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On October 26th, the “±320kV XLPE Insulated DC Power Cable†independently developed by Zhongtian Science & Technology Marine Cable Co., Ltd. successfully passed the expert appraisal meeting for new products hosted by Jiangsu Economic and Information Technology Commission. China's first ±320kV high-voltage DC cable system was successfully developed by Zhongtian Technology. At the same time, experts identified “±200kV cross-linked polyethylene insulated fiber composite DC submarine power cable†and “three-core 110kV cross-linked polyethylene insulated fiber Composite submarine power cable "two new products.
The Expert Committee of Experts, a senior expert in the field of high-voltage cables, led by Prof. Yang Liming, senior engineer, agreed that Zhongtian Science and Technology Marine Cable Co., Ltd. has conducted research on the selection of insulating materials based on the spatial electric field and temperature electric field characteristics of DC conductance. Conducted research on structural simulation with independent innovation, verification of degassing process, technical research on factory joints, pressure test of large-length DC cable, etc. The product has excellent electrical and mechanical properties, and has high-voltage DC cables and three-core AC submarine cables. Strong R&D strength, solid mass production supply capability.
The comprehensive technical performance of the three new products has reached the international advanced level of similar products, filling the gaps in the country, can replace imports, promote the progress of China's cable industry technology, and promote China's long-distance low-loss power transmission technology.
Moreover, the identification of ultra-high voltage DC, AC submarine cable, and land cable products has also attracted the attention of senior experts in the high-voltage cable industry. The appraisal committee includes China Electric Power Research Institute, State Grid Electric Power Research Institute, China Southern Power Grid Scientific Research Institute, Shanghai Cable Research Institute, Shanghai Jiaotong University, National Wire and Cable Quality Supervision and Inspection Center, Electric Power Industry Electrical Equipment Quality Inspection and Testing Center, and China Hydropower Advisory Group East China Investigation and Design Institute, Fujian Yongfu Engineering Consultant Co., Ltd., State Grid Beijing Electric Power Economic Technology Research Institute, Guangdong Power Grid Corporation, Fujian Electric Power Co., Ltd., China Three Gorges New Energy Corporation, Huaneng New Energy Co., Ltd., China Guangdong Nuclear Power Wind Power Nearly 20 experts and leaders, such as the Limited Company and China Electric Power Technology Equipment Co., Ltd.
Zhongtian Science and Technology Cable Co., Ltd. Xue Jianling, general manager, introduced that Zhongtian Technology seized the opportunity of development, adhering to the strategic culture of “scientific and technological innovation and fine manufacturingâ€, and had achieved R&D and large-scale production of high-voltage DC cable serialized products, and continued to make breakthroughs. Relying on the South-South Nan'ao Island 863 Program “Large Wind Farm Flexible DC Transmission Access Technology R&D†project, it has undertaken the development of China’s first “±160kV fiber composite DC submarine cableâ€; relying on the State Grid “Zhoushan multi-terminal flexible HVDC transmission demonstration project†It has undertaken the development and supply of “±200kV optical fiber composite DC submarine power cable†with the longest distance and largest cross section in China.
Zhongtian Technology is the first company in China to successfully develop a ±320kV high-voltage DC power cable with the highest voltage rating and the largest transmission capacity in the world for flexible DC transmission. It is the only company in China that has passed the national wire and cable quality inspection center and the quality of electrical equipment in the power industry at the same time. Testing center two companies full-performance type testing company. This fully verified the correctness of the process route and product reliability of the ±320kV high-voltage DC power cable system.
The technical R&D team headed by Prof. Xie Shuhong, Chief Engineer of Zhongtian Technology Group, believes that with the large-scale construction of offshore wind power development, offshore oil and gas platform centralized power supply and island power interconnection projects in China, the use of power cables for long-distance transmission More and more demand. "At present, the use of single-core or three-core 220kV AC submarine cable, three-core 110kV AC submarine cable, ±320kV or ±200kV DC submarine cable is a realistic and feasible three options." Zhongtian Technology has released a series of new products to provide a series of ultra-long-distance power transmission solutions for the development of DC transmission technologies and the construction of a new generation of DC transmission network projects. It is of great social and economic importance to meet the needs of China's new energy and marine development. .
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