In order to implement the deployment of the "governance plan", on February 24, the Second Division of Hazardous Chemicals Safety Supervision and Administration of the Ministry of Emergency Management compiled the "Large Oil and Gas Storage Base" according to the "Work Plan for Implementing Safety Risk Management and Control Measures for Large Oil and Gas Storage Bases" issued by the State Council Safety Committee Office. Basic Requirements for Lightning Early Warning System (Trial)" and "Basic Requirements for Emergency Shutoff System for Oil and Gas Storage Enterprises (Trial)" to ensure that the equipment and application of large-scale oil and gas storage lightning early warning systems and the rectification of emergency shutdown systems are completed before June 30, 2022. The IEC (International Electrotechnical Commission) standard "Protection against lightning – Thunder storm warning systems, IEC 62793" was finalized in January 2015. The lightning early warning system uses atmospheric electric field detection devices, sensors, etc., and uses the measurement of environmental static electricity. The principle of the field is used to detect and analyze thunderclouds. By collecting lightning-related information in real time, the system realizes real-time monitoring, comprehensive perception, and near-warning of lightning activities in large oil and gas and adjacent areas. The basic functions are as follows: 1. Real-time lightning monitoring, with real-time detection of lightning characteristic parameters such as ground atmospheric electric field. 2. Lightning approach warning, including lightning warning level, lightning warning time, warning area, warning cancellation and other information. 3. Statistical query of lightning historical data, with the functions of lightning early warning information query and statistical analysis in the coverage area. 4. It has the function of data interaction with the national hazardous chemical risk monitoring and early warning platform.

In January 2022, the Work Safety Committee of the State Council pointed out in the "National Centralized Control Plan for Hazardous Chemical Safety Risks" (hereinafter referred to as the "Governance Plan") that "some large oil and gas storage bases such as national oil reserves have a low level of intrinsic safety. Emergency cut-off, gas detection, video surveillance, and lightning warning “four systems” are not perfect”, and there are major safety risks in production and storage。

On the morning of March 17, 2022, Anhui Jinli Electric Technology Co., Ltd. (hereinafter referred to as Jinli Electric), Wang Daoyong, sales manager in central China, and He Ming, head of market support in the technical department, came to PowerChina by appointment. The Smart Energy Company of the Power Design and Research Institute conducted exchanges on new energy lightning protection technology with the leaders and design engineers of the power automation room and other relevant departments. China Power Construction Group Huazhong Electric Power Design and Research Institute Co., Ltd., formerly known as Henan Electric Power Survey and Design Institute, was founded in August 1958 and is affiliated to the world's top 500 enterprises - China Power Construction Group Co., Ltd. It is a national large-scale comprehensive design enterprise with national engineering design comprehensive grade A qualification. With planning and consulting, survey and design, general project contracting, investment and operation as the four main businesses, the business scope involves power transmission and transformation Electricity, new energy, construction, municipal logistics warehousing, overseas engineering and other fields.  In recent years, Huazhong Electric Power Design and Research Institute Smart Energy Company has undertaken the general contracting and design work of a large number of new energy projects. In this exchange meeting, firstly, the current status of lightning protection design of photovoltaic projects at home and abroad was introduced, combined with IEC61643-32:2017 Low-voltage surge protector (SPD) Part 32: Electricity of photovoltaic installations Selection and use guidelines, introduce the design of SPD parameters under different conditions whether there is LPS on the side of the photovoltaic power generation unit, and introduce the solutions of photovoltaic box transformers, wind power box transformer lightning protection products, combined with actual cases. and selection considerations.

The electronic truth is: the use of the electric field change rate alarm is actually a kind of identification alarm after lightning occurs, and the data accuracy is far lower than the data of the lightning location system. The use of rate-of-change early warning itself is based on external electrical changes, which has already represented the occurrence of lightning, so the electronic probe is not a real atmospheric electric field meter, and the early warning lags behind the field grinding type. ●Selected materials can resist acid pollution and are suitable for various harsh environments. ●The system can be networked and can be used in conjunction with other meteorological equipment. ●Can realize remote monitoring. ●Established a multi-product database system for data storage and analysis. By continuously sampling the atmospheric electric field at the installation site by the atmospheric electric field meter, we can know the local electric field intensity, and when a thunderstorm occurs, the electric field intensity will change sharply. A lightning imminent warning occurs. Lightning early warning system is currently recognized as one of the most effective measures to greatly reduce lightning casualties and disasters.

