In the process of water conservancy and hydropower engineering construction, the staff should first consider how to optimize the effect of engineering construction, improve the work efficiency and safety through const...In the process of water conservancy and hydropower engineering construction, the staff should first consider how to optimize the effect of engineering construction, improve the work efficiency and safety through construction technology, and then strengthen the implementation of high-efficiency engineering construction combined with construction technology. In this process, the constructors need to give full play to the application advantages of the slope excavation support technology, and coordinate it with other technologies in the construction of water conservancy and hydropower projects, so as to reduce the contradictions in the construction, and thus to maximize the improvement of the working process of the construction of water conservancy and hydropower projects.展开更多
1 Science and technology for environmental protection in China The guiding principles in formulating the ten-year Programme of science and tech-nology for environmental protection are as follows: 1.1 Science and techn...1 Science and technology for environmental protection in China The guiding principles in formulating the ten-year Programme of science and tech-nology for environmental protection are as follows: 1.1 Science and technology should be great to the need economic construction and economic construction must rely on science and technology.展开更多
The characteristics of low pressure plasma produced by a gas discharges lie in thatthe energy of the electrons are much higher than that of the heavy particles in the system. Inthis paperl the low-pressure plasma trea...The characteristics of low pressure plasma produced by a gas discharges lie in thatthe energy of the electrons are much higher than that of the heavy particles in the system. Inthis paperl the low-pressure plasma treatment technology for the environmental contaminantswas synthetically studied, and the reaction processing and mechanism between the low-pressureplasma and the environmental contaminants were theoretically analyzed. At last, the prospectsand existing problems on the application of low-pressure plasma in the field of environmentalprotection were discussed.展开更多
The power industry is an important basic industry of the national economy. Accelerating the rapid development of the power industry and promoting the integration of the power industry with other industries are the imp...The power industry is an important basic industry of the national economy. Accelerating the rapid development of the power industry and promoting the integration of the power industry with other industries are the important contents of the power industry in the new era. In the process of modernization of Chinas power grid, information technology has been continuously improved and developed, and the scale of Chinas power grid is also rapidly growing and expanding. At the same time, our countrys substation is also moving towards the direction of intelligence and development. The application of various intelligent equipment in the field of substation is becoming more and more extensive, which effectively improves and enhances the related work efficiency and safety of power transmission and transformation system. Technical personnel must strengthen the application of information technology and other advanced technologies, comprehensively analyze the shortcomings of relay protection technology in application, and continuously improve the efficiency and reliability of relay protection operation.展开更多
In recent years, with the development of economy, the development of Construction in China has also improved. With the rapid development of social economy and the reduction of urban construction land, it is inevitable...In recent years, with the development of economy, the development of Construction in China has also improved. With the rapid development of social economy and the reduction of urban construction land, it is inevitable that there will be a large number of skyscrapers, and a large number of electronic equipment will be installed during the construction. Because of the intelligent characteristics of the comprehensive building, its utilization rate is much higher than that of the traditional building. Therefore, the construction of electrical engineering and land protection requirements are higher. In order to minimize safety risks and create a good living and working environment for users, construction techniques must be strictly controlled during electronic installation and related installations must be properly managed. In addition, there is a need to protect the earth and improve the electrical safety of electromechanical equipment in high-rise buildings.展开更多
With the continuous advancement of economic globalization, Chinas economic development level has been continuously improved. However, in the whole process, the impact on the natural ecological environment and peoples ...With the continuous advancement of economic globalization, Chinas economic development level has been continuously improved. However, in the whole process, the impact on the natural ecological environment and peoples home on which to live cannot be ignored. In the last century, China was in an important period of economic restructuring and strengthening the countrys strength. Industrial development was used to promote the countrys economic construction. Under the extensive industrial development model, the environmental pollution problem became more and more serious, and various air pollution, soil pollution and water pollution problems emerged one after another. With the transformation of Chinas economic system, a sustainable development strategic plan was put forward. The 14th Five-Year Plan even took "double carbon" as an important goal for Chinas future development. Therefore, it is also necessary to strengthen the exploration of the use of ecological environment monitoring technology and environmental protection technology, master the correct way of using the technology, and lay a solid foundation for Chinas ecological environment protection work.展开更多
