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A few days ago, a number of securities, capital and other companies released their latest research information: the flying car industry has formed a consensus, which will affect the development of the amorphous alloy industry.   One of the basis is starting from this news—— Not long ago, the world's first manned flying car: the world's first intelligent manned flying car for urban traffic, developed by the team of Academician Li Jun of the School of Vehicles and Transportation of Tsinghua University, successfully made a test flight in Xi'an, and the motor it was equipped with was also an amorphous motor.   As a necessary route for flying cars from 0 to 1, we can be sure that amorphous motors will become the track with the most certain investment opportunities in the low-altitude economic trillion-dollar incremental market!   Amorphous motors increase battery life by 20% and are the inevitable choice for flying cars. Reviewing the bull market of new energy vehicles from 2018 to 2022, it can be clearly found that battery density and materials that solve the problem of battery life are the core factors driving the increase in the penetration rate of new energy vehicles. In addition, compared with the several-fold increase of host manufacturers, the battery CATL, which focuses on improving battery life, and the lithium mines Tianqi and Ganfeng have increased by as much as thirty or forty times!   On flying cars, the battery life problem is even more serious! EHang E216 flying car has a range of 40 kilometers; Airbus CityAirbus NextGen flying car has a range of only 70 kilometers. In flying cars, the most important factor restricting battery life is motor energy consumption. If motor energy consumption accounts for 60% to 70% of industrial energy consumption, most of the energy consumption of flying cars is generated in the motor.   According to ROI electric drive data, compared with traditional motors, the efficiency of amorphous motors can be increased by 20%, and copper losses and iron losses at high frequencies can be reduced by 60-90%, greatly improving motor efficiency. Take the amorphous motor carried by Xiaopeng as an example. By replacing the traditional motor with an amorphous motor, the efficiency is increased by 30% and the battery life is increased by 20%! This means that, taking a flying car with a range of 100KM as an example, using an amorphous motor will increase the range to 120KM.   Battery life is currently the biggest improvement bottleneck faced by flying cars. The use of amorphous motors will greatly enhance product competitiveness and is a must-choice for flying cars!   The consensus among investment banks and capital markets is that amorphous motors will be one of the core technologies of flying car companies and the key to growing the flying car market.   In this current trend, amorphous motors are fluttering and ready to fly!   According to information from the Amorphous China Big Data Center: This year, amorphous motors across the country have continued to show a hot trend. In addition to the low-altitude economy, the demand for amorphous alloy motors in new energy vehicles, AI large models, etc. has increased sharply. According to preliminary estimates, This year, the demand for amorphous motors of various types and specifications exceeds one million units.   However, orders from domestic amorphous motor core manufacturing companies are already full, which makes the amorphous alloy industry happy on the surface but actually troubled: Facing the huge market, it has more ideas; being dubbed "new quality productivity", more often than not it is "intentional" But it can’t be used.”   We know that the amorphous motor industry is a systematic project. It is a comprehensive system that combines metallurgy, materials, design, processing and market factors. It requires the coordination of policies, industries, scientific research units, enterprises and demand to make "materials become materials, materials can be transformed into devices, and devices can be put on the market." The Second National Amorphous Motor Seminar held in Yancheng, Jiangsu Province on May 16 set up such a platform to explore the market and technology, inviting domestic and foreign research units and well-known industry experts to talk about processing, applications and trends.   Read more:  https://www.hemeielectricpower.com/

From April 12 to 15, the 2024 Fifth Spring Academic Conference on Amorphous Physics and Materials was held at the Yangtze River Delta Physics Research Center in Liyang, Jiangsu.   