July 29-30, 2021, the first (2021) national wind power technology transformation annual meeting was successfully held in Beijing, Heilongjiang Hengdian Lightning Protection Engineering Co.
Ltd. of Heilongjiang Province Hengdian Lightning Protection Engineering Co. 2 wind power lightning protection projects, "Diaoyutai Wind Farm complex terrain mountain tower lightning protection problem investigation technical reform results" and "Liangfeng Ya Wind Farm high altitude rocky collector line lightning protection grounding technical reform results" at the same time won the wind power technology transformation technology achievement award.
Yangtze Evening News (Correspondent: Xu Boshen) recently. Xu Boshen graduated from the University of Washington in the United States and is a technical person who has returned from studying abroad. Mr. Xu has visited dozens of wind farms in recent years and participated in more than a dozen wind power renovation projects, responsible for the technical and renovation aspects of the work, and has extensive experience in wind farm renovation. He has in-depth communication with many new energy power generation enterprises, wind farm operation and maintenance units, and field team members, and deeply understands the needs and related pain points of each position member of power generation enterprises, and is able to conduct effective technical communication and consulting docking. He also has unique insights into the common lightning protection problems of wind farms, and has rich theories and technologies.
Introduction to the results of lightning protection technology renovation of towers in complex terrain and mountainous areas of Diaoyutai Wind Farm.
Main construction unit. Heilongjiang Hengdian Lightning Protection Engineering Co.Ltd. and Heilongjiang Hengdian Lightning Protection Engineering Co., Ltd. jointly conducted a systematic analysis and research on the complex distribution environment of collector lines in Diaoyutai Wind Farm, frequent tripping phenomenon, irregular distribution of terrain and landscape where the pylons are located, and uneven distribution of soil resistivity and other problems, and made a targeted transformation. Both sides cooperate, through the investigation of the site situation, record analysis and grounding resistance detection and resistivity subtraction, determine the root cause of tripping is the impact grounding resistance is too large resulting in the reversal.
The renovation targeted to the whole line of pole tower grounding to do a transformation, focusing on strengthening the ground network impact resistance, through flexible grounding technology to the ground network within the effective range of the environmental structure of fundamental adjustment, so that its impact resistance greatly enhanced, the ability to absorb lightning charge greatly enhanced, so that lightning overvoltage significantly reduced.
After the transformation, running for more than a year without another lightning trip, verifying the effectiveness of the work of both sides, confirming the accuracy of the problem judgment, the measures taken properly, and achieved satisfactory results. At present, the line not only runs stably, but also saves a lot of maintenance costs for the country, and also greatly reduces economic losses.
Liang Feng Ya wind farm high altitude rocky terrain collector line lightning protection and grounding technology transformation project
Main construction unit. Heilongjiang Hengdian Lightning Protection Engineering Co.
Ltd. and Heilongjiang Hengdian Lightning Protection Engineering Co., Ltd. jointly use flexible grounding technology and flexible grounding materials to effectively solve the problem of high grounding resistance and frequent tripping caused by lightning strikes in the high altitude (above 3,000 meters above sea level), strong thunderstorms, rocky terrain and other harsh environments of Liang Feng Ya wind farm, fundamentally improving the impact resistance of the ground network, thereby reducing lightning strikes and tripping and enhancing operational stability.
Flexible grounding technology is an emerging grounding technology with national invention patent and U.S. invention patent, using new materials and advanced grounding network formation method. This technology overcomes the traditional grounding method accompanied by the grounding resistance instability caused by the grounding system in the harsh environment and the use of lightning shock state of the grounding network is not effective and short life and other problems. Flexible grounding body is a new type of grounding body material composed of non-metallic conductive material, electrolyte material, anti-corrosion factor and structural material. From the material molecular structure level greatly enhanced the charge storage and lightning current discharge capacity, significantly reduce the frequency and impact of grounding resistance.
The award-winning project tested the remarkable effect of the new technology - flexible grounding body in the process of use, greatly reducing the lightning strike trip rate, flexible grounding body has a strong economic applicability, in the overall cost does not exceed the conventional program budget, the safety and stability of wind farm operation has brought a substantial increase, through the material itself corrosion resistance to extend the life of the grounding network, greatly reducing the operation and maintenance cost. Heilongjiang Hengdian Lightning Protection Engineering Co., Ltd. will continue to study the problems and solutions of wind farms in depth and contribute to the cause of wind power!