At this stage, China's urban construction is advancing rapidly. The process of urbanization has driven the development of urban municipal engineering. China's municipal engineering has been in the stage of sus...At this stage, China's urban construction is advancing rapidly. The process of urbanization has driven the development of urban municipal engineering. China's municipal engineering has been in the stage of sustainable development and optimization, and technical problems have always existed. Therefore, the municipal engineering construction will inevitably have a certain impact and damage on the surrounding environment. If the technology cannot support the engineering construction, it will inevitably lead to the waste of resources, which is contrary to the concept of sustainable development advocated. In view of this situation, this paper aims to explore the municipal engineering construction under the concept of green environmental protection, and improve the utilization rate of resources through scientific and advanced energy-saving and environmental protection technology, so as to reduce the impact on the surrounding environment.展开更多
Comprehensive response to energy conservation, green and environmental protection goals, to promote the implementation of sustainable strategic deployment, has always been the focus of the civil engineering constructi...Comprehensive response to energy conservation, green and environmental protection goals, to promote the implementation of sustainable strategic deployment, has always been the focus of the civil engineering construction field in China to practice the content of the goal. In recent years, under the guidance of the concept of national sustainable development, various industries have attached great importance to the work of energy conservation and environmental protection. Among them, in order to steadily promote the long-term development of the civil engineering construction industry, civil engineering construction field personnel take the initiative to use energy saving and green environmental protection technology content to realize the optimization and transformation of on-site construction operations. In view of this, this paper is mainly based on the current situation of green building construction, and summarizes the application practice of energy-saving green environmental protection technology in civil engineering construction.展开更多
The continuous development of chemical industry has promoted the high-speed promotion of Chinas economy. However, it brings convenience to peoples daily life and also seriously damages the natural environment. Chemica...The continuous development of chemical industry has promoted the high-speed promotion of Chinas economy. However, it brings convenience to peoples daily life and also seriously damages the natural environment. Chemical manufacturing using a large number of chemical materials will produce a large amount of chemical waste in the industrial production process, which has a great impact on environmental protection. Therefore, our country must pay attention to the harm of chemical manufacturing to the environment. Due to the existence of green chemical environmental protection technology, it can reasonably deal with the environmental pollution problems caused by traditional chemical technology, thus effectively improving the environmental protection problems in our country, which is of great significance to the development of our chemical industry. Based on the definition and application direction of green chemical technology, this paper focuses on how to use green chemical technology in practical application and how to improve the effect of green chemical technology, hoping to provide some help for the chemical industry in China to use green environmental protection technology to improve the environment.展开更多
Solar energy as a renewable new energy has begun to penetrate into people's life and work. Solar photovoltaic power generation is in line with the concept of environmental protection and the strategic policy of su...Solar energy as a renewable new energy has begun to penetrate into people's life and work. Solar photovoltaic power generation is in line with the concept of environmental protection and the strategic policy of sustainable development in China. China currently does not have a fully independent lightning protection technology to guarantee solar photovoltaic power generation. Lightning is not uncommon in our daily life, and its harm should not be underestimated. When lightning occurs, it will release a strong current and produce a very high voltage, which will threaten people's life and property. In daily life, we should understand the lightning protection points, in order to minimize the harm of lightning. The building has been repaired and will not change its position on humans. How to protect the building and do a good job of building safety prevention is the starting point and support of building lightning protection device. Solar photovoltaic power stations have been converted to alternating current since their introduction in China, but DC output accounts for a significant proportion of the entire solar power generation process. As an independent power generation system, photovoltaic power station will have a great risk in the event of lightning strike, so lightning protection technology is necessary for solar photovoltaic power generation.展开更多