This conference is jointly sponsored by the Amorphous Physics Committee of the Chinese Physical Society and the Institute of Physics of the Chinese Academy of Sciences, and hosted by the Yangtze River Delta Physics Research Center. The conference will set up a main venue and three sub-venues focusing on basic academic research, applied exploration research, and cross-industry needs. Academician Wang Weihua's report was titled "Opportunities and Challenges in the Application of Amorphous Alloys", which focused on introducing new applications and new directions of amorphous alloys in terms of high-frequency soft magnetism, bulk amorphous (3C), catalysis and welding materials. Wang Weihua said that amorphous/nanocrystalline is the soft magnetic material with the most beneficial comprehensive performance under high-frequency conditions. It has a wide range of application prospects and will generate an industry worth hundreds of billions of yuan in the next 5-10 years; bulk amorphous is used in folding screens There are practical applications in mobile phone hinges, high-end watch cases, flexible gears, and space mirrors, and the application fields need to be further expanded; catalysis and welding, as application directions that started early and have little research, will face more opportunities in the future. Domestic representative amorphous/nanocrystalline companies have independently innovated, and some fields have achieved a leap from following to leading on a global scale.   Academician Liu Riping's report was titled "Metastable Academic Ideas and Development of New Materials". He said that in recent years, using the perspective of metastable materials to rethink important scientific and technical issues related to traditional materials has gradually become a new growth point in the materials discipline. Academician Liu focused on the work achievements of the State Key Laboratory of Metastable Materials Preparation Technology and Science in recent years, and successively introduced the "Synthesis of Nano-Twinned Superhard Diamond" by Tian Yongjun's team and "New Materials for High-speed and Heavy-Duty Railway Frogs" by Zhang Fucheng's team. "New Materials and Rail Integration New Technology" and his own team's "lightweight (low-density) steel development" and other major achievements. These achievements have very broad engineering application prospects, contribute to "Made in China", and are expected to break foreign monopolies in some fields.   This conference aims to provide a platform for in-depth academic exchanges and industrial cooperation for outstanding scholars and entrepreneurs in the field of amorphous physics and materials, promote the integration of industry-university-research cooperation, promote the diversified cross-integration of disciplines, applications, and industrialization, and discuss Cutting-edge technologies and future development directions of amorphous physics and materials, focusing on the connection between technology supply and market demand, using demand to drive the research and development and transformation of scientific and technological achievements, especially in industries such as new energy, precision medicine and health, and intelligent manufacturing, to achieve non-stop The disciplines of crystalline physics and materials have developed by leaps and bounds. More than 500 representatives from relevant universities, research institutes, well-known enterprises and other units across the country participated. The Secretariat of the Amorphous Alloy Materials Application Branch of the China Electrical Equipment Industry Association organized a group to attend the conference to study and conduct industry-university-research collaboration.   This conference is the fifth conference following the 2018 Anhui Jingde Conference, the 2019 Shenzhen Conference, the 2021 Nanjing Conference and the 2023 Dongguan Conference.   Read more:  https://www.hemeielectricpower.com/

Recently, at the Shanxi Shuozhou Shentou switching station-Yantong double-circuit line project site that was connected to the 500 kV line from the 1,000 kV substation in northern Shanxi, Shanxi's 500 kV and above transmission line projects used drone AI for independent acceptance for the first time.   "Traditional quality acceptance is mainly based on manual tower inspection and ground instrument measurement. It is easily affected by terrain, weather, measurement angle, etc., and has visual blind spots, which affects the acceptance effect." The relevant person in charge of the Shanxi Construction Branch of State Grid said , this innovative acceptance uses drone RTK + front-end AI visual navigation, automatic target tracking and locking, adaptive zoom shooting and other technologies. Compared with traditional RTK flight shooting, this innovative acceptance has the full automatic shooting of key parts and a pixel increase of more than 10 times. , automatic data classification management after the job is completed and other advantages. The data formed by AI automatic acceptance can provide data processing personnel with an immersive sensory experience and make it easier to detect minor defects.   This drone inspection captured the real-time installation status of transmission line towers, fittings, insulator strings and other parts, and accurately scanned the distance between ground wires, tree growth in line corridors, geographical environment, crossings and other conditions. These photos will be included in the project acceptance report and digital archives, and will be accumulated and improved to form a typical project defect database, providing the most comprehensive and basic original data for the reliable operation of the power grid, and at the same time providing guarantee for the "zero-defect" operation of the project.   In the next step, the company will further explore the data value of the standardized acceptance typical defect database, use typical neural networks to achieve autonomous classification and identification of collected images, automatically identify and alarm power grid engineering defects and form reports, and promptly report them to construction, supervision and construction personnel. , operation and other participating parties push information to realize process management of defect identification, information reminders, defect rectification reporting, and rectification confirmation, and realize digital and intelligent transformation in the field of power grid infrastructure.   Read more:  https://www.hemeielectricpower.com/

