To better improve the electrical safety of buildings and fulfill the role of lightning protection and grounding,this article combines cases and discusses seven aspects of lightning protection devices’construction tec...To better improve the electrical safety of buildings and fulfill the role of lightning protection and grounding,this article combines cases and discusses seven aspects of lightning protection devices’construction technology.These aspects include the lightning protection classification of buildings,air terminals,down conductors,grounding devices,division of lightning protection zones,and lightning electromagnetic pulse shielding.Through the introduction of this article,readers can gain a comprehensive understanding of the application and value of lightning protection grounding construction technology in building electrical installation projects.展开更多
The role played by equipotential connection in lightning protection was summarized in terms of lightning protection,static electricity,electromagnetic shielding,protection from electric shocks,and earth fault protecti...The role played by equipotential connection in lightning protection was summarized in terms of lightning protection,static electricity,electromagnetic shielding,protection from electric shocks,and earth fault protection.In addition,drawbacks of independent grounding and common grounding were concluded.According to standards and researches,such as Building Lightning Protection Design Standard （GB50057-2010）,further demands and rules of equipotential connection in lightning protection engineering were proposed,providing references for lightning prevention design,construction and examination by related scientific workers and staffs.展开更多
With the change of the environment, the frequency of meteorological disasters increases. Therefore, people need to understand the detection methods and measures of lightning protection in order to effectively reduce t...With the change of the environment, the frequency of meteorological disasters increases. Therefore, people need to understand the detection methods and measures of lightning protection in order to effectively reduce the harm. Based on the development of China's meteorological lightning protection work, this paper briefly introduces the problems exposed therein, and puts forward targeted solutions, in order to effectively improve the lightning protection effect, speed up the promotion of relevant lightning protection technologies and create a safe and stable living environment.展开更多
DCS （distributed control system） plays a decisive role in the overall operation of a nuclear power plant. If DCS fails, it will seriously affect the normal production of nuclear power plant, causing great losses. So...DCS （distributed control system） plays a decisive role in the overall operation of a nuclear power plant. If DCS fails, it will seriously affect the normal production of nuclear power plant, causing great losses. So it is very important to take perfect lightning protection measures on DCS of the nuclear power plant. In this paper, according to the actual situation of DCS in a nuclear power plant, by controlling lightning point, securely booting lightning into the ground network, improving low-resistance ground network, eliminating ground loops, determining the safety space, surge protection of power and signal, a set of complete lightning protection design scheme was systematically put forward. Some specific lightning protection measures were highlighted, such as the DCS grounding, equipotential bonds and shields, and some specific considerations were put forward. All of these could offer reference in the practical application.展开更多
Via database technology, a perfect lightning protection integrated service work platform is established, thereby realizing paperless data management of routine business.
Due to its large and metallic structure, large recreation facility is easy to be struck by lightning. Meanwhile, the lightning strike conse- quences are serious, including threat to the life and property safety of tou...Due to its large and metallic structure, large recreation facility is easy to be struck by lightning. Meanwhile, the lightning strike conse- quences are serious, including threat to the life and property safety of tourists, great impact on society and bad effect on the development of tourism. As a result, lightning protection of recreation facility is particularly important. Taking the Ferris wheel of Zijin Park as an example, its light- ning risk and structural characteristics were analyzed to make reasonable solving scheme. Through the study about lightning risks of recreational fa- cilities with different structures and geographical positions, the lightning protection differences between recreational facilities and the general lightning protection scheme were summarized.展开更多
With the development of the time and the progress of economy,great changes have taken place in the environment.In recent years,it is common to see bad weather,such as hurricane,drought,lightning and so on.The emergenc...With the development of the time and the progress of economy,great changes have taken place in the environment.In recent years,it is common to see bad weather,such as hurricane,drought,lightning and so on.The emergence of these weather has the greatest impact on farmers and crops,especially the lightning weather,not only that,but also sometimes cause personal injury.In face of the frequent occurrence of bad weather in recent years and its harm and threat to China's agriculture,rural areas,personnel,etc.,the author makes a detailed study on the causes of rural lightning weather,analyzes the lightning protection measures in rural areas and their shortcomings,and summarizes the relevant improvement measures.展开更多