With the rapid development of the world economy, China has continuously stepped up its reform and opening-up efforts to promote the implementation of the belt and road initiative policy, which has brought great change...With the rapid development of the world economy, China has continuously stepped up its reform and opening-up efforts to promote the implementation of the belt and road initiative policy, which has brought great changes to people's work and life. However, as we all know, Many industries are continuously creating more GDP for the country, but at the same time, they also cause irreversible damage to the ecological environment. Under the background of the new era, the Party and the government need to pay attention to the protection of the ecological environment. At present, the environmental protection work such as ecological inspection in our country is continuously popularized. While adopting advanced environmental protection technology, it is also necessary to ensure the effective implementation of the technology and further promote the sustainable development of the ecological environment.展开更多
If the medium wave broadcasting transmitting station is attacked by lightning, it will not only bring certain influence to the normal broadcasting, but also consume certain manpower, material resources and financial r...If the medium wave broadcasting transmitting station is attacked by lightning, it will not only bring certain influence to the normal broadcasting, but also consume certain manpower, material resources and financial resources to carry out the maintenance, and in the process of maintenance, it is very likely that safety accidents will occur, causing casualties. Therefore, it is necessary to establish an effective lightning protection system for the medium wave radio transmitting station, especially for the positions such as the transmitting power supply, antenna and the antenna dispatching network, so as to ensure that the radio can be broadcast normally in thunderstorm weather.展开更多
With China's rapid economic development and continuous adjustment of industrial structure, the occurrence of plant diseases and insect pests in rural areas is also increasing. Wheat is the main crop planted in our...With China's rapid economic development and continuous adjustment of industrial structure, the occurrence of plant diseases and insect pests in rural areas is also increasing. Wheat is the main crop planted in our province, and its own yield and quality have always been concerned by people. Plant protection technology plays an important role in wheat high-yield cultivation, and can also promote the construction and development of modern agriculture. Therefore, the relevant units should pay more attention to the plant protection technology, have a comprehensive understanding of the specific content and process of the technology, and work out an appropriate technology implementation plan based on the actual situation, so as to improve the effectiveness of the technology operation and further ensure the quality and quantity of wheat production.展开更多
Generally speaking, the MW radio transmitting station will be located at a place with a relatively high altitude, which is relatively empty and has no other special buildings to cover the geographical position. In thi...Generally speaking, the MW radio transmitting station will be located at a place with a relatively high altitude, which is relatively empty and has no other special buildings to cover the geographical position. In this geographical position, although it is said that it is helpful for the signal to spread in a wider range, it will face a great risk of lightning strike if it is affected by thunderstorm weather. Once the medium wave radio transmitting station is struck by lightning, its facilities will not only be harmed, but also directly affect the normal broadcasting of the program, and even more serious will cause serious economic losses. Therefore, it is even more important to improve the lightning protection technology of the MW radio transmitting station. It is even more important to briefly summarize the lightning protection technology of the MW radio transmitting station. In order to deepen the technical level of lightning protection of the medium wave broadcasting transmitting station, a relative basis is given.展开更多
Building intelligent weak current system contains a large number of electronic equipment, which generally has low insulation strength and poor voltage tolerance, and is easy to be damaged in case of lightning weather....Building intelligent weak current system contains a large number of electronic equipment, which generally has low insulation strength and poor voltage tolerance, and is easy to be damaged in case of lightning weather. In order to improve the safety and stability of building intelligent weak current system, this paper analyzes the lightning protection technology of intelligent weak current system.展开更多
In the past,lightning strike risk assessment of buildings mainly referred to the Protection against Lightning—Part 2:Risk Management(IEC 62305-2-2010)based on protection angle method.Lightning strike risk assessment ...In the past,lightning strike risk assessment of buildings mainly referred to the Protection against Lightning—Part 2:Risk Management(IEC 62305-2-2010)based on protection angle method.Lightning strike risk assessment of wind farms was conducted according to the Lightning Protection for Wind Energy System(IEC 61400-24-2019),which proposed the method of lightning strike risk assessment for wind turbine.In fact,the basic idea of the two is the same,that is,the source of the lightning strike wind turbine is transformed from the former S1-S4 to the latter N D-N DJ.According to the above method,wind farm was evaluated,and it has been proved that the practice can not achieve good results.After 2018,China has issued the Guide to Evaluation of Lightning Protection Technology in Buildings(T/GZLY 3-2022)and the Technical Specifications for Lightning Interception in Forest Areas(T/LYCY 4062-2024)based on semicircle protection,in which the source of risk defined by lightning point was closer to the reality,highly targeted and effective.Taking offshore wind farm as an example,this paper introduced a new method of establishing six evaluation indicators to determine the risk level according to the principle of compliance and the new protection technology of semi-circular method,which can be used as a reference for technical personnel.展开更多