Anhui Jinli lightning early warning system adopts field grinding electric field meter, which is a highly centralized software and hardware system integrating atmospheric electric field intensity monitoring and lightning near-warning. The field grinding lightning early warning system adopts DC brushless motor to It rotates at a uniform speed to realize the switching between shielding and non-shielding of the stator. The stator is an electric field induction surface, so as to obtain a changing current signal (Q=ε*S*E). It uses the measured electric field, electric field change rate, electric field mean value three Method technology can achieve 0% false alarm rate. The truth of the field grinding probe is: the anti-interference ability is relatively strong, the collected electric field value data is accurate and stable, and it can achieve early warning even if the first lightning occurs locally.

Large oil and gas depots have always been a high-risk area for lightning protection. In January 2022, the State Council Work Safety Committee issued the "National Centralized Control Plan for Safety Risks of Hazardous Chemicals" (hereinafter referred to as the "Governance Plan"). "Some large oil and gas storage bases such as national oil reserves have a low level of intrinsic safety, and the "four systems" of emergency shutdown, gas detection, video surveillance, and lightning early warning are imperfect." On February 24, the Ministry of Emergency Management became dangerous In accordance with the requirements of the Work Plan for Implementing Safety Risk Management and Control Measures for Large-scale Oil and Gas Storage Bases issued by the State Council Security Committee, the Second Division of Supervision and Management organized the compilation of the Basic Requirements for Lightning Early Warning Systems for Large-scale Oil and Gas Storage Bases (for Trial Implementation) Basic Requirements for Emergency Shutdown Systems for Gas Storage Enterprises (Trial Implementation)" to ensure that large-scale oil and gas storage bases are equipped and applied with lightning warning systems and rectification of emergency shutdown system problems before June 30, 2022.

There is a speed called China Speed, and there is a pride called China High Speed Rail. With the rapid development of China's electrified railways, high-speed railway electrical and electronic equipment is gradually developing towards systematization and integration, and the equipment is resistant to overcurrent. The level is getting lower and lower, which leads to the increasingly serious damage to railway system equipment caused by the intrusion of strong electricity such as lightning and induced overvoltage, which not only causes a large number of primary equipment to burn down, but also causes many secondary equipment damage. Accidents such as the exit of the integrated automation system and the tripping of the network switch have seriously affected the safe and reliable operation of the railway system. In order to solve the problem of strong electricity (including lightning overvoltage and power frequency overvoltage) to the secondary system of railway traction substation Harm, China Railway Corporation issued "Transportation and Supply Equipment Letter [2016] No. 325 "Guiding Opinions on Optimizing Technical Schemes for Preventing Intrusion of Strong Electricity in Secondary Systems of Traction Substations" on September 1, 2016, and in 2017 July 12th Document [2017] No. 240 "Implementation Plan for Optimal Setting of Surge Protectors in Traction Substations".

I. Introduction With the rapid development of modernization construction and the wide application of power electronic technology, the threat posed by lightning is becoming more and more serious. Taking chemical enterprises as an example, there are many towering structures on site, which are easily invaded by lightning in thunderstorm weather Induced lightning current is generated on the internal power cables and signal cables, which is extremely harmful to the normal production of enterprises, and lightning safety protection measures have attracted the attention of users. II. Although chemical companies conduct lightning protection inspections every year in accordance with GB/T 21431-2015 "Technical Specifications for Detection of Lightning Protection Devices in Buildings". However, during the thunderstorm season, the following problems still exist in operation: 1) The communication port of DCS or PLC instrument automation system is easily damaged; 2) The outdoor monitoring system of the tank farm is easily damaged; 3) The inverter is easy to trip. The user system is checked and found that there are still defects in the overall lightning protection comprehensive configuration, mainly including the following points: a) The corrosion of external lightning protection facilities (down conductors) is more serious; b) There are still many unreliable connections in the equipotential connection between the field equipment cabinet shell or passive conductive components, either unconnected or the connection line is loose; c) The on-site lightning protection wiring is unreasonable; d) Symbolic configuration of surge protector.