A kinetic energy budget on the severe wind production that causes a serious state grid failure in Southern Xinjiang China

Atmospheric Science Letters - Tập 21 Số 7 - 2020
Shenming Fu1, Shuanglong Jin2, Wei Shen3, Danyu Li4, Bin Liu4, Jianhua Sun5
1International Center for Climate and Environment Sciences, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
2State Key Laboratory of Operation and Control of Renewable Energy and Storage Systems, China Electric Power Research Institute, Beijing, China
3Power Equipment Status Evaluation Department, Electric Power Research Institute of State Grid Shaanxi Electric Power Company, China
4Power Transmission and Transformation Engineering Department, China Electric Power Research Institute, Beijng, China
5Laboratory of Cloud Precipitation Physics and Severe Storms, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China

Tóm tắt

AbstractBased on the European Centre for Medium‐Range Weather Forecasts (ECMWF) ERA5 reanalysis data, in this study, formation mechanisms of a severe windstorm that caused successive trippings of the transmission lines in Southern Xinjiang were investigated. The strong windstorm occurred within a lower‐tropospheric warm region due to adiabatic heating of the descending motions ahead of a shortwave trough in the westerly wind (the blocking effects of high mountain was a key reason for the strong descending motions). The kinetic energy (KE) budget indicates two typically different stages appeared in the variation of the windstorm. The former stage showed a rapid wind KE enhancement in the lower troposphere. The KE increase was mainly governed by the downward stretching of high KE (i.e., downward momentum transportation) from the middle troposphere (rather than from the upper‐level jet) and the KE production due to the work on rotational wind by the pressure gradient force. The latter stage showed a rapid KE decrease mainly due to the transport of KE by the rotational wind and the pressure gradient force's negative work on the rotational wind. In contrast, the vertical advection of KE still acted as transporting high KE from middle troposphere to lower troposphere, which resisted the KE reduce at the lower levels.

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Tài liệu tham khảo

10.1016/j.physa.2019.122177

10.1175/1520-0493(1978)106<0458:TEODAN>2.0.CO;2

10.2151/jmsj.2019-002

10.1175/1520-0469(1986)043<2527:ALADWP>2.0.CO;2

10.1007/s00376-010-0026-z

Fu S.‐M., 2012, Energy budget of a cold surge process during the winter monsoon period of 2004, Climatic and Environmental Research, 17, 549

He Y., 2011, Risk assessment of natural disaster in urban electric power network planning, Transactions of China Electrotechnical Society, 26, 205

Hersbach H.andD.Dee.2016.ERA5 reanalysis is in production. ECMWF Newsletter No. 147 ECMWF Reading 7. Available at:www.ecmwf.int/sites/default/files/elibrary/2016/16299-newsletter-no147-spring-2016.pdf

10.1080/10473289.2011.617628

Lu B., 2014, Numerical study of severe downslope winds at Kelamayi, XinJiang, Acta Meteorologica Sinica, 72, 1218

Luo H., 2016, Study on the impact of weather on electricity consumption in Xi‐An and its application to mid‐long term prediction, Meteorological Monthly, 42, 54

10.1002/9780470682104

Song H., 2019, Research on the application of meteorological disaster model in power grid transportation inspection business, Journal of Catastrophology, 4, 68

10.1175/2009WAF2222253.1

Sun J., 2011, Analysis of state grid security operation in 2010, Electric Power, 44, 1

Tang H.L., 2011, Mesoscale numerical simulation of the 28 February 2007 gale in Xinjiang, Meteorology Monthly, 37, 1365

Wang C.H., 2011, Simulation and analysis of the thermal‐dynamics characteristics of “2.28” severe wind event in Xinjiang with WRF model, Journal of Desert Research, 31, 511

Xie Q., 2006, Current situation of natural disaster in electric power system and counter measures, Journal of Natural Disasters, 15, 126

10.1007/s00376-011-0185-6

Yang X.C., 2006, The relationship between severe dust storms of northern China and the Asian tropospheric wind field, Climatic and Environmental Research, 11, 94

10.1080/16742834.2014.11447226

Yang W.L., 2019, Research on calculation method of windage yaw of large height difference jumper wire under zero‐degree wind, Electric Power Science and Engineering, 35, 8

Yang J., 2009, Relationship of power load and weather in agricultural region of Xinjiang, Meteorological Monthly, 35, 114

Yang J., 2010, The forecast products of T213 used in power load forecast, Meteorological Monthly, 36, 123

10.1016/j.eswa.2015.05.042

10.1175/MWR-D-17-0355.1

10.1080/16742834.2019.1569455

Zhuang X., 2016, Analysis of a snowstorm weather process in a coexisting warm area and cold front in northern Xinjiang, Climatic and Environmental Research, 21, 17

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Atmospheric Science Letters

Tập 21 Số 7

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