Chinese steel industry has made significant progress on reducing fresh water consumption and CO_2/SO_2/COD（ chemical oxygen demand） /dust emissions,and improving comprehensive utilization of solid waste. Some steel ...Chinese steel industry has made significant progress on reducing fresh water consumption and CO_2/SO_2/COD（ chemical oxygen demand） /dust emissions,and improving comprehensive utilization of solid waste. Some steel companies have become topped worldwide. However,due to the large output quantity of crude steel,the whole steel industry is still a huge source of pollutants. At present,environmental protection standards are encountering challenges of lack of technical support,taxation policy and other issues. Steel industry is currently facing enormous environmental pressure. The development trends of environmental protection technologies were studied by summarizing different development stages. To realize the development targets,the industry needs to carry out its research with independent intellectual property rights,develop comprehensive management systems and establish ecological chain with other industries. This can not only raise the level of environmental protection in a broader range,but also improve the energy efficiency of iron and steel plants and increase added value of waste utilization. Finally,23 environmental protection technologies were proposed and 4 new environmental protection practices were studied.展开更多
The increasing use of the Internet with vehicles has made travel more convenient.However,hackers can attack intelligent vehicles through various technical loopholes,resulting in a range of security issues.Due to these...The increasing use of the Internet with vehicles has made travel more convenient.However,hackers can attack intelligent vehicles through various technical loopholes,resulting in a range of security issues.Due to these security issues,the safety protection technology of the in-vehicle system has become a focus of research.Using the advanced autoencoder network and recurrent neural network in deep learning,we investigated the intrusion detection system based on the in-vehicle system.We combined two algorithms to realize the efficient learning of the vehicle’s boundary behavior and the detection of intrusive behavior.In order to verify the accuracy and efficiency of the proposed model,it was evaluated using real vehicle data.The experimental results show that the combination of the two technologies can effectively and accurately identify abnormal boundary behavior.The parameters of the model are self-iteratively updated using the time-based back propagation algorithm.We verified that the model proposed in this study can reach a nearly 96%accurate detection rate.展开更多
In China,there are a lot of high-sulfur gas reservoirs with total proved reserves of over 1 trillion m3,most of which were discovered in the Sichuan Basin.Most high-sulfur gas reservoirs in China,distributed in marine...In China,there are a lot of high-sulfur gas reservoirs with total proved reserves of over 1 trillion m3,most of which were discovered in the Sichuan Basin.Most high-sulfur gas reservoirs in China,distributed in marine carbonate zones,are characterized by great buried depths,complex geologic conditions,high temperatures,high pressures,high H_(2)S and CO_(2) content,presenting various challenges in gas field development engineering and production safety.Since the development of Sinian high-sulfur gas reservoirs in the Weiyuan area of the Sichuan Basin started in the 1960s,Wolonghe,Zhongba and other medium to small-scale gas reservoirs with medium to low sulfur content have been developed.Ever since 2009,successful production of Longgang and Puguang in the Sichuan Basin,together with some other high-sulfur gas reservoirs highlighted the breakthroughs in development technologies for high-sulfur gas reservoirs in China.This paper reviews the progress made in gas reservoir engineering,drilling and completion engineering,gas production,pipeline transportation,corrosion control,natural gas purification,HSE and other aspects with consideration of specific requirements related to safe,clean and high-efficient development of highsulfur gas reservoirs since the“12th Five-Year Plan”period.Finally,considering the challenges in the development of high-sulfur gas reservoirs in China,we summarized the trend in future technological development with the following goals of reducing risks,minimizing environmental damages,and enhancing the efficiency of high-sulfur gas reservoir development.展开更多
文摘In the process of water conservancy and hydropower engineering construction, the staff should first consider how to optimize the effect of engineering construction, improve the work efficiency and safety through construction technology, and then strengthen the implementation of high-efficiency engineering construction combined with construction technology. In this process, the constructors need to give full play to the application advantages of the slope excavation support technology, and coordinate it with other technologies in the construction of water conservancy and hydropower projects, so as to reduce the contradictions in the construction, and thus to maximize the improvement of the working process of the construction of water conservancy and hydropower projects.
文摘1 Science and technology for environmental protection in China The guiding principles in formulating the ten-year Programme of science and tech-nology for environmental protection are as follows: 1.1 Science and technology should be great to the need economic construction and economic construction must rely on science and technology.
文摘The characteristics of low pressure plasma produced by a gas discharges lie in thatthe energy of the electrons are much higher than that of the heavy particles in the system. Inthis paperl the low-pressure plasma treatment technology for the environmental contaminantswas synthetically studied, and the reaction processing and mechanism between the low-pressureplasma and the environmental contaminants were theoretically analyzed. At last, the prospectsand existing problems on the application of low-pressure plasma in the field of environmentalprotection were discussed.
