气象灾害对江苏电网的影响及防御分析.doc

气象灾害对江苏电网的影响及防御分析 路永玲，陶风波，周志成，刘洋，高嵩 （江苏省电力公司电力科学研究院，江苏南京211103） 摘要: 随着全球气候特征的明显变化及江苏工业经济的高速发展，江苏电网设备因气象灾害所引发的故障呈现逐年递增的态势，污闪、风偏等故障次数明显增多。本文在广泛调研收资的基础上对江苏地区典型气象条件的时空分布、气象灾害形成原因进行统计分析，得出大风、雷暴、雾霾、覆冰天气条件下电网设备的故障特征、明确了故障时的主要气象要素及影响规律；同时结合江苏电网运行经验和目前防御措施，提出加强电网设备抗灾设计、采用防灾新技术、建立电网灾害监测及预警系统的总体防御思路，可为具有类似气象灾害的电网设计、运行及事故预防提供重要参考。 关键词: 气象灾害，电网设备，故障防御，气象预警，在线监测 Analysis of Meteorological Disasters Influence on Jiangsu Power Grid Equipments and Prevention Lu Yong-ling, Tao Feng-bo, Zhou Zhi-cheng ,Liu Yang, Gao Song (Electric Power Researeh Institute, Jiangsu Province Electric Power Company, Nanjing Jiangsu 211103) Abstract：With the obvious change of global climate characteristics and rapid development of industrial economy, the number of faults on grid equipments in Jiangsu Power Grid caused by meteorological disasters is showing an increasing trend year by year,especially the contamination flashover faults and wind deflection faults. On the basis of extensive investigation and research, this paper presents the fault characteristics of grid equipments under wind, thunderstorm,haze and ice. And furthermore it pinpoints main meteorological elements and the influence law.Combining recent operating experience and current prevention measures, this paper also gives the overall defense advice of meteorological disasters on aspects of designing and planning, usage of new technology and disaster warning, etc. The results above can provide important reference for the designing, maintaining and accident prevention of the grids with similar meteorological disasters. Keyword：meteorological disasters; grid equipments; fault prevention; meteorological warning; on-line monitoring; 1概述 随着经济社会发展，输电线路的覆盖面不断扩大，、雷电等灾害性天气对的侵扰随之增大 本文对江苏电网近年来发生的气象灾害案例、电网设备故障特征、采取的防御措施及主要气象要素进行了广泛调研；并通过与气象、环保等部门的合作，将全省气象观测站、雷电定位系统、环境监测站等监测数据同电网经验数据相融合，对各类气象灾害对江苏电网的影响及防御进行分析研究。 2主要气象灾害及防御现状 2.1 风灾 2.1.1江苏电网设备受风灾的影响 基于气象观测数据和数学统计得出江苏各月均可出现大风，一年中春季的3、4月份和夏季的7、8月份大风日数较多；区域性大风平均每年有22.4天，最多的一年是1965年，78天，最少的是1995年和1999年，仅6天，连