Abstract
The weather system, meteorological conditions, and microphysics of cloud, fog, and rain droplets are studied during the formation, growth, maintenance, and shedding periods of ice accretion on wires in Enshi, Hubei Province in China using 2008/2009 and 2009/2010 winter observations. The comprehensive observations include data of visibility, microphysics of fog and rain droplets, and ice thickness, as well as data from an automated weather station and other routinely recorded meteorological data. The results show that icing occurred during the passage of a cold front, with a high-pressure system and a cold temperature trough at 850 hPa, and a southeasterly at 500 hPa that provided abundant moisture. Ice formation usually started in the evening or early morning, and ice shed around noon the following day when the temperature was −1°C to 0°C. The averaged liquid water content of the fog droplet was distinctly greater during the growth period than during the other three periods, and there was precipitation during the growth period in each case of ice accretion. The growth rate of the ice thickness was clearly correlated with the liquid water content, with a correlation coefficient of 0.62. Simulations using empirical equations were carried out, and the simulated ice thickness agreed with observations fairly well.
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References
Mckay G A, Thompson H A. Estimating the hazard of ice accretion in Canada from climatological data. J Appl Meteorol, 1969, 8: 927–935
Ahti K, Makkonen L. Observation on rime formation in relation to routinely measured meteorological parameters. Geophysica, 1982, 19: 75–85
Sundin E, Makkonen L. Ice loads on a lattice tower estimated by weather station data. J Appl Meteorol, 1998, 37: 523–529
Makkonen L. Modeling of ice accretion on wires. J Appl Meteorol, 1984, 23: 929–939
Lu M L, Popplewell N, Shah A H. Freezing rain simulations for fixed, unheated conductor samples. J Appl Meteorol, 2000, 39: 2385–2396
Fu P, Farzaneh M, Bouchard G. Two-dimensional modelling of the ice accretion process on transmission line wires and conductors. Cold Reg Sci Technol, 2006, 46: 132–146
Jiang X L, Yi H. Transmission Line Regelation Harm and Protection (in Chinese). Beijing: China Power Press, 2002. 2–3
Yang J B, Li Z, Yang F L, et al. Analysis of the features of covered ice and collapsed tower of transmission line snow and ice Attacked in 2008 (in Chinese). Adv Power Syst Hydroelec Eng, 2008, 24: 4–8
Teng Z L. Calculation of ice thickness on overhead lines (in Chinese). Electric Power, 1978, 3: 53–56
Tan G R. On the microclimatological characteristics of icing on wires (in Chinese). Acta Meteorol Sin, 1982, 40: 13–23
Jiang Z F. The growth rate of ice accretion on power line (in Chinese). Chin Sci Bull, 1983, 15: 928–931
Zhang G Q, Zhang J Q, Qi D L, et al. Observation study on wire icing at eastern of Qinghai (in Chinese). J Appl Meteorol Sci, 2006, 17: 508–510
Wu S L, Fan J X, Jiang C Y, et al. Icing of wires with different heights and diameters from Lanzhou to Guanzhong (in Chinese). J Appl Meteorol Sci, 2010, 21: 63–69
Luo N, Wen J F, Zhao C, et al. Observation study on properties of cloud and fog in ice accretion areas (in Chinese). J Appl Meteorol Sci, 2008, 19: 91–95
Zhu C C, Ruan L, Wang T, et al. Analysis and countermeasures to the transmission line icing accidents of Hubei Power Grid (in Chinese). Hubei Electric Power, 2008, 32(Suppl): 82–84
China Meteorological Administration. Specifications for Surface Meteorological Observation (in Chinese). Beijing: Meteorological Press, 2003. 96–100
Ke D, Wang L L, Niu S J, et al. A snowmelt model based on routine meteirilogical data (in Chinese). Trans Atmos Sci, 2010, 33: 555–560
Li R, Niu S J, Wang L L, et al. Comparison of temperatures and ice formations on three types of ground surfaces (in Chinese). Meteorol Monthly, 2011, 37: 325–333
Niu S J, Li R, Lv J J, et al. Research on a numerical modal for predicting three types of underlying surface temperature and ice (in Chinese). Chin J Geophys, 2011, 54: 909–917
Jia R, Niu S J, Li R. Observational study on microphysical characteristics of wire icing in west Hubei (in Chinese). Sci Meteorol Sin, 2010, 30: 481–486
Reisner J, Rasmussen R M, Bruintjes R T. Explicit forecasting of supercooled liquid water in winter storms using the MM5 mesoscale model. Q J R Meteorol Soc, 1998, 124: 1071–1107
Farzaneh M. Atmospheric Icing of Power Networks. Quebec: Springer, 2008. 7–8
Niu S J, Lu C S, Yu H Y, et al. Fog research in China: An overview. Adv Atmos Sci, 2010, 27: 639–661
Gultepe I, Cober S G, Isaac G A, et al. The fog remote sensing and modeling field project. Bull Amer Meteorol Soc, 2009, 90: 341–359
Farzaneh M, Savadjiev K. Statistical analysis of field data for precipitation icing accretion on overhead lines. IEEE Trans Power Del, 2005, 20: 1080–1087
Drage M A, Hauge G. Atmospheric icing in a coastal mountainous terrain: measurements and numerical simulations, a case study. Cold Reg Sci Technol, 2008, 53: 150–161
Finstad K J, Lozowski E P, Makkonen L. On the median volume diameter approximation for droplet collision efficiency. J Atmos Sci, 1988, 45: 4008–4012
Admirat P, Maccagnan M, Goncourt B. Influence of Joule effect and of climatic conditions on liquid water content of snow accreted on conductors. In: Proceedings 4th International Workshop on Atmospheric Icing of Structures, Pairs, France, 1988. 367–371
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Niu, S., Zhou, Y., Jia, R. et al. The microphysics of ice accretion on wires: Observations and simulations. Sci. China Earth Sci. 55, 428–437 (2012). https://doi.org/10.1007/s11430-011-4325-8
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DOI: https://doi.org/10.1007/s11430-011-4325-8