Building Lightning Protection Engineering Solutions
I.The impact of lightning on buildings
The impact of lightning on buildings is mainly manifested in the direct lightning and induction mine aspects:
1.direct lightning:direct lightning will directly cause damage to the building structure,such as piercing the roof,damage to the wall.
2.Induction lightning invasion:lightning accompanied by strong magnetic field changes,so that the formation of induced currents in the circuit,resulting in increased potential.Overvoltage and overcurrent easily cause damage to electrical equipment and information systems.
II.The building lightning solutions
For the impact of lightning on buildings,we propose the following lightning protection solutions:
1.External lightning protection facilities:
(1)the installation of HD-PLR plasma lightning repellent:HD-PLR to take the international leading theory of lightning protection,the use of arrays of multi-needle"like the tip of the effect",so that the protection of the target is in the electric field strength is relatively low(i.e.,safe)in the electric field,at the same time,the formation of thunderclouds of anisotropic charge strong and effective neutralisation,and in time to destroy the lightning precursor,eliminate the key areas of protection of lightning,the lightning protection of the building.Eliminate the lightning phenomenon within the scope of key protection,to ensure the safety of equipment and personnel.
(2)the top of the building to install lightning catcher(lightning rod):lightning rod and lightning belt is an effective means of preventing direct lightning.Installation of lightning rods on the roof can introduce lightning into the ground to avoid direct strikes on people or buildings.
(3)Installation of lightning protection net outside the building:installing lightning protection net around the building can effectively intercept lightning and reduce the risk of direct lightning strikes on the building,and can also be used as a lightning catcher consisting of a mixture of flashing nets,flashing belts and flashing rods.The flashover net and the flashover tape should form a grid of not more than 20m×20m or 24m×16m on the whole roof.When the height of the building exceeds 60m,the first should be laid along the perimeter of the roof to catch the flash belt,the flash belt should be located on the outer surface of the external wall or the vertical surface of the eaves edge.Flashover should be connected to each other.
2.Internal lightning protection measures:
(1)equipotential connection:ensure that electrical equipment and metal components in the building to form an equipotential body,in order to reduce the impact of the potential difference generated by lightning induction on the equipment.The equipotential connection should include the metal casing of electrical equipment,cable shielding and other parts.
(2)Shielding measures:shielding of electrical equipment and information systems in buildings can effectively reduce the impact of lightning electromagnetic radiation on equipment.Shielding measures should include the metal casing of the equipment,cable shielding layer and the shielding of the signal lines.
(3)Surge protection devices:install surge protection devices(lightning arrester),discharge gaps and other over-voltage protection equipment in the building to limit the damage of lightning over-voltage on electrical equipment.The selection of over-voltage protection equipment should be matched according to the rated voltage,current and other parameters of the equipment.
(4)Lightning Monitoring and Early Warning:Use HD-LDL lightning online monitoring management system to achieve the function of empirical data collection and risk warning through data intelligent monitoring and collection.It can not only reduce the time and cost of accident investigation,but also accurately locate and set up additional protective measures based on the data,as well as give the cause of the problematic issues in real time and carry out targeted transformation.
3.Grounding measures:
Flexible grounding technology uses a new grounding network forming method to provide a low resistivity and stable grounding environment for buildings.The technology strengthens the ability of the grounding network to store electric charge,and greatly improves the level of shock resistance of the grounding network.The"HD-R10 flexible grounding electrode"used in the technology is a nano-sized non-metallic conductive material,made on-site,with a resistance reduction factor of up to 0.16.After moulding,it does not dissolve in water and does not contain heavy metals.Contains anti-corrosion factor,can extend the service life of galvanised flat steel six times.
III.Maintenance and management of lightning protection and grounding measures
To ensure the effectiveness of lightning protection measures,the following work should be carried out regularly:
1.Regular inspection and maintenance:Regular inspection and maintenance of external lightning protection facilities such as HD-PLR plasma lightning repellent,grounding system and lightning protection network to ensure that they are in good working condition.Meanwhile,the electrical equipment and information system in the building are regularly inspected and maintained to ensure their normal operation.
2.Lightning data analysis:collect and analyse lightning data to understand the law and characteristics of lightning activities and provide scientific basis for lightning protection.Through the analysis of lightning data,potential lightning risks can be found in time and corresponding protective measures can be taken.
3.Emergency plan formulation:formulate a perfect lightning emergency plan,clarify the emergency handling process and responsible persons,and improve the ability to deal with emergencies.The plan should include personnel evacuation,equipment shutdown,troubleshooting and other aspects.
4.Training and publicity:Strengthen the training and publicity of lightning protection knowledge,and improve the staff's understanding of and attention to lightning protection work.Through training and publicity,it can enhance employees'awareness of lightning protection and improve their ability to deal with lightning incidents.
IV.Conclusion
In summary,building lightning protection engineering solutions involve many aspects such as external lightning protection grounding and internal lightning protection measures.In order to ensure the safe and stable operation of buildings,various factors should be considered comprehensively and scientific and effective lightning protection measures should be taken.At the same time,strengthen the training and publicity of lightning protection knowledge,improve the staff's understanding of lightning protection work and attention,and jointly maintain the safety and stability of the building.
Want to get more related information,welcome to call the hotline!
Recommended lightning protection products:
HD-PLR Plasma Lightning Repellent:no power supply+no need to lead to ground+40 years of effective service life
HD-R10 Flexible Grounding Electrode:excellent resistance effect+anti-corrosion environmental protection and safety+applicable to a variety of terrain
Surge Protection Device:low output residual voltage+long service life+high safety performance
HD-LDL Lightning Online Monitoring System:critical areas to disperse lightning+real-time online monitoring+rapid warning function
I.The impact of lightning on buildings
The impact of lightning on buildings is mainly manifested in the direct lightning and induction mine aspects:
1.direct lightning:direct lightning will directly cause damage to the building structure,such as piercing the roof,damage to the wall.
