Since the National Fourteenth Five-Year Plan, with the gradual advancement of the dual carbon goals, the transformation of the energy structure has been the decisive factor in the short and medium-term decarbonization process. The total installed capacity and power generation of clean power represented by wind power and photovoltaic have been increasing year by year. The change in the amount of new energy power generation will completely change the traditional power system's "source with load" power production method.   The volatility and intermittentness of new energy electric energy production is one of the urgent problems to be solved. When the power grid cannot guarantee sufficient adjustment capacity, the safety of electric power supply will face severe challenges. Therefore, relevant national departments and local governments have strengthened the deployment of new energy storage development goals, industrial layout, and policy mechanisms to comprehensively promote the development of "wind power + energy storage". Now, energy storage solutions for all scenarios of wind power have been widely used and recognized in scenarios such as assisting wind power grid connection, power frequency and peak regulation, and demand-side response.   Adapting measures to local conditions, scientific design, efficient utilization, and grid balance are key technologies for wind farms to configure energy storage systems, and they are also the high-quality development requirements for wind power in the process of achieving carbon neutrality. Under the goal of "carbon peak" in 2030, Sungrow will continue to promote wind storage integration innovation, fully lead the development and innovation of wind power conversion technology, and strive to become a world-class supplier of wind power technology and equipment, and continue to provide customers with more wind power value-added services. Hot tags: solar surge protection device, solar spd, dc spd 1000v, dc spd 600v, dc solar spd, solar surge protector, solar surge protector device, dc surge protector device

  From October 29 to 31, 2021, Anhui Jinli held the first seminar on lightning protection technology which aims to discuss the application of the overall lightning protection scheme in the industry under the background of "dual carbon", to exchange experience in lightning protection, and to discuss the development direction of lightning protection technology in the future. There were 76 electrical households, design institutes, electrical complete sets and equipment integration enterprises, with 124 participants.   In this conference, the chief engineer Mr. Wang Chuanyuan, based on his 30 years of experience in the overvoltage industry and years of lightning protection theoretical research and practical results, put forward the four elements of lightning protection technology of "theory, object, standard and product"; Electrical Engineering of Southwest Jiaotong University Mr. You Chengxi, a doctor of the college, shared the "Application Technology of Electric Railway Traction Power Supply", introducing the process of China's railway from "none" to "existence", from "normal speed" to "high speed", and from "rapid expansion" to "quality improvement" , and experience in lightning protection of railway traction power supply; Mr. He Ming, director of Jinli Electric’s technical department, shared the "Interpretation of IEC Lightning Protection Standards and Lightning Protection Technology for Low-Voltage Systems".   Leaders and expert representatives visited Jinli surge protection device laboratory, high voltage laboratory and six production workshops of parent and subsidiary companies in the industrial park of the group company, and watched the SPD test, residual voltage test of the surge arrester and performance test demonstration of single-phase grounding fault system.   Combined with the morning report sharing and afternoon visits and tests, the participating leading experts conducted in-depth exchanges and discussions on the application of lightning protection and lightning arrester and lightning protection design standards in various industries.   Combining with the company’s focus on industry development trends, from the perspective of product application, SPD has shown a trend of customization of scene applications and miniaturization of product sizes; now and in the future, SPD is rapidly developing towards intelligence and digitization, from failure to tripping remotely. Signal, lightning counting, peak detection, waveform restoration, life prediction, grounding grid resistance monitoring, lightning warning, etc., lightning protection products are being integrated into the booming digital trend.   Based on the concept of “adhering to the original”, Jinli is committed to power system security and focuses on the over-voltage protection of the electrical system. With technical service network, we can provide fase and professional service for users and create a safe and worry-free electricity environment.&nb

  In October, our company organized all employees to conduct a 2-day outdoor development training at the Qingyang Mountain Outdoor Development Base.   The two-day journey allowed everyone to relax in the usual stressful work, gained happiness and friendship, and deepened the feelings between family members. Colleagues in various departments have a better understanding of each other, which will make our later work more smoothly. This outdoor expansion activity has experienced team generation, display, and integration. Each team member saw the strengths and weaknesses of the team. After experiencing the joy of success brought by communication, collaboration, and execution, everyone also deeply felt Jinli people "gathering is a fire, scattered is the sky full of stars", each of our family members strive to shine in their respective jobs, and continue to provide a strong guarantee for the company's sustainable development.

