On July 29, 2023, the new product appraisal meeting for "XGNS6-72.5 Gas Insulated Metal Enclosed Switchgear" of Ningbo Nesen Electric Technology Co., Ltd. was successfully held in the company's administrative building conference room.
This appraisal meeting was organized and held by the Ningbo Municipal Bureau of Economy and Information Technology. Seven experts, professors, and two user representatives from Zhejiang University Ningbo Institute of Technology, Ningbo Intelligent Manufacturing Association, China National Machinery Science Research Institute Southern Center, Ningbo Vocational and Technical College, Cooper (Ningbo) Electric Co., Ltd., Xiangshan County Transmission and Distribution Industry Chamber of Commerce, Ningbo University Architectural Design Institute, and other units attended the meeting, Zhang Hui, Chairman of Ningbo Naisen Electric Technology Co., Ltd., Chen Rong, General Manager, Zhu Peilong, Chief Engineer, and Ou Lili, Manager of the Technical Department, and other key personnel from the company attended the meeting.
During the review period, the experts of the appraisal committee carefully listened to the project background, technical and economic analysis report, trial production summary, product testing, user use, and novelty search reports of the company's new product "XGNS6-72.5 Gas Insulated Metal Enclosed Switchgear", reviewed relevant materials, and conducted detailed reviews, inquiries, and discussions based on the target requirements, and compared to the existing international, national, and industry standards of the product, The expert group provided professional guidance on the new product, fully demonstrated the technical indicators, and proposed improvement suggestions. During the interval of the meeting, we visited the new product "XGNS6-72.5 Gas Insulated Metal Enclosed Switchgear" of this appraisal meeting, and also inspected the production process, equipment and facilities, working environment, etc. Based on the actual situation, the experts put forward many valuable opinions and suggestions. Finally, experts unanimously believe that the main technical performance of the product has reached the international advanced level.
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Against the backdrop of dual carbon emissions, offshore wind power is experiencing significant development. As the single unit capacity of wind turbines continues to increase, the transmission capacity of 35kV collector lines and submarine cables can no longer meet the requirements, and offshore wind farms will gradually adopt a 66kV collector scheme. After more than 2 years of technical research, our company successfully developed a prototype of our product in September 2022, obtained 2 authorized invention patents, and was listed as a key technology research and development project in Ningbo for the year 2023.
XGNS6-72.5 is mainly used for the connection between the step-up transformer and the wind turbine power cable, for the switching, control, and protection of the electrical main circuit incoming line of the wind turbine. The equipment is generally installed on the platform inside the wind turbine tower. The characteristics of this product:
1. Micro positive pressure stainless steel gas box structure;
2. Three electrical circuits are shared in a box, with a compact structure and small volume;
3. The cable sides of the three electrical circuits are equipped with fast grounding switches;
4. Integrated operation panel, with intuitive instructions and convenient operation;
5. Corrosion resistance, salt spray resistance, vibration resistance, anti sway, meeting the requirements for offshore wind power operation environment.