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The cause of the automatic weather stations suffer lightning and the lightning protection measures

Time:03-25

Along with our country the development of science and technology, the automatic meteorological station in meteorological service is more and more widely used, the number and running time is also increasing, however, in the process of equipment operation, gradually exposed some problems, such as the field of lightning protection measures does not reach the designated position, in order to deal with this problem, we according to the different situation, puts forward the effective measures of the lightning protection,
A, the cause of the weather station lightning strike
1, the direct lightning
Automatic meteorological station need installed in open field for a long time, the thunderstorm weather lightning can directly effect on automatic meteorological station equipment and buildings, the damage is opposite bigger, to produce high voltage in the larger time even a spark, therefore, the damage from the lightning strike for automatic meteorological station is devastating,
2, thunder and lightning electromagnetic induction
After a lightning strike, the environment will produce a certain power, and can produce strong magnetic field in an instant, the emergence of the magnetic field will interfere with the automatic meteorological station related equipment connected, which destroys the automatic meteorological equipment, due to lightning electromagnetic induction to generate a strong electric energy along the wire to the ends of the conductor, causing damage to the device of automatic meteorological station,
3, thunder electric wave invasion
In the process of lightning activity can produce powerful wave voltage and current, although not directly to the automatic meteorological station lightning devices, but it can be connected by wires signal lines as a conductor is directly effect on meteorological equipment, such as damage to equipment,
4, back ground potential
If the automatic meteorological station related meteorological equipment is not in accordance with the relevant provisions of the operation, such as network equipment do not conform to the rules, directly leads to contact resistance is too big, once appear, lightning, cannot to powerful current rapidly released in a timely manner to the earth, it causes the damage of equipment,
Two, weather stations to avoid lightning measures

1, install the lightning protection facilitiesLightning strike, the equipment to ensure the automatic meteorological station grounding device Settings, to take some to avoid lightning damage to equipment, such as installation of lightning rod, wire, lightning protection network, lightning protection belt, of course, also can be ground down lead to ground gathering line and earthing body, effectively prevent lightning induction, which requires combining with many elements now automatic meteorological station location, as well as the local natural conditions such as choosing scientific and reasonable lightning protection measures, to combine the local wind lever, along with access to the net amount of rain etc equipment, make sure two types of grounding system and the safe distance between ground wire, once you reach a safe distance, you need to decorate insulation facilities,
2, to the power system of lightning protection measures
Due to lightning in the process of energy released is opposite bigger, therefore, can will produce very big pressure within 2 km damage to the circuit devices, as a result, multi-factor automatic meteorological station related equipment in the process of installation, be sure to the protected area of cable, metal pipeline and cable and other related installation of lightning protection device, and the equipotential connection,
3, the installation of lightning rod
To reduce the number of direct lightning damage, weather stations usually by lightning rod, lightning protection network such facilities to the introduction of the current underground, the most common is the lightning rod, due to the special shape of the lightning rod, at the tip of the lightning rod will gather a lot of charge, when lightning formation, charged clouds and the lightning rod to form a very small capacitance between the tip of the capacitor, when charge when they are unable to accommodate the lightning rod and charged through the clouds, and then together to form a conductor, introduces current underground, again through the earthing device to eliminate lightning strike damage,
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