This paper is devoted to the study of the most suitable protocols needed to verify the lightning protection and ground resistance quality in a large-scale scientific facility located on a site with high risk of lightn...This paper is devoted to the study of the most suitable protocols needed to verify the lightning protection and ground resistance quality in a large-scale scientific facility located on a site with high risk of lightning strikes. We illustrate this work by reviewing a case study: the largest telescopes of the Northern Hemisphere Cherenkov Telescope Array, CTA-N. This array hosts sensitive and high-speed optoelectronics instrumentation and sits on a clear, free from obstacle terrain at around 2400 m above sea level. The site offers a top-quality sky but also features challenging conditions for a lightning protection system: the terrain is volcanic and has electrical resistivities well above 1 kOhm·m. In addition, the environment often exhibits humidities well below 5%, and strong winds pose challenging conditions. On the other hand, the </span><span style="font-family:Verdana;">high complexity of a Cherenkov telescope structure does not allow a straightforward</span><span style="font-family:Verdana;"> application of lightning protection standards. We describe here how the risk assessment of direct strike impacts was made and how contact voltages and ground system were both tested. Finite Element Simulation (COMSOL Multiphysics) has been used to estimate the current flowing through the parts of the earthing system designed for the telescopes in the case of a direct strike impact. This work is intended to provide assistance to scientists and managers involved in the construction of scientific installations, particularly those in charge of defining verifiable reliability and safety requirements for lightning protection.展开更多
Regional lightning protection is a complete theoretical system,mainly including:lightning interception technology(LIPT),lightning strong electromagnetic pulse high-energy absorption technology(MSPD),and regional light...Regional lightning protection is a complete theoretical system,mainly including:lightning interception technology(LIPT),lightning strong electromagnetic pulse high-energy absorption technology(MSPD),and regional lightning activity law analysis technology(RLLA).Lightning interception technology uses dispersive waveguide resonant cavity technology to achieve the functions of 46.55 m longer than upward leader of ordinary lightning rod,significantly reducing lightning strike point current by 40%,optimizing space electromagnetic field environment,and effectively intercepting overhead and side lightning strikes,and overcome the limitations of traditional lightning rod.The lightning strong electromagnetic pulse high-energy absorption technology uses distributed parameter balance technology,special disconnector for short circuit current,and parity pairing technology to achieve stronger surge absorption capacity than traditional single pulse SPD and international advanced technical indicators such as timely breaking under power frequency short circuit current,and good energy and time coordination.The analysis technology of regional lightning activity laws accurately identifies lightning strike points through comprehensive analysis of regional lightning activity laws,physical parameters of ion clouds,and the impact on ground electric fields.The three core technology systems complement each other,achieving all-round protection against direct lightning strike and lightning electromagnetic pulse.Several projects achieved zero lightning damage,effectively ensuring the safety of buildings and electronic and electrical equipment in the protected area.展开更多
The lightning protection design of "Feilongzaitian" roller coaster of Fangte in Zigong was discussed, and the lightning protection measures of "Feilongzaitian" roller coaster were analyzed from the...The lightning protection design of "Feilongzaitian" roller coaster of Fangte in Zigong was discussed, and the lightning protection measures of "Feilongzaitian" roller coaster were analyzed from the aspects of direct lightning protection, grounding and lightning electromagnetic impulse protection.展开更多
An electronic information system is composed of multiple groups of components. With the improvement of technology, its accuracy is getting higher and higher. The voltage during normal operation is only a few volts, an...An electronic information system is composed of multiple groups of components. With the improvement of technology, its accuracy is getting higher and higher. The voltage during normal operation is only a few volts, and the information current is only microamp, so the withstand voltage to lightning electromagnetic pulse is extremely low. In this paper, the negative impact of lightning and static electricity on the computer room of an electronic information system was analyzed firstly, and then the design for the lightning protection of the computer room was discussed.展开更多
With the development of society and the continuous advancement of urbanization, the number of buildings is gradually increasing, the scale is gradually expanding, and the function is gradually expanding, which makes t...With the development of society and the continuous advancement of urbanization, the number of buildings is gradually increasing, the scale is gradually expanding, and the function is gradually expanding, which makes the lightning protection and grounding operation in electrical installation more and more important. This paper expounds the grounding system of electrical equipment in intelligent building, including working grounding, lightning protection grounding, low-voltage distribution system grounding, safety grounding, anti-static grounding and shielding grounding, so as to optimize the design and reasonable grounding of intelligent building.展开更多