文摘The power industry is an important basic industry of the national economy. Accelerating the rapid development of the power industry and promoting the integration of the power industry with other industries are the important contents of the power industry in the new era. In the process of modernization of Chinas power grid, information technology has been continuously improved and developed, and the scale of Chinas power grid is also rapidly growing and expanding. At the same time, our countrys substation is also moving towards the direction of intelligence and development. The application of various intelligent equipment in the field of substation is becoming more and more extensive, which effectively improves and enhances the related work efficiency and safety of power transmission and transformation system. Technical personnel must strengthen the application of information technology and other advanced technologies, comprehensively analyze the shortcomings of relay protection technology in application, and continuously improve the efficiency and reliability of relay protection operation.
文摘In recent years, with the development of economy, the development of Construction in China has also improved. With the rapid development of social economy and the reduction of urban construction land, it is inevitable that there will be a large number of skyscrapers, and a large number of electronic equipment will be installed during the construction. Because of the intelligent characteristics of the comprehensive building, its utilization rate is much higher than that of the traditional building. Therefore, the construction of electrical engineering and land protection requirements are higher. In order to minimize safety risks and create a good living and working environment for users, construction techniques must be strictly controlled during electronic installation and related installations must be properly managed. In addition, there is a need to protect the earth and improve the electrical safety of electromechanical equipment in high-rise buildings.
文摘With the continuous advancement of economic globalization, Chinas economic development level has been continuously improved. However, in the whole process, the impact on the natural ecological environment and peoples home on which to live cannot be ignored. In the last century, China was in an important period of economic restructuring and strengthening the countrys strength. Industrial development was used to promote the countrys economic construction. Under the extensive industrial development model, the environmental pollution problem became more and more serious, and various air pollution, soil pollution and water pollution problems emerged one after another. With the transformation of Chinas economic system, a sustainable development strategic plan was put forward. The 14th Five-Year Plan even took "double carbon" as an important goal for Chinas future development. Therefore, it is also necessary to strengthen the exploration of the use of ecological environment monitoring technology and environmental protection technology, master the correct way of using the technology, and lay a solid foundation for Chinas ecological environment protection work.
文摘At this stage, China's urban construction is advancing rapidly. The process of urbanization has driven the development of urban municipal engineering. China's municipal engineering has been in the stage of sustainable development and optimization, and technical problems have always existed. Therefore, the municipal engineering construction will inevitably have a certain impact and damage on the surrounding environment. If the technology cannot support the engineering construction, it will inevitably lead to the waste of resources, which is contrary to the concept of sustainable development advocated. In view of this situation, this paper aims to explore the municipal engineering construction under the concept of green environmental protection, and improve the utilization rate of resources through scientific and advanced energy-saving and environmental protection technology, so as to reduce the impact on the surrounding environment.
文摘Comprehensive response to energy conservation, green and environmental protection goals, to promote the implementation of sustainable strategic deployment, has always been the focus of the civil engineering construction field in China to practice the content of the goal. In recent years, under the guidance of the concept of national sustainable development, various industries have attached great importance to the work of energy conservation and environmental protection. Among them, in order to steadily promote the long-term development of the civil engineering construction industry, civil engineering construction field personnel take the initiative to use energy saving and green environmental protection technology content to realize the optimization and transformation of on-site construction operations. In view of this, this paper is mainly based on the current situation of green building construction, and summarizes the application practice of energy-saving green environmental protection technology in civil engineering construction.
文摘The continuous development of chemical industry has promoted the high-speed promotion of Chinas economy. However, it brings convenience to peoples daily life and also seriously damages the natural environment. Chemical manufacturing using a large number of chemical materials will produce a large amount of chemical waste in the industrial production process, which has a great impact on environmental protection. Therefore, our country must pay attention to the harm of chemical manufacturing to the environment. Due to the existence of green chemical environmental protection technology, it can reasonably deal with the environmental pollution problems caused by traditional chemical technology, thus effectively improving the environmental protection problems in our country, which is of great significance to the development of our chemical industry. Based on the definition and application direction of green chemical technology, this paper focuses on how to use green chemical technology in practical application and how to improve the effect of green chemical technology, hoping to provide some help for the chemical industry in China to use green environmental protection technology to improve the environment.
