在"宁电入湘"工程的受端衡阳换流站，就有14台由国内企业特变电工自主研制生产的高端换流变压器， 这也是我国首批实现独立设计、独立采购、独立制造的高端换流变压器。 据介绍，在研制过程中，特变电工从制造精度、安装标准及环境适应性等20多个方面对产品进行了技术 提升。将网线圈焊点从传统的450多个减至42个，焊点操作可靠性提升10倍，使得最终设备结构更紧 实，抗短路能力大幅增强。通过铜磁复合屏蔽、油路优化等技术实现低损耗设计，将行业平均40K的温 升控制在了35K以内，极大地延长了设备使用寿命。 中新网北京8月20日电 (记者 王梦瑶)8月20日，宁夏至湖南±800千伏特高压直流输电工程(以下简称"宁电 入湘"工程)全面投产送电。该工程额定最大送电能力800万千瓦，每年可向湖南输送电量360亿至400亿 千瓦时，"超级工程"的安全运行离不开背后"超级装备"的硬核保障。 "宁电入湘"工程始于宁夏回族自治区中卫市中宁换流站，一路途经甘肃、陕西、重庆、湖北四地，最终 抵达湖南省衡阳市衡阳换流站，线路全长1616千米，总投资达281亿元。由于工程线路跨度大，且沿途 地理环境复杂多样，施工过程中面临着诸多严峻挑战。 高端换流 ...

Core Insights - The "Ningdian Ruinxiang" project is expected to significantly enhance electricity supply in Hunan province during the summer peak, with a maximum load forecasted to exceed 50 million kilowatts, representing an 8.4% year-on-year increase [1] - The project will contribute to the local economy by accelerating the release of benefits from the renewable energy industry chain, benefiting upstream, midstream, and downstream companies [1][2] - The project is set to achieve a transmission capacity of 8 million kilowatts and an annual transmission volume of 40 billion kilowatt-hours, accounting for 16% of Hunan's annual electricity consumption [1] Upstream Industry - The "Ningdian Ruinxiang" project breaks the bottleneck of renewable energy generation in western regions, allowing for increased production of renewable energy generation equipment [2] - Companies involved in renewable energy equipment manufacturing are expected to ramp up production to support projects in regions like Xinjiang, Qinghai, and Gansu [2] Midstream Industry - The project has prompted transmission and transformation equipment manufacturers to follow the bidding steps of the State Grid, aiding in the construction of power channels in central and western China [2][3] Downstream Industry - Electricity supply from the "Ningdian Ruinxiang" project allows downstream companies, such as Hunan Hualing Steel and SANY Heavy Industry, to significantly reduce energy costs and improve carbon emission performance [3][4] - SANY Heavy Industry is utilizing green electricity from the western regions to replace traditional coal power, leading to a notable decrease in carbon emissions during production [4] Equipment Supply - TBEA Co., Ltd. is a key supplier for the "Ningdian Ruinxiang" project, providing essential equipment such as high-end converter transformers and high-voltage capacitors [3] - The company has achieved a 100% first-time test pass rate for its delivered equipment, ensuring the project's operational reliability [3]