Our country's building by varying degrees of damage, especially lightning disasters. The damage to our country's buildings is the worst. Lightning disaster is one of the most serious disasters in China. In the...Our country's building by varying degrees of damage, especially lightning disasters. The damage to our country's buildings is the worst. Lightning disaster is one of the most serious disasters in China. In the process of production, it will seriously damage people's interests and life safety. In view of this situation, we must take the corresponding measures to prevent the lightning disaster to the building damage, so as to protect the interests and life safety of the people. In this article, this paper mainly expounds the detection work of preventing lightning disaster. The problems that often occur in the lightning protection detection of new buildings are found and studied, and the corresponding solutions are put forward to deal with lightning disaster. At the same time, avoid these problems.展开更多
Lightning is a natural phenomenon with extremely high occurrence probability. This kind of natural phenomenon not only comes quickly, but also has extremely strong destructive power. It can form strong physical effect...Lightning is a natural phenomenon with extremely high occurrence probability. This kind of natural phenomenon not only comes quickly, but also has extremely strong destructive power. It can form strong physical effects such as shock wave and electromagnetic radiation in a short time, and affect buildings, electronic instruments and equipment. It is called one of the ten major natural disasters. During the operation of railway traction power supply catenary system, accidents such as equipment damage and train interruption caused by lightning strike often occur. Lightning protection technology can effectively protect the catenary system from insulator damage and line trip caused by lightning strikes. Through the research on lightning protection technology of OCS, the lightning protection countermeasures are explored to improve the reliability of line operation and ensure the safe operation of OCS equipment.展开更多
In order to improve the quality of power supply and ensure the safe operation of the substation, the important role of lightning protection and grounding design of the substation is pointed out, and the causes of ligh...In order to improve the quality of power supply and ensure the safe operation of the substation, the important role of lightning protection and grounding design of the substation is pointed out, and the causes of lightning disaster of the substation are analyzed, i.e. lightning is introduced into the power line, lightning is introduced into the communication line and network line, the grounding is not standardized and the structure of the ground grid is problematic. The effective measures for lightning protection and grounding of substations are put forward, such as shielding lightning current accurately, installing lightning protection lightning receptor and lightning arrester of substations, and reasonably arranging lightning protection devices.展开更多
The advancement of wind power technology and the increase in demand for electric energy have made the construction of wind farms larger and larger. However, many safety issues have also been exposed during production ...The advancement of wind power technology and the increase in demand for electric energy have made the construction of wind farms larger and larger. However, many safety issues have also been exposed during production and operation and maintenance. Overhead transmission lines in the wind farm area are exposed to the natural environment for a long time, which can easily cause lightning strikes to the ground wire and self-supporting angle steel towers. This paper analyzes and studies three common lightning protection technology principles and corresponding specific measures for overhead transmission lines. For a wind farm in Shandong Province, through collecting field data, theoretical calculations and other methods. Finally, a scheme for reducing grounding resistance and optimizing lightning protection design is proposed to ensure the safe operation of transmission line projects in the wind farm and the stability of the power grid.展开更多
In the transmission system, the medium wave broadcasting transmission plays a very important role. The performance of the transmission antenna directly affects whether the transmission system can work normally. Based ...In the transmission system, the medium wave broadcasting transmission plays a very important role. The performance of the transmission antenna directly affects whether the transmission system can work normally. Based on this, it is necessary to strengthen the exploration of medium wave broadcasting transmission in the future work process, clarify its working principle, and strengthen the daily maintenance of medium wave broadcasting transmission. At present, the key parameters considered in the MW broadcast antenna include high elevation radiation, antenna efficiency, etc. This paper studies and analyzes the lightning protection measures of the medium wave broadcasting station for reference.展开更多
