Where to install the lightning rod?

With the lightning rod ( Here refers to only single needle) Scope of protection of the calculation method of main line and ball method, therefore, is broken line method and the calculation of rolling ball method has carried on the preliminary analysis and discussion, it is concluded that: the main characteristics of broken line method is intuitive design, calculation is simple, save

with lightning rod ( Here refers to only single needle) Scope of protection of the calculation method of main line and ball method, therefore, & other; Dogleg method & throughout; And & other Rolling ball method & throughout; Calculation has carried on the preliminary analysis and discussion, it is concluded that: & other; Dogleg method & throughout; The main features of visual design, calculation is simple, save investment, but the building height is more than 20 m above shall not apply; “ Rolling ball method & throughout; The main characteristic is the lightning rod can be calculated ( Belt) The scope of protection when combined with the grid, but relatively complicated calculation, investment cost is relatively large. In the calculation method of lightning rod protection range, & other; Dogleg method & throughout; Is a mature method. In recent years, the national standard of & other; Rolling ball method & throughout; Also beginning of peer recognition, but in practice, & other; Rolling ball method & throughout; Also met some problems, especially in the calculated surface lightning protection range of the day. So it is necessary for power system commonly used & other; Dogleg method & throughout; The gb & other; Rolling ball method & throughout; A comparative analysis, found that there were a problem.

some homes the stainless steel water tank has been placed on the roof of the house, solar water heater, such as metal, most to do ground handling, these metal has become a lightning favored object, there are serious lightning hazards. Most of the houses without direct lightning proof device; Power lines, cable lines, telephone lines and solar water heater, etc. No lightning protection device, these are the important cause of rural lightning accidents. 2. Investigation and analysis of the present situation of the lightning protection. County suburbs directly affiliated schools and schools for the investigation on the current situation in a massive building lightning protection facilities, most of the schools have no lightning protection facilities, especially the rural primary school, there is no any facilities ratio above 95%, the city schools, although there is a lightning protection facilities, but lightning protection facilities are not perfect, there is a problem many, in recent years, most of the school teachers and students of the lightning protection consciousness is improving year by year, but suffer from lack of funding, although some buildings has direct lightning protection device, but lightning protection device for lodging, fracture, corrosion, sealing off phenomenon is widespread.

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