 O 3 N 2 2
11 91 1 10 10 110 kv 89. 8 kv 0 180 kv /m 80% 5% 2 2 Table 2 2 1 Fig. 1 Simulation model Relative dielectric constant of each material 1. 006 1 10 10 3. 5 4. 6 7 10 4 1. 2 1. 2. 1 2 2 Fig. 2 Cloud picture of electric field distribution 2 of carbide channel 1 mm 100 3 2 3 25 mm Fig. 3 Results of simulation of different position 3 of carbide channel 1. 2. 2 4
92 22 4 20 kv /m 2 5 1 mm 40 2. 1 100 mm 0 ~ 400 V GDC100 1 000 1 DS1102 Fig. 4 Poker' s 6 4 Sketch map of different carbide channel length Fig. 6 5 Fig. 5 Simulation results of different carbide channel length 7 Poker' s 2 10 mm 2 5 2 2 5 pf 5 kv /m 7 5 Fig. 7 Picture of probe 2 10 kv /m 2 6 Schematic diagram of test principle for probe
11 93 7 A B C D E F G 8 8 Fig. 8 Diagram of the electric field test of composite 10 insulator Fig. 10 Testing location for insulator samples with carbonized channel 2. 2 2. 3 Φ1 mm 2 9 3 30 kv 2 11 12 Fig. 9 9 Insulator samples containing carbide channel 2 11 1 Fig. 11 Results of electric field measurement for 1 st group of carbonized channel in high 1b 2 voltage side 1 2 ~ 3 2 11 S1 12 S3 9 ~ 10 10 11 S2 12 S4
94 22 1 20025 3. 12 2 4. Fig. 12 Results of electric field measurement for 2 nd group of carbonized channel in middle of string J. 2003 271 34. LIANG XidongWANG ChengshengFAN Ju. Research on brittle fracture of FRP rods and the test method J. Power System Technology2003271 34. J. 2009 132 232. 2 J. Electric Machines and Control 3 Analysis and counter- FXB2-110 /100 7 2006 71162. HAN JihuiSHEN QingheYONG Jun. measure of brittle fracture of composite insulator 1 2009. 9 2009. 2 J 2015 203 82. 11. 3. J. WANG GuochunCHEN Yuan. Composite insulator service in Beijing-Tianjin-Tangshan power network J. Insulators and Surge Arresters 20025 3. 2. J. 20032 7. XU QiyingLI Rilong. Analysis and discussion of composite insulator J. Insulating Materials20032 7. 3. J. 2011 377 1677. HUANG XinboOUYANG LishaWANG Yanaet al. Analysis on key influence factor of transmission line icing J. High Voltage Engineering2011377 1677. 5. TAO WeiliangWANG XianpeiLIU Yanet al. Measurement on composite insulators' contact angles based on image processing 2009 132 232. 6. J. 2014 181178. WANG FochiYAN KangZHANG Zhongyuan et al. Identifying insulator hydrophobicity by image analysis and neural network J. Electric Machines and Control 2014 181178. quipment 2006 71162. 8. J. J. Electrical E-. D.. D. 10. / J. 2015 203 82. WANG FeifengZHANG PeihongGAO Mingze. Research on the dielectric characteristics of nano-sic / silicone rubber composites. Journal of Harbin University of Science and Technology 500 kv J. 2012 384 922. XIE CongzhenLIU ShanLIU Qinet al. Internal defects influence of 500 kv AC composite insulator on the electric field distribution along the axisj. High Voltage Engineering 2012 38
11 95 4 922. 12. on TSC test J. Proceedings of the CSEE201232 J. 2010 3016118. JIANG XingliangXIA QiangfengHU Qinet al. Influence of deteriorated insulator on the electric field distribution of overhang string J. Proceedings of the CSEE 2010 3016118. 19 169. 15. J. 1999 251 39. LI ChengrongCHEN YuCHENG Yangchun. On-line detection 13. of internal defects of composite insulator by electric field mapping J. 2006 306 58. CHEN YuanLIU YanshengSHEN Jianet al. Inner-defect detection method for composite insulatorsj. Power System Technology2006306 58. 14. TSC insulator J J. 2012 32 19169. ZHANG HuiTU YoupingTONG Yuliang. Study on aging characteristics of silicone rubber sheds of composite insulators based J. High Voltage Engineering 1999251 39. 16. J. 1997 233 72. SU Mei. The role of steep wave test in the detection of composite. High Voltage Engineering1997233 72.