As the Qingming Festival approaches, the time for employees return to their hometown for spring outings and ancestral worship arrived.As the Qingming Festival approaches, the employees of Hemei Electronics eagerly anticipate the holiday to pay homage to their ancestors and enjoy the refreshing outdoor activities.The arrival of the Qingming Festival signifies both a time of remembrance and a celebration of nature's awakening. It is a cherished tradition for Hemei Electronics' staff to journey back to their hometowns, honoring their forefathers and embracing the beauty of spring. The serene atmosphere, coupled with the fragrance of blooming flowers, fills the air with a sense of tranquility and nostalgia. With hearts filled with reverence and gratitude, the employees embark on this annual pilgrimage, traveling to the rural villages where their ancestors rest. The vibrant green of the countryside revitalizes their spirits, providing a welcomed respite from the fast-paced urban lifestyle. Amidst sweeping landscapes of rolling hills and winding rivers, they find solace and connect with their roots, carrying on the traditions passed down through generations.The Qingming Festival is not only a time for paying respects, but also an opportunity for the employees of Hemei Electronics to bond with their families and loved ones. Together, they embark on leisurely strolls through picturesque countryside, taking in the delightful symphony of chirping birds and rustling leaves. Laughter and joy reverberate through the valleys as children race along the meandering paths, cherishing the moments spent with their elders.As the sun casts its golden glow, signaling the end of the day's activities, the employees gather around the ancestral gravesites to offer prayers and burn incense. In this solemn yet serene atmosphere, they reflect upon their roots, expressing gratitude for the wisdom and hardships endured by their ancestors. It is a time for contemplation and introspection, a reminder of the preciousness of life and the importance of cherishing our heritage.The Qingming Festival shines a light on the importance of honoring our past while embracing the bounties of the present. Hemei Electronics' employees seize this occasion to strengthen the bonds of family, to rejuvenate their spirits in the embrace of nature, and to embody the values instilled in them by their ancestors.In this time of remembrance and togetherness, Hemei Electronics wishes everyone a joyous and meaningful Qingming Festival, filled with love, gratitude, and a deep connection to our roots. Read more： https://www.hemeielectricpower.com/

Collaboration, innovation, breakthrough - green development, dreaming of the deep blue. 27 January, hosted by China Power Science and Technology Network, co-organised by the China Energy Research Society Marine Energy Professional Committee, "offshore wind power construction and operation and maintenance of innovative technology development forum" was held in Tsinghua Sanya International Forum. International Forum was grandly held.   Li Huajun, academician of the Chinese Academy of Engineering, Lian Jijian, president of Tianjin Polytechnic University, served as the chairman of the forum, and 26 experts from power grids, wind power companies, research institutes, colleges and universities, and other guests to discuss the opportunities and challenges faced by the development of offshore wind power, and the exchange of technological and industrial innovation results, to help the industry develop in a healthy and sustainable manner.   In the context of the green low-carbon era, the global energy structure reshaping, offshore wind power has become an important hand to promote energy transformation in China. China's offshore wind resources are very rich, 50m water depth or so can be developed offshore wind power more than 500 million kW, offshore photovoltaic more than 1 billion kW, the industry scale up to 10 trillion yuan, the development potential is huge. Forum based on "synergy, innovation, breakthrough - green development, dreaming of the deep blue" theme, around the "offshore wind power development trend and prospect analysis", "Offshore wind power construction key equipment and technology", "floating photovoltaic new structure and fixed photovoltaic structure", "wind and storage multi-energy complementary system key issues", "Marine Energy Economy Development and Construction" and other topics were discussed.         The forum not only follows the past, setting up a number of "expert Q&A and in-depth exchange" sessions, but also adds a "roundtable forum", where experts express their views on a topic and share their opinions in multiple dimensions, so that the guests can understand the topic more comprehensively and form a consensus.   Technology empowerment, and scenery counterparts. Forum to build a communication platform, through speeches, Q&A, communication, the establishment of a collaborative mechanism, convergence of advantageous resources, incubation of innovative achievements, with practical action to lead and promote the high-quality development of marine energy.   Learn more about power news： https://www.hemeielectricpower.com/