文摘Solar energy as a renewable new energy has begun to penetrate into people's life and work. Solar photovoltaic power generation is in line with the concept of environmental protection and the strategic policy of sustainable development in China. China currently does not have a fully independent lightning protection technology to guarantee solar photovoltaic power generation. Lightning is not uncommon in our daily life, and its harm should not be underestimated. When lightning occurs, it will release a strong current and produce a very high voltage, which will threaten people's life and property. In daily life, we should understand the lightning protection points, in order to minimize the harm of lightning. The building has been repaired and will not change its position on humans. How to protect the building and do a good job of building safety prevention is the starting point and support of building lightning protection device. Solar photovoltaic power stations have been converted to alternating current since their introduction in China, but DC output accounts for a significant proportion of the entire solar power generation process. As an independent power generation system, photovoltaic power station will have a great risk in the event of lightning strike, so lightning protection technology is necessary for solar photovoltaic power generation.
文摘With the rapid development of the world economy, China has continuously stepped up its reform and opening-up efforts to promote the implementation of the belt and road initiative policy, which has brought great changes to people's work and life. However, as we all know, Many industries are continuously creating more GDP for the country, but at the same time, they also cause irreversible damage to the ecological environment. Under the background of the new era, the Party and the government need to pay attention to the protection of the ecological environment. At present, the environmental protection work such as ecological inspection in our country is continuously popularized. While adopting advanced environmental protection technology, it is also necessary to ensure the effective implementation of the technology and further promote the sustainable development of the ecological environment.
文摘If the medium wave broadcasting transmitting station is attacked by lightning, it will not only bring certain influence to the normal broadcasting, but also consume certain manpower, material resources and financial resources to carry out the maintenance, and in the process of maintenance, it is very likely that safety accidents will occur, causing casualties. Therefore, it is necessary to establish an effective lightning protection system for the medium wave radio transmitting station, especially for the positions such as the transmitting power supply, antenna and the antenna dispatching network, so as to ensure that the radio can be broadcast normally in thunderstorm weather.
文摘With China's rapid economic development and continuous adjustment of industrial structure, the occurrence of plant diseases and insect pests in rural areas is also increasing. Wheat is the main crop planted in our province, and its own yield and quality have always been concerned by people. Plant protection technology plays an important role in wheat high-yield cultivation, and can also promote the construction and development of modern agriculture. Therefore, the relevant units should pay more attention to the plant protection technology, have a comprehensive understanding of the specific content and process of the technology, and work out an appropriate technology implementation plan based on the actual situation, so as to improve the effectiveness of the technology operation and further ensure the quality and quantity of wheat production.
文摘Generally speaking, the MW radio transmitting station will be located at a place with a relatively high altitude, which is relatively empty and has no other special buildings to cover the geographical position. In this geographical position, although it is said that it is helpful for the signal to spread in a wider range, it will face a great risk of lightning strike if it is affected by thunderstorm weather. Once the medium wave radio transmitting station is struck by lightning, its facilities will not only be harmed, but also directly affect the normal broadcasting of the program, and even more serious will cause serious economic losses. Therefore, it is even more important to improve the lightning protection technology of the MW radio transmitting station. It is even more important to briefly summarize the lightning protection technology of the MW radio transmitting station. In order to deepen the technical level of lightning protection of the medium wave broadcasting transmitting station, a relative basis is given.
文摘Building intelligent weak current system contains a large number of electronic equipment, which generally has low insulation strength and poor voltage tolerance, and is easy to be damaged in case of lightning weather. In order to improve the safety and stability of building intelligent weak current system, this paper analyzes the lightning protection technology of intelligent weak current system.
基金Huadian International Group Technology Project(172JLC02300248)Research Project on Lightning Protection Technology for 35 kV Collecting Power Line of Wuxuan Qinglan Wind Farm(SFC/WXY-ZX-FW-23-008).
文摘In the past,lightning strike risk assessment of buildings mainly referred to the Protection against Lightning—Part 2:Risk Management(IEC 62305-2-2010)based on protection angle method.Lightning strike risk assessment of wind farms was conducted according to the Lightning Protection for Wind Energy System(IEC 61400-24-2019),which proposed the method of lightning strike risk assessment for wind turbine.In fact,the basic idea of the two is the same,that is,the source of the lightning strike wind turbine is transformed from the former S1-S4 to the latter N D-N DJ.According to the above method,wind farm was evaluated,and it has been proved that the practice can not achieve good results.After 2018,China has issued the Guide to Evaluation of Lightning Protection Technology in Buildings(T/GZLY 3-2022)and the Technical Specifications for Lightning Interception in Forest Areas(T/LYCY 4062-2024)based on semicircle protection,in which the source of risk defined by lightning point was closer to the reality,highly targeted and effective.Taking offshore wind farm as an example,this paper introduced a new method of establishing six evaluation indicators to determine the risk level according to the principle of compliance and the new protection technology of semi-circular method,which can be used as a reference for technical personnel.