  Metal oxide varistor (MOV) is a semiconductor element with unique grain boundary structure. Its resistance value decreases sharply with the increase of voltage. It has the advantages of excellent nonlinear volt-ampere characteristics, high current capacity, low residual voltage, no freewheeling and low cost. It has been preferred to be used in power supply and signal port as over-voltage protection components.   Although the current capacity of the MOV itself is large, the energy capacity is not large, that is, its rated continuous power is very small. The commonly used MOV rated power is generally at the mW level, which cannot withstand the constant current. For example, when MOV runs in U=53V circuit, the leakage current is 100μA due to aging. According to P=UI, substituting U=53V and I=100μA, the calculated heating power consumption is 5.3mW, which is the same level as the power of MOV itself. When the MOV leakage current reaches the milliampere level, it is enough to exceed the continuous power that it can withstand, which will cause combustion problems. To the burning problem caused by the failure of MOV, the current mainstream industry adopts the blocking method, which has many shortcomings and cannot achieve the purpose of truly solving the burning problem of MOV. The latest research technology adopts sparse methods to prevent and deal with warnings in advance, so as to truly eliminate the burning problem of MOV. At present, Anhui Jinli conducts in-depth experimental research on two aspects of abnormal temperature and abnormal leakage current.

In recent years, with the increase in the number of quality-guaranteed fans produced by major complete machine manufacturers, the demand for technical transformation and upgrading in the post wind power market has increased explosively. From the perspective of maximizing the owner's income, the overall improvement plan for the safety and efficiency of the wind farm is proposed.  The overall improvement plan is mainly divided into four parts, namely: the safety performance improvement of wind turbines; data analysis and pre-diagnosis; fault handling system upgrade; power generation increase. The four parts can be carried out independently, but they do not exist completely independently. They are interrelated and organically unified. The owner has strong demand for the improvement of fan safety performance and power generation. Now data analysis, pre-diagnosis and fault handling system upgrading can not only help owners understand the operation of wind farm and improve operation and maintenance efficiency, but also promote wind turbine safety performance and power generation, which is realized by more and more owners. At present, there are many manufacturers providing technological transformation programs for the aftermarket of wind power,, but some companies inevitably have follow-up hidden dangers due to the small number of technical teams, strong professionalism but not comprehensive enough. For example, there is no ability to check and verify the load of the whole machine while improving the power generation of the fan, high voltage ride through and pitch system, which may affect the safety of the fan in its life cycle. Therefore, it is necessary for the owners to carefully choose the technological transformation plan.

  Globally, billions of lightning strikes occur every year. If the electric vehicle is charging when a nearby lightning strike occurs, it is very likely to cause damage to the electric vehicle. This is because the conventional dielectric strength of electric vehicles only reaches 2500V, but when a lightning strike occurs, a high voltage of 20 times this will be generated. As an expert in lightning protection, surge protection, and safety equipment, Jinli Electric provides support for the sustainable development of the electric vehicle industry and protects your investment by providing comprehensive protection devices.

  At the 2021 annual meeting of the International Electrotechnical Commission IEC/SC37A "Low Voltage Surge Protective device (SPD)" held a few days ago, Chinese first international standard proposal in the field of IEC low voltage surge protective devices was approved, and its name and number are: IEC TS 61643-05 "Low voltage surge protective devices-Part 05: Monitoring device of Surge protective devices (MDS)-Requirements and test methods".   Based on China's technical accumulation and long-term practice in the field of intelligent SPD, the project is a technical specification formulated for the main component of intelligent SPD - surge protector monitoring device. The main technical contents include: monitoring the performance index and working state of surge protectors (SPD), the performance requirements and test methods of the monitoring device (MDS) that communicates with the host computer.   The successful establishment of this international standard not only indicates that China's low-voltage surge protector technology has gained a leading position in the international standard, but also shows that the intelligent SPD products developed and marketed by Chinese manufacturers have been recognized by the international market. The standard will not only improve the technical response ability of China's lightning protection industry in the international trade market, but also become an important milestone for China to use advanced technology to ensure lightning protection public safety. Anhui Jinli Electric Tech. Co., ltd is a member unit of the National Lightning Arrester Standardization Technical Committee and the Sensitive Technology Branch of the Chinese Institute of Electronics, and pays close attention to the revision of IEC standards.

  Until August 26, 2021, many global mainstream distributed inverter brands such as Sungrow, Growatt, Ginlong (Solis) Technologies, Huawei, Aiswei, Goodwe, Hopewind, etc. have issued a statement that high current series inverters used in distributed scenarios have been fully marketed, and work together with ultra-high power modules to speed up distributed photovoltaic projects and reduce the hourly power cost, build a new ultra-high power distributed ecosystem to achieve more stable system and more power generation. With the advent of the era of affordable photovoltaics, the investment yield of new projects has become more challenging. Therefore, it is imperative to reduce the cost of photovoltaic systems and increase power generation.   At present, total 15 inverter manufacturers at home and abroad have distributed inverters matching 210 high-power modules in supply.  Anhui Jinli Electric Technology Co., Ltd., a leading lightning protection solution supplier in the photovoltaic industry, escorts the safe operation of the inverter. Further contribute to the realization of "carbon peak and carbon neutrality" and jointly build a community of human and natural life.