On 15 March, State Grid Corporation of China Limited Shanbei-Anhui ± 800 kV UHV DC Transmission Project and Yuexi Pumped Storage Power Station (hereinafter referred to as "Shaanbei-Anhui UHV Project" and "Yuexi Pumped Storage Power Station") commenced construction. ") were started. The commencement of construction of the two projects is of great significance to ensure the safe and reliable supply of electricity in China, accelerate the construction of a new type of energy system, realise the goal of carbon peak and carbon neutrality, and promote high-quality development.   It is reported that Shaanxi - Anhui UHV project rated voltage ± 800 kV, rated capacity of 8 million kilowatts, dynamic investment of 20.5 billion yuan. The project starts from Baotashan converter station in Yan'an City, Shaanxi Province, and ends at Hezhou converter station in Hefei City, Anhui Province, passing through Shaanxi, Henan and Anhui Provinces, with a total length of 1,069 kilometres of DC lines. The sending end will gather photovoltaic, wind power and energy-saving thermal power from Shaanxi with 750kV AC system, and the receiving end will be connected to the load centre of Anhui. Yuexi Pumping and Storage Power Station is located in the territory of Huangwei Town, Yuexi County, Anhui Province, installing four 300,000 kW reversible units, with two 500 kV outlets to access the East China Power Grid, with a dynamic investment of 7.5 billion yuan. After the two projects are completed and put into operation, it can improve the power surplus and shortage mutual aid, time and space complementary, multi-energy interchangeability, achieve a wider optimal allocation of electric power resources, better guarantee the safe and stable operation of the power grid, and effectively help the construction of the national unified big market and modern infrastructure system, and promote the urban and rural and regional co-ordinated development. Shaanbei-Anhui extra-high voltage project, Yuexi pumped storage power station two projects started construction, is to promote the green transformation of energy, service carbon peak carbon neutral goal of the important deployment. Shaanbei-Anhui UHV project send end access supporting new energy 11 million kilowatts, can promote the large-scale development and utilisation of clean energy in Shaanxi, optimise the structure of energy supply in Anhui, and enhance the proportion of green power consumption. The construction of Yuexi pumped storage power station will serve the construction of Anhui intelligent and green manufacturing province and help Anhui to build a 10 million kilowatt green energy storage base in Yangtze River Delta. After the two projects are put into operation, it can promote new energy power consumption of more than 18 billion kWh per year, replace coal consumption of 6.3 million tonnes, reduce carbon dioxide emissions of 16.6 million tonnes, with significant energy saving and emission reduction benefits. At present, State Grid has completed a total of 35 UHV projects, and the network structure in the operation area is constantly optimised, providing strong network support for the development of various types of clean energy, and playing an important role in guaranteeing the safe and reliable supply of electric power, and promoting green and low-carbon development.   Read more:  https://www.hemeielectricpower.com/

International Women's Day is just around the corner, and the atmosphere at our company is buzzing with excitement. The 8th of March is a day we eagerly look forward to, as it allows us to celebrate and appreciate the remarkable women who contribute their talents and hard work to our organization. Each and every female member of our team was greeted with a stunning bouquet of flowers, symbolizing the elegance and grace they bring to the workplace. The delicate petals intertwined, creating an enchanting display of femininity and resilience. But the festivities didn't stop there. The aroma of freshly brewed tea filled the air as delicious and refreshing milk teas were presented to the deserving ladies.  The entire workforce radiated joy and camaraderie, united in the celebration of womanhood. Laughter echoed through the corridors, blending harmoniously with the hum of productivity. Happy conversations filled every corner, as colleagues shared stories of empowerment, achievements, and dreams for the future. This momentous occasion served as a gentle reminder of the immense contributions women make in all spheres of life. It showcased the power of unity and recognition, reminding us that true success lies in embracing diversity and empowering one another.

