山火灾害引发的输电线路跳闸风险实时分析方法及应用

发布时间：2018-05-11 01:15

本文选题：山火灾害 + 同步卫星　；参考：《中国电机工程学报》2017年18期

【摘要】：近年来,山火灾害已成为输电线路跳闸停运的重要原因之一。现有的山火监测方法无法广域实时监测火点和获取线路所处微地形区域的小尺度气象数据,从而难以准确实时地分析山火条件下线路跳闸风险。据此,该文提出一种考虑山火灾害的输电线路跳闸风险实时分析方法。首先,基于同步卫星技术实现了输电线路附近山火的实时监测,其次,提出了多重嵌套的中小尺度气象预报模式以解决气象数值预测精确度与时效性的矛盾,再次,提出了综合考虑降水、植被、风场等各种环境因素的线路跳闸概率实时计算模型,最后,以湖南省历史山火高发期的案例验证了模型的准确性,结果表明,该方法能够实时、准确地分析输电线路山火跳闸风险,为大范围山火灾害下电网的安全运行和应急处置提供重要的数据支撑。
[Abstract]:In recent years, mountain fire disaster has become one of the important reasons of transmission line tripping and outage. The existing mountain fire monitoring methods can not monitor the fire point in a wide area in real time and obtain the small-scale meteorological data of the micro-terrain area where the line is located, so it is difficult to accurately and real-time analyze the line tripping risk under the condition of mountain fire. Therefore, a real-time analysis method for tripping risk of transmission line considering mountain fire disaster is presented in this paper. Firstly, the real-time monitoring of mountain fires near transmission lines is realized based on synchronous satellite technology. Secondly, a multi-nested mesoscale meteorological forecast model is proposed to solve the contradiction between accuracy and timeliness of meteorological numerical prediction. A real-time calculation model of line tripping probability considering all kinds of environmental factors, such as precipitation, vegetation and wind field, is proposed. Finally, the accuracy of the model is verified by a case study of the history mountain fire in Hunan Province. The results show that the method can be used in real time. The risk of mountain fire tripping on transmission line is analyzed accurately, which provides important data support for the safe operation and emergency disposal of power network under the condition of large-scale mountain fire disaster.
【作者单位】：新能源电力系统国家重点实验室(华北电力大学);电网输变电设备防灾减灾国家重点实验室(国网湖南省电力公司防灾减灾中心);
【基金】：国家863高技术基金项目(2015AA050102) 国家自然科学基金项目(513111122) 湖南省电力公司科技项目(5216A01500RJ) 电网输变电设备防灾减灾国家重点实验室开放项目~~
【分类号】：TM752

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