Nowadays, the country's economic strength and science and technology has been greatly improved, promoting the growth of various industries. For the weather monitoring station, it not only realizes the automatic de...Nowadays, the country's economic strength and science and technology has been greatly improved, promoting the growth of various industries. For the weather monitoring station, it not only realizes the automatic detection, but also makes the weather monitoring station have a larger space for growth. At the same time, the staff of the weather monitoring station needs to focus on how to reduce the lightning strike rate and then make the correctness of the weather monitoring improve. In view of this, this paper mainly discusses the disadvantages of lightning protection in meteorological monitoring field and the corresponding treatment strategies for reference only.展开更多
With the rapid development of science and technology, radio and television are becoming more and more popular. In addition, the continuous improvement of people's spiritual and cultural enthusiasm puts forward hig...With the rapid development of science and technology, radio and television are becoming more and more popular. In addition, the continuous improvement of people's spiritual and cultural enthusiasm puts forward higher requirements for radio and television. In order to ensure signal coverage, most radio and television stations choose high mountains. There are some problems and shortcomings when starting the mountain station. The integrity, integrity and reliability of radio station facilities and equipment depend on the security of transmissions and broadcasts. In order to ensure the safety and high-quality transmission of broadcast signals, the daily safety management of equipment in the computer room is very important.展开更多
文摘To better improve the electrical safety of buildings and fulfill the role of lightning protection and grounding,this article combines cases and discusses seven aspects of lightning protection devices’construction technology.These aspects include the lightning protection classification of buildings,air terminals,down conductors,grounding devices,division of lightning protection zones,and lightning electromagnetic pulse shielding.Through the introduction of this article,readers can gain a comprehensive understanding of the application and value of lightning protection grounding construction technology in building electrical installation projects.
文摘The role played by equipotential connection in lightning protection was summarized in terms of lightning protection,static electricity,electromagnetic shielding,protection from electric shocks,and earth fault protection.In addition,drawbacks of independent grounding and common grounding were concluded.According to standards and researches,such as Building Lightning Protection Design Standard （GB50057-2010）,further demands and rules of equipotential connection in lightning protection engineering were proposed,providing references for lightning prevention design,construction and examination by related scientific workers and staffs.
文摘With the change of the environment, the frequency of meteorological disasters increases. Therefore, people need to understand the detection methods and measures of lightning protection in order to effectively reduce the harm. Based on the development of China's meteorological lightning protection work, this paper briefly introduces the problems exposed therein, and puts forward targeted solutions, in order to effectively improve the lightning protection effect, speed up the promotion of relevant lightning protection technologies and create a safe and stable living environment.
基金Research Fund for Youth in Jiangsu Provincial Meteorological Bureau,China(Q201007)
文摘DCS （distributed control system） plays a decisive role in the overall operation of a nuclear power plant. If DCS fails, it will seriously affect the normal production of nuclear power plant, causing great losses. So it is very important to take perfect lightning protection measures on DCS of the nuclear power plant. In this paper, according to the actual situation of DCS in a nuclear power plant, by controlling lightning point, securely booting lightning into the ground network, improving low-resistance ground network, eliminating ground loops, determining the safety space, surge protection of power and signal, a set of complete lightning protection design scheme was systematically put forward. Some specific lightning protection measures were highlighted, such as the DCS grounding, equipotential bonds and shields, and some specific considerations were put forward. All of these could offer reference in the practical application.
文摘Via database technology, a perfect lightning protection integrated service work platform is established, thereby realizing paperless data management of routine business.
基金Supported by Science Research Item of Changzhou Meteorological Bureau,China(1305)
文摘Due to its large and metallic structure, large recreation facility is easy to be struck by lightning. Meanwhile, the lightning strike conse- quences are serious, including threat to the life and property safety of tourists, great impact on society and bad effect on the development of tourism. As a result, lightning protection of recreation facility is particularly important. Taking the Ferris wheel of Zijin Park as an example, its light- ning risk and structural characteristics were analyzed to make reasonable solving scheme. Through the study about lightning risks of recreational fa- cilities with different structures and geographical positions, the lightning protection differences between recreational facilities and the general lightning protection scheme were summarized.