With the continuous development of science and technology and the continuous expansion of human activities, microelectronics technology, computer technology is applied to all aspects of social life, a large number of high technology content, complex internal structure of electrical and electronic products are widely used, so that it is increasingly informatization and electromagnetic sensitivity. The influence of complex electromagnetic environment on human beings has attracted more and more people's attention. Therefore, it is of great significance to study the coupling mechanism of electromagnetism.   I. Concept of electromagnetic environment 　　Electromagnetic environment refers to the sum of electromagnetic phenomena existing in space. A variety of man-made electromagnetic radiation and natural electromagnetic radiation constitute a complex electromagnetic environment, in which man-made electromagnetic radiation, including mobile phones, radio conversational machines, radio and television transmitters, satellites, radar, etc., lightning, static electricity, geomagnetic field, sunspot activity, cosmic rays, etc., constitute a natural source of electromagnetic radiation. 　　The formation of electromagnetic radiation effects requires the simultaneous presence of the following three elements: 　　Electromagnetic wave source, refers to the components, equipment, systems or natural phenomena that generate electromagnetic waves; 　　A coupling channel, meaning a channel or medium that couples or propagates energy from a wave source to a sensitive device and causes that device to respond; 　　Sensitive device, a device that responds to electromagnetic waves. 　　These three elements are usually referred to as the three elements of electromagnetic coupling.   Ⅱ. The coupling mode of electromagnetic radiation 　　(A) antenna coupling 　　All exposed to the electromagnetic field of the metal conductor can be considered as an antenna, "front door" coupling ("front-door" coupling) means that the electromagnetic pulse or microwave energy through the target on the antenna coupled to the electronic system. Therefore, according to the design characteristics of the antenna to calculate the coupling strength, when the electromagnetic wave frequency and antenna design frequency is equal, the coupling reaches the peak. 　　(B) hole and seam coupling 　　Generally, electronic equipment is encapsulated in a container composed of conducting material. Due to equipment cooling and ventilation, notches, cracks, and feed, signal transmission needs, the container can not be sealed, there are different types of holes and seams, which provides a coupling pathway for electromagnetic radiation. "Back-door" coupling ("back-door" coupling) is a high-energy electromagnetic pulse energy through the target on the hole, gap coupling into the system, interference or destruction of electronic equipment. When the wavelength is smaller than the size of the holes, electromagnetic waves will enter the shielding body without obstruction; when the wavelength is larger than the size of the holes, electromagnetic waves will be blocked; when there is the size and length of the electromagnetic wave comparable to the holes, electromagnetic wave coupling is very serious, will produce resonance. 　　(C) power line, transmission line coupling 　　Power line is exposed to the system outside the long line, vulnerable to electromagnetic energy attack, both to receive interference energy can also transmit interference energy. If there is a power line or signal transmission line from the shielding shell connected to the inside of the system, the received, induced current will propagate along the line into the shielding body. The general propagation is microwave pulse current, even if the current is not introduced from the lead of the transmission cable core, but is induced on the outer shield, through the transfer impedance will also be coupled to the core, directly into the electronic system. For microwave, shielded cable transfer impedance is also much larger than the RF, so microwave can be through the power line, the braided shield of the transmission line into the core. 　　(D) the skin effect of metal shells 　　Electromagnetic wave penetration of the metal shell is realized through the skin effect, electromagnetic waves in the material skinning depth as follows 　　Where f is the frequency of the electromagnetic wave, and respectively for the magnetic permeability and electrical conductivity of the metal shell material. For 2GHz microwave signals, it is in the copper (=5.5 × 107S/m) and aluminum (=3.2 × 107S/m) in the skinning depth of 1.52 and 2.82. For higher frequency microwave signals, the value of the skinning depth is smaller.   Ⅲ. the role of electromagnetic energy mechanism 　　Electromagnetic hazards on the impact of high-tech equipment, mainly through the energy of conduction coupling, radiation coupling occurs, the role of the mechanism can be summarized as follows four aspects: 　　(A) thermal effect 　　Electrostatic discharge and high-power electromagnetic pulse generated by the thermal effect is generally completed in nanoseconds or microseconds, is an adiabatic process. As an ignition source and detonation source, instantly cause flammable, explosive gas or electrical fireworks explosion, but also can make the system of microelectronic devices, electromagnetic sensitive circuits overheating, resulting in localized thermal damage, circuit performance deterioration or failure, and even lead to the stockpile of material combustion and explosion. 　　