2.Induction lightning invasion:lightning accompanied by strong magnetic field changes,so that the formation of induced currents in the circuit,resulting in increased potential.Overvoltage and overcurrent easily cause damage to electrical equipment and information systems.
II.The building lightning solutions
For the impact of lightning on buildings,we propose the following lightning protection solutions:
1.External lightning protection facilities:
(1)the installation of HD-PLR plasma lightning repellent:HD-PLR to take the international leading theory of lightning protection,the use of arrays of multi-needle"like the tip of the effect",so that the protection of the target is in the electric field strength is relatively low(i.e.,safe)in the electric field,at the same time,the formation of thunderclouds of anisotropic charge strong and effective neutralisation,and in time to destroy the lightning precursor,eliminate the key areas of protection of lightning,the lightning protection of the building.Eliminate the lightning phenomenon within the scope of key protection,to ensure the safety of equipment and personnel.
(2)the top of the building to install lightning catcher(lightning rod):lightning rod and lightning belt is an effective means of preventing direct lightning.Installation of lightning rods on the roof can introduce lightning into the ground to avoid direct strikes on people or buildings.
(3)Installation of lightning protection net outside the building:installing lightning protection net around the building can effectively intercept lightning and reduce the risk of direct lightning strikes on the building,and can also be used as a lightning catcher consisting of a mixture of flashing nets,flashing belts and flashing rods.The flashover net and the flashover tape should form a grid of not more than 20m×20m or 24m×16m on the whole roof.When the height of the building exceeds 60m,the first should be laid along the perimeter of the roof to catch the flash belt,the flash belt should be located on the outer surface of the external wall or the vertical surface of the eaves edge.Flashover should be connected to each other.
2.Internal lightning protection measures:
(1)equipotential connection:ensure that electrical equipment and metal components in the building to form an equipotential body,in order to reduce the impact of the potential difference generated by lightning induction on the equipment.The equipotential connection should include the metal casing of electrical equipment,cable shielding and other parts.
(2)Shielding measures:shielding of electrical equipment and information systems in buildings can effectively reduce the impact of lightning electromagnetic radiation on equipment.Shielding measures should include the metal casing of the equipment,cable shielding layer and the shielding of the signal lines.
(3)Surge protection devices:install surge protection devices(lightning arrester),discharge gaps and other over-voltage protection equipment in the building to limit the damage of lightning over-voltage on electrical equipment.The selection of over-voltage protection equipment should be matched according to the rated voltage,current and other parameters of the equipment.
(4)Lightning Monitoring and Early Warning:Use HD-LDL lightning online monitoring management system to achieve the function of empirical data collection and risk warning through data intelligent monitoring and collection.It can not only reduce the time and cost of accident investigation,but also accurately locate and set up additional protective measures based on the data,as well as give the cause of the problematic issues in real time and carry out targeted transformation.
3.Grounding measures:
Flexible grounding technology uses a new grounding network forming method to provide a low resistivity and stable grounding environment for buildings.The technology strengthens the ability of the grounding network to store electric charge,and greatly improves the level of shock resistance of the grounding network.The"HD-R10 flexible grounding electrode"used in the technology is a nano-sized non-metallic conductive material,made on-site,with a resistance reduction factor of up to 0.16.After moulding,it does not dissolve in water and does not contain heavy metals.Contains anti-corrosion factor,can extend the service life of galvanised flat steel six times.
III.Maintenance and management of lightning protection and grounding measures
To ensure the effectiveness of lightning protection measures,the following work should be carried out regularly:
1.Regular inspection and maintenance:Regular inspection and maintenance of external lightning protection facilities such as HD-PLR plasma lightning repellent,grounding system and lightning protection network to ensure that they are in good working condition.Meanwhile,the electrical equipment and information system in the building are regularly inspected and maintained to ensure their normal operation.
2.Lightning data analysis:collect and analyse lightning data to understand the law and characteristics of lightning activities and provide scientific basis for lightning protection.Through the analysis of lightning data,potential lightning risks can be found in time and corresponding protective measures can be taken.
3.Emergency plan formulation:formulate a perfect lightning emergency plan,clarify the emergency handling process and responsible persons,and improve the ability to deal with emergencies.The plan should include personnel evacuation,equipment shutdown,troubleshooting and other aspects.
4.Training and publicity:Strengthen the training and publicity of lightning protection knowledge,and improve the staff's understanding of and attention to lightning protection work.Through training and publicity,it can enhance employees'awareness of lightning protection and improve their ability to deal with lightning incidents.
IV.Conclusion
In summary,building lightning protection engineering solutions involve many aspects such as external lightning protection grounding and internal lightning protection measures.In order to ensure the safe and stable operation of buildings,various factors should be considered comprehensively and scientific and effective lightning protection measures should be taken.At the same time,strengthen the training and publicity of lightning protection knowledge,improve the staff's understanding of lightning protection work and attention,and jointly maintain the safety and stability of the building.
Want to get more related information,welcome to call the hotline!
Recommended lightning protection products:
HD-PLR Plasma Lightning Repellent:no power supply+no need to lead to ground+40 years of effective service life
HD-R10 Flexible Grounding Electrode:excellent resistance effect+anti-corrosion environmental protection and safety+applicable to a variety of terrain
Surge Protection Device:low output residual voltage+long service life+high safety performance
HD-LDL Lightning Online Monitoring System:critical areas to disperse lightning+real-time online monitoring+rapid warning function
