热电厂雷电灾害风险评估
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摘要
雷电灾害风险评估是防雷设计之前最重要的环节。从风险理论入手,简单介绍了风险、风险评估、自然灾害风险评估等概念,建立了一个较清晰的风险评估框架体系。针对热电厂的特殊结构,简化风险评估模型,用IEC 62305-2雷电灾害风险评估的评估方法对其进行雷击风险评估。结果显示,雷击风险主要是来自雷击建筑物及其相连线路造成的物理损害所引起的,需要在入户的架空电缆等设施上安装浪涌保护器,使热电厂达到高效防雷的目的。
The risk evaluation work of lightning is the most important procedure of the lightning prevention work. Starting from the risk theory, the concept of risk, risk evaluation and risk evaluation for natural disasters were introduced. A specific framework for risk evaluation was established. Then aiming at the special structure of thermal power plant, the evaluation model was simplified and the evaluation work using the method in IEC 62305-2 risk evaluation for lightning disaster were done. The results showed that the lightning risk is mainly attributed to the physical damage in the main building and the circuit caused by lightning. Thus we should install surge protection device on aerial cable connecting to indoor space, to achieve the purpose of efficient lightning prevention work for thermal power plant.
The risk evaluation work of lightning is the most important procedure of the lightning prevention work. Starting from the risk theory, the concept of risk, risk evaluation and risk evaluation for natural disasters were introduced. A specific framework for risk evaluation was established. Then aiming at the special structure of thermal power plant, the evaluation model was simplified and the evaluation work using the method in IEC 62305-2 risk evaluation for lightning disaster were done. The results showed that the lightning risk is mainly attributed to the physical damage in the main building and the circuit caused by lightning. Thus we should install surge protection device on aerial cable connecting to indoor space, to achieve the purpose of efficient lightning prevention work for thermal power plant.
引文
[1]马民书.风险论[M].北京:军事科学出版社,2000.
[2]黄崇福.自然灾害风险分析[M].北京:北京师范大学出版社,2000.
[3]NEWMAKE N M.Promblems in wave propaga-tion in soil and rock[C]∥Proc.of International System on Wave Propagation and Dynamic Prop-erties of Each Materials.New Mexico,1967:69-80.
[4]PETAK W J,ATKISSON A A.自然灾害风险评价与减灾政策[M].向立云,程晓陶,译.北京:地震出版社,1993.
[5]黄崇福.自然灾害风险评价理论与实践[M].北京:科学出版社,2005.
[6]CYBENKO F G.Approximation by superposi-tions of a sigmoidalfunction[J].Mathematics of Control,Signals and Systems,1989,2(4):303-314.
[7]IEC62305-2Protection against lightning—Part 2:Risk management[S].
[2]黄崇福.自然灾害风险分析[M].北京:北京师范大学出版社,2000.
[3]NEWMAKE N M.Promblems in wave propaga-tion in soil and rock[C]∥Proc.of International System on Wave Propagation and Dynamic Prop-erties of Each Materials.New Mexico,1967:69-80.
[4]PETAK W J,ATKISSON A A.自然灾害风险评价与减灾政策[M].向立云,程晓陶,译.北京:地震出版社,1993.
[5]黄崇福.自然灾害风险评价理论与实践[M].北京:科学出版社,2005.
[6]CYBENKO F G.Approximation by superposi-tions of a sigmoidalfunction[J].Mathematics of Control,Signals and Systems,1989,2(4):303-314.
[7]IEC62305-2Protection against lightning—Part 2:Risk management[S].
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