(B) radio frequency interference and "surge" effect 　　Electromagnetic radiation caused by radio frequency interference, information technology equipment caused by electrical noise, electromagnetic interference, so that it produces false action or functional failure. Strong electromagnetic pulse and its "surge" effect on the system will also cause hard damage, not only can make the device or the performance parameters of the circuit deterioration or failure, but also the formation of cumulative effects, buried potential hazards, so that the circuit or the use of equipment to reduce. 　　(C) strong electric field effect 　　Electromagnetic hazards generated by the strong electric field (especially static field) can not only make the MOS circuit gate oxide layer breakdown or intermetallic dielectric breakdown, resulting in circuit failure, but also the formation of potential damage to the system self-testing instrumentation and sensitive devices affect the work. 　　(D) magnetic effect 　　Electrostatic discharge, lightning strikes, lightning and similar electromagnetic pulse caused by strong currents can produce a strong magnetic field, so that the electromagnetic energy is directly coupled to the internal system, interfering with the normal operation of electronic equipment.   　　References: 　　[1] Liu Shanghe, Wu Zhancheng:Electromagnetic environment and high-tech weaponry[J]. Modern Military,2001. 　　[2] Wu Xiong:Environmental Problems of Electric, Magnetic and Electromagnetic Fields[J]. Electric Power Environmental Protection,2007,(4). 　　[3] Gao Yan and Yu Bo: Characteristics of Complex Electromagnetic Environment[J]. Sichuan Journal of Military Engineering,2008,(1). 　　[4] Gao Bin, Tang Xiaobin: Complex Electromagnetic Environment Effects[J]. Journal of China Academy of Electronic Science,2008,(4).

Current transformer has the role of current conversion and electrical isolation, is the power system measuring instruments, relay protection and other secondary equipment to obtain electrical primary circuit current information sensor. The structure of the current transformer, by the mutual insulation of the primary winding, secondary winding, iron core and frame, shell, terminals and other components. Its working principle is basically the same as the transformer, the primary winding turns N1 less, directly connected in series with the power line, the primary load current through the primary winding, the alternating magnetic flux induction generated by the proportionally reduced secondary current; the secondary winding turns N2 more, and instruments, relays, and other current coils of the secondary load in series to form a closed loop. energy harvesting current transformer self-powered current transformer split core current transformer Positive oil-immersed current transformer  　　At present, the domestic current transformer is mainly oil-immersed orthostatic, is a traditional form of our country, the primary line for the traditional U-shaped structure, its main insulation for the transformer oil and cable paper insulation structure, the main insulation is mainly made of cable paper wrapped and become, in order to make the internal electric field is more uniform, the insulation layer has a main screen and the end of the internal screen. As the current transformer is a U-shaped structure, the outer insulation casing is generally tower-shaped structure. 　　Advantage is that you can use insulation banding machine for insulation banding, banding equipment is generally relatively simple, low price. 　　The disadvantage is that the product is bulky, tower casing internal cavity is relatively large, the amount of oil is relatively large.    Inverted SF6 gas-insulated current transformer  　　Through the introduction of technology in China appeared inverted SF6 gas-insulated current transformer, the structure of the product using inverted structure, the secondary coil through the metal shielding package, placed in the upper part of the product, due to the coil is relatively heavy, generally need to pot insulator or insulated strut support, the secondary coil through the introduction of its internal a metal tube into the low-voltage side of the primary wire is generally a straight line of copper or aluminum tubes, all the cavities filled with SF6 gas. 　　The advantage is that the resistance to dynamic thermally stabilized current is strong. 　　The disadvantage is that its electric field distribution is very uneven, especially in the upper flange of the casing electric field is more concentrated, some products are equipped with shielding electrodes, the volume is larger, at the same time, because of its internal SF6 gas-filled, if the gas leakage, or impact on the atmospheric protective layer, is not conducive to environmental protection.    Inverted oil-immersed current transformer  　　Through the introduction of technology domestic production of inverted oil-immersed current transformer, the product for the oil-immersed cable-paper insulated current transformer, the secondary coil wrapped through the metal shielding, placed in the upper part of the product, the secondary coil of its internal a metal pipe into the low-voltage side of the secondary coil and the lead outside the metal pipe is not wrapped in cable paper and crumpled paper insulation, the primary wire is generally a straight line of copper or aluminum tubes. 　　