基金supported by National Natural Science Foundation of China(Grants No.51234003)
文摘Chinese steel industry has made significant progress on reducing fresh water consumption and CO_2/SO_2/COD（ chemical oxygen demand） /dust emissions,and improving comprehensive utilization of solid waste. Some steel companies have become topped worldwide. However,due to the large output quantity of crude steel,the whole steel industry is still a huge source of pollutants. At present,environmental protection standards are encountering challenges of lack of technical support,taxation policy and other issues. Steel industry is currently facing enormous environmental pressure. The development trends of environmental protection technologies were studied by summarizing different development stages. To realize the development targets,the industry needs to carry out its research with independent intellectual property rights,develop comprehensive management systems and establish ecological chain with other industries. This can not only raise the level of environmental protection in a broader range,but also improve the energy efficiency of iron and steel plants and increase added value of waste utilization. Finally,23 environmental protection technologies were proposed and 4 new environmental protection practices were studied.
基金This work was supported by Research on the Influences of Network Security Threat Intelligence on Sichuan Government and Enterprises and the Development Countermeasure(Project ID 2018ZR0220)Research on Key Technologies of Network Security Protection in Intelligent Vehicle Based on(Project ID 2018JY0510)+3 种基金the Research on Abnormal Behavior Detection Technology of Automotive CAN Bus Based on Information Entropy(Project ID 2018Z105)the Research on the Training Mechanism of Driverless Network Safety Talents for Sichuan Auto Industry Based on Industry-University Synergy(Project ID 18RKX0667),Research and implementation of traffic cooperative perception and traffic signal optimization of main road(Project ID 2018YF0500707SN)Research and implementation of intelligent traffic control and monitoring system(Project ID 2019YGG0201)Remote upgrade system of intelligent vehicle software(Project ID 2018GZDZX0011).
文摘The increasing use of the Internet with vehicles has made travel more convenient.However,hackers can attack intelligent vehicles through various technical loopholes,resulting in a range of security issues.Due to these security issues,the safety protection technology of the in-vehicle system has become a focus of research.Using the advanced autoencoder network and recurrent neural network in deep learning,we investigated the intrusion detection system based on the in-vehicle system.We combined two algorithms to realize the efficient learning of the vehicle’s boundary behavior and the detection of intrusive behavior.In order to verify the accuracy and efficiency of the proposed model,it was evaluated using real vehicle data.The experimental results show that the combination of the two technologies can effectively and accurately identify abnormal boundary behavior.The parameters of the model are self-iteratively updated using the time-based back propagation algorithm.We verified that the model proposed in this study can reach a nearly 96%accurate detection rate.
文摘In China,there are a lot of high-sulfur gas reservoirs with total proved reserves of over 1 trillion m3,most of which were discovered in the Sichuan Basin.Most high-sulfur gas reservoirs in China,distributed in marine carbonate zones,are characterized by great buried depths,complex geologic conditions,high temperatures,high pressures,high H_(2)S and CO_(2) content,presenting various challenges in gas field development engineering and production safety.Since the development of Sinian high-sulfur gas reservoirs in the Weiyuan area of the Sichuan Basin started in the 1960s,Wolonghe,Zhongba and other medium to small-scale gas reservoirs with medium to low sulfur content have been developed.Ever since 2009,successful production of Longgang and Puguang in the Sichuan Basin,together with some other high-sulfur gas reservoirs highlighted the breakthroughs in development technologies for high-sulfur gas reservoirs in China.This paper reviews the progress made in gas reservoir engineering,drilling and completion engineering,gas production,pipeline transportation,corrosion control,natural gas purification,HSE and other aspects with consideration of specific requirements related to safe,clean and high-efficient development of highsulfur gas reservoirs since the“12th Five-Year Plan”period.Finally,considering the challenges in the development of high-sulfur gas reservoirs in China,we summarized the trend in future technological development with the following goals of reducing risks,minimizing environmental damages,and enhancing the efficiency of high-sulfur gas reservoir development.
