麻城“7.1”暴雨过程特征及对光伏电站影响分析
Analysis on Characteristics of “7.1” Torrential Rains in Macheng and Flood Security Influence of PV Power Station
中文摘要：
通过分析麻城地区的暴雨洪涝灾害情况，结合现场调查，基于气候统计分析方法和极值I型分布理论，研究了 2016年6月30日—7月2日麻城“7.1”暴雨过程的降水特征及其对光伏电站的影响，探讨了光伏电站洪涝灾害的成灾机制及防治洪涝灾害的措施。结果表明：1）在西南急流影响下，“7.1”暴雨过程达到特大暴雨级别，且麻城国家气象站过程降水量为433.1 mm。2）2016年7月1日麻城站日降水量为333.6 mm，历年最大日降水量历史排位第1，推算重现期为367年一遇；2016年6月30日19—22时累计降水量为155.2 mm，历年连续4 h最大降水历史排位第2，推算重现期为51 年一遇。3）“7.1”暴雨期间，麻城市处于湖北省五大区域山洪（泥石流）灾害等级预报站点降水临界指标的R3级，极易发生山洪地质灾害。梅雨期的大范围强降水导致短时间内麻城市境内河流水位暴涨，水库超汛限水位，加之水利防洪设施不足，导致严重洪涝灾害，周边某光伏电站被淹，造成巨大经济损失。
中文关键词：
暴雨，洪涝灾害，极值I型分布，光伏电站
KeyWords：
rainstorm, prevent flood disasters, extreme I distribution, PV power stationation
Abstract：
Analysis on Characteristics of “7.1” Torrential Rains in Macheng and Flood Security Influence of PV Power Station Wang Biqiang1 , Chen Zhenghong1 , Sun Pengjie1 , Yan Guogang2 , Zhuang Lingjie2 , Dang Chaoqi3 (1 Hubei Provincial Meteorological Service Center, Wuhan 430070 2 Wuhan Rixin Technology Co., Ltd, Wuhan 430073 3 Shaanxi Provincial Meteorological Service Center, Xi’an 710014) Abstract: Based on the analysis of the rainstorm and flood disasters in Macheng area, combined with the field investigation, the precipitation characteristics of Macheng “7.1” rainstorm during the June 30?July 2 in 2016 and its impact on PV power station were studied by using climate statistical analysis method and extreme value I distribution theory. We explored the genetic mechanism of flood disasters and some measures for preventing the flood disaster in PV power station. The results show that: (1) Influenced by southwest jet, the process rainfall of Macheng National Meteorological Station is 433.1 mm, and the “7.1” rainstorm process reaches the extremely heavy rainfall level. (2) Daily precipitation is 333.6 mm at Macheng Station on 1 July 2016, and it ranks the first in the history of maximum daily precipitation over the years, with a recurrence period of 367 years. The cumulative precipitation is 155.2 mm from 19:00 to 22:00 on 30 June 2016, and it ranks the first in the history of maximum 4 h continuous precipitation, with a recurrence period of 51 years. (3) During the “7.1” rainstorm period, the level of Macheng’ critical precipitation index of mountain torrent (debris flow) disaster grade prediction stations in five regions of Hubei Province is R3, which is very prone to mountain torrent geological disasters. Large-scale heavy rainfall led to a rise abruptly of the water level of rivers in Macheng in a short time, and the limited water level of reservoir in flood period was exceeded. In addition, the water conservancy and flood control facilities are inadequate. That caused severe floods disasters and a PV Power Station was flooded with huge economic losses.