Advantages are small size, light weight, beautiful appearance and resistance to dynamic heat stabilization of current capacity. 　　The disadvantage is that the coil part and the lead pipe part of the insulation package can not be completed at once, the coil part of the insulation package needs to be completed manually, and need to be insulated with the lead pipe part of the docking, insulation package time-consuming and laborious, long processing cycle.    Dry type current transformer  　　Dry current transformer is a new product, the primary line using U-shaped copper or aluminum wires, insulation for the polyester film banding, banding process between the polyester film gap filled with silicone grease to improve insulation properties, in the insulation layer outside the bonding of the silicone rubber umbrella, the formation of the current transformer's external insulation; secondary coils were set on both sides, and closed with a metal shell. The product due to the insulation layer filled with semi-liquid medium, there will be no oil leakage phenomenon.    Electronic Current Transformer  　　With the rapid development of optoelectronics technology, many developed countries have turned their attention to the use of optical sensing technology and electronics to develop a new type of electronic current transformer, referred to as photoelectric current transformer. Electronic current transformer refers to the output of small voltage analog signal or digital signal current transformer, its meaning in addition to include photoelectric current transformer, but also includes a variety of other current sensors using electronic testing principles. Electronic current transformer is divided into active and passive two categories. 　　The advantages of electronic current transformer is, no iron core, insulation structure is simple, small size, small quality, good linearity, good resistance to electromagnetic interference, no magnetic saturation phenomenon, high measurement accuracy, the output signal can be directly into the microcomputerized measurement and protection equipment interface. 　　Disadvantage is that the sensing head is more sensitive to temperature and vibration, in order to improve accuracy and stability, electronic signal processing part of the line will be more complex, and for active electronic current transformer, must protect the stability of the power supply.

Hemei Electronics is honored to participate in Power Asia 2021, which is themed "Smart Energy, Green Grid" and aims to focus on innovation and development in the fields of electric power, smart grid, energy, construction, rail transportation, wire and cable. As an experienced and visionary company, Hemei Electronics has always been committed to promoting the maturity and transformation of the power industry. We understand the growing demand for green, sustainable energy worldwide, and we are committed to providing our customers with innovative solutions to meet the ever-changing needs of the industry. At this Power Asia, we will showcase our unique smart power products and solutions, which include source-less power supply units, CT pickup power modules, ultra-high precision AC measurement sensors, pomo alloy cores, magnetic shielding boxes, and more. These products not only enable effective dispatch and supply of power, but also minimize energy loss and improve energy efficiency. Whether you are an exhibition visitor, industry expert or partner, we sincerely invite you to visit our booth and learn about our innovative products and solutions. We look forward to exploring the future of the power industry with you and laying the cornerstone for a better tomorrow! In building and rail transportation, Hemei Electronics will showcase our innovative electrical products and systems to improve energy efficiency and safety in buildings and transportation facilities. Our rugged wire and cable products offer good insulation and reliable current transmission capabilities to meet the demands of a wide range of demanding environments. We are confident that our participation in Power Genius Asia will bring more business opportunities and partnerships to Hemei Electronics. We are looking forward to in-depth exchanges and cooperation with professionals from all walks of life to jointly promote the development of smart energy and green power grids, and to contribute to the sustainable development of the world.

On the 24th September 2022, the inauguration ceremony of the new headquarters of Hemei Electronics came to a perfect end, leaving a colourful mark in the long river of history. All employees gathered together to witness this important moment. Under the ethereal golden light, the stylish and modern architectural style of the new headquarter highlights Hemei's firm commitment to innovation and progress. It kicked off with a powerful welcome speech from the honourable General Manager, who pulled off the salute with a resolute and dignified expression that embodied the spirit of joy. His words contained a firm belief in the unlimited potential of the future of Hemei Electronics. Every syllable contained ambition and the promise of a better tomorrow.