文摘With the development of the time and the progress of economy,great changes have taken place in the environment.In recent years,it is common to see bad weather,such as hurricane,drought,lightning and so on.The emergence of these weather has the greatest impact on farmers and crops,especially the lightning weather,not only that,but also sometimes cause personal injury.In face of the frequent occurrence of bad weather in recent years and its harm and threat to China's agriculture,rural areas,personnel,etc.,the author makes a detailed study on the causes of rural lightning weather,analyzes the lightning protection measures in rural areas and their shortcomings,and summarizes the relevant improvement measures.
文摘This paper is devoted to the study of the most suitable protocols needed to verify the lightning protection and ground resistance quality in a large-scale scientific facility located on a site with high risk of lightning strikes. We illustrate this work by reviewing a case study: the largest telescopes of the Northern Hemisphere Cherenkov Telescope Array, CTA-N. This array hosts sensitive and high-speed optoelectronics instrumentation and sits on a clear, free from obstacle terrain at around 2400 m above sea level. The site offers a top-quality sky but also features challenging conditions for a lightning protection system: the terrain is volcanic and has electrical resistivities well above 1 kOhm·m. In addition, the environment often exhibits humidities well below 5%, and strong winds pose challenging conditions. On the other hand, the </span><span style="font-family:Verdana;">high complexity of a Cherenkov telescope structure does not allow a straightforward</span><span style="font-family:Verdana;"> application of lightning protection standards. We describe here how the risk assessment of direct strike impacts was made and how contact voltages and ground system were both tested. Finite Element Simulation (COMSOL Multiphysics) has been used to estimate the current flowing through the parts of the earthing system designed for the telescopes in the case of a direct strike impact. This work is intended to provide assistance to scientists and managers involved in the construction of scientific installations, particularly those in charge of defining verifiable reliability and safety requirements for lightning protection.
基金Supported by Lightning Multi-pulse Intelligent Monitoring System Optimization Technology Project of Guangdong Yuedian Dianbai Hot Water Wind Farm(SFC/DBW-Z-FW-23-006).
文摘Regional lightning protection is a complete theoretical system,mainly including:lightning interception technology(LIPT),lightning strong electromagnetic pulse high-energy absorption technology(MSPD),and regional lightning activity law analysis technology(RLLA).Lightning interception technology uses dispersive waveguide resonant cavity technology to achieve the functions of 46.55 m longer than upward leader of ordinary lightning rod,significantly reducing lightning strike point current by 40%,optimizing space electromagnetic field environment,and effectively intercepting overhead and side lightning strikes,and overcome the limitations of traditional lightning rod.The lightning strong electromagnetic pulse high-energy absorption technology uses distributed parameter balance technology,special disconnector for short circuit current,and parity pairing technology to achieve stronger surge absorption capacity than traditional single pulse SPD and international advanced technical indicators such as timely breaking under power frequency short circuit current,and good energy and time coordination.The analysis technology of regional lightning activity laws accurately identifies lightning strike points through comprehensive analysis of regional lightning activity laws,physical parameters of ion clouds,and the impact on ground electric fields.The three core technology systems complement each other,achieving all-round protection against direct lightning strike and lightning electromagnetic pulse.Several projects achieved zero lightning damage,effectively ensuring the safety of buildings and electronic and electrical equipment in the protected area.
文摘The lightning protection design of "Feilongzaitian" roller coaster of Fangte in Zigong was discussed, and the lightning protection measures of "Feilongzaitian" roller coaster were analyzed from the aspects of direct lightning protection, grounding and lightning electromagnetic impulse protection.
文摘An electronic information system is composed of multiple groups of components. With the improvement of technology, its accuracy is getting higher and higher. The voltage during normal operation is only a few volts, and the information current is only microamp, so the withstand voltage to lightning electromagnetic pulse is extremely low. In this paper, the negative impact of lightning and static electricity on the computer room of an electronic information system was analyzed firstly, and then the design for the lightning protection of the computer room was discussed.
文摘With the development of society and the continuous advancement of urbanization, the number of buildings is gradually increasing, the scale is gradually expanding, and the function is gradually expanding, which makes the lightning protection and grounding operation in electrical installation more and more important. This paper expounds the grounding system of electrical equipment in intelligent building, including working grounding, lightning protection grounding, low-voltage distribution system grounding, safety grounding, anti-static grounding and shielding grounding, so as to optimize the design and reasonable grounding of intelligent building.
文摘Our country's building by varying degrees of damage, especially lightning disasters. The damage to our country's buildings is the worst. Lightning disaster is one of the most serious disasters in China. In the process of production, it will seriously damage people's interests and life safety. In view of this situation, we must take the corresponding measures to prevent the lightning disaster to the building damage, so as to protect the interests and life safety of the people. In this article, this paper mainly expounds the detection work of preventing lightning disaster. The problems that often occur in the lightning protection detection of new buildings are found and studied, and the corresponding solutions are put forward to deal with lightning disaster. At the same time, avoid these problems.
文摘Lightning is a natural phenomenon with extremely high occurrence probability. This kind of natural phenomenon not only comes quickly, but also has extremely strong destructive power. It can form strong physical effects such as shock wave and electromagnetic radiation in a short time, and affect buildings, electronic instruments and equipment. It is called one of the ten major natural disasters. During the operation of railway traction power supply catenary system, accidents such as equipment damage and train interruption caused by lightning strike often occur. Lightning protection technology can effectively protect the catenary system from insulator damage and line trip caused by lightning strikes. Through the research on lightning protection technology of OCS, the lightning protection countermeasures are explored to improve the reliability of line operation and ensure the safe operation of OCS equipment.
文摘In order to improve the quality of power supply and ensure the safe operation of the substation, the important role of lightning protection and grounding design of the substation is pointed out, and the causes of lightning disaster of the substation are analyzed, i.e. lightning is introduced into the power line, lightning is introduced into the communication line and network line, the grounding is not standardized and the structure of the ground grid is problematic. The effective measures for lightning protection and grounding of substations are put forward, such as shielding lightning current accurately, installing lightning protection lightning receptor and lightning arrester of substations, and reasonably arranging lightning protection devices.
文摘The advancement of wind power technology and the increase in demand for electric energy have made the construction of wind farms larger and larger. However, many safety issues have also been exposed during production and operation and maintenance. Overhead transmission lines in the wind farm area are exposed to the natural environment for a long time, which can easily cause lightning strikes to the ground wire and self-supporting angle steel towers. This paper analyzes and studies three common lightning protection technology principles and corresponding specific measures for overhead transmission lines. For a wind farm in Shandong Province, through collecting field data, theoretical calculations and other methods. Finally, a scheme for reducing grounding resistance and optimizing lightning protection design is proposed to ensure the safe operation of transmission line projects in the wind farm and the stability of the power grid.
文摘In the transmission system, the medium wave broadcasting transmission plays a very important role. The performance of the transmission antenna directly affects whether the transmission system can work normally. Based on this, it is necessary to strengthen the exploration of medium wave broadcasting transmission in the future work process, clarify its working principle, and strengthen the daily maintenance of medium wave broadcasting transmission. At present, the key parameters considered in the MW broadcast antenna include high elevation radiation, antenna efficiency, etc. This paper studies and analyzes the lightning protection measures of the medium wave broadcasting station for reference.
文摘Nowadays, the country's economic strength and science and technology has been greatly improved, promoting the growth of various industries. For the weather monitoring station, it not only realizes the automatic detection, but also makes the weather monitoring station have a larger space for growth. At the same time, the staff of the weather monitoring station needs to focus on how to reduce the lightning strike rate and then make the correctness of the weather monitoring improve. In view of this, this paper mainly discusses the disadvantages of lightning protection in meteorological monitoring field and the corresponding treatment strategies for reference only.
文摘With the rapid development of science and technology, radio and television are becoming more and more popular. In addition, the continuous improvement of people's spiritual and cultural enthusiasm puts forward higher requirements for radio and television. In order to ensure signal coverage, most radio and television stations choose high mountains. There are some problems and shortcomings when starting the mountain station. The integrity, integrity and reliability of radio station facilities and equipment depend on the security of transmissions and broadcasts. In order to ensure the safety and high-quality transmission of broadcast signals, the daily safety management of equipment in the computer room is very important.
