"作为特高压设备中的'高精尖'产品，高端换流变压器是特高压直流输电工程的'核心心脏'，在电力跨区 域传输中承担着交直流转换'枢纽'和电压与功率'调节器'的作用。"特变电工相关负责人介绍，在"宁电 入湘"工程的受端衡阳换流站，高端换流变负责将高压直流电逆变为交流电，匹配衡阳本地电网电压等 级，实现与用户端的无缝衔接，承担着绿电转化的核心使命。 据介绍，±800千伏高端换流变压器，每台高达14.8米(约四五层楼)，重达570吨，长26.5米，宽8.4米，拥 有完全自主知识产权。这14台"巨无霸"，像威风凛凛的将军，保证了电力源源不断地供给湖南。 业内人士指出，"宁电入湘"工程全线竣工后，不仅将满足湖南用电需求、优化能源结构，更推动宁夏清 洁能源大规模外送，实现跨区域能源优化配置。 人民网北京8月20日电 (记者夏晓伦)8月20日，我国首条"沙戈荒"风电光伏大基地外送特高压通道 ——"宁电入湘"工程实现整体竣工，正式具备800万千瓦满负荷送电能力。该工程构建起新能源供给消 纳体系样板，每年可向湖南输送超360亿千瓦时清洁电力。 据了解，"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 ...

Core Viewpoint - The completion of the "Ning Electric into Hunan" project marks a significant milestone in China's renewable energy infrastructure, enabling the transmission of over 36 billion kilowatt-hours of clean electricity annually to Hunan province [1][2]. Group 1: Project Overview - The "Ning Electric into Hunan" project is China's first "Shagohuang" wind and solar power base external high-voltage transmission channel, with a total investment of 28.1 billion yuan [1]. - The project spans 1,616 kilometers, starting from the Zhongning converter station in Ningxia and passing through Gansu, Shaanxi, Chongqing, and Hubei before reaching Hengyang in Hunan [1]. - The project is designed to have a full-load transmission capacity of 8 million kilowatts [1]. Group 2: Technological Innovations - The company has implemented digital quality management throughout the entire process of high-end converter transformer production, achieving a 100% qualification rate for batch production [2]. - The company has developed or optimized various products tailored to the project's specific geographical and climatic conditions, including steel-core aluminum stranded wire and epoxy resin-impregnated paper capacitive DC bushings [2]. Group 3: Economic and Social Impact - The project not only meets its economic and social objectives but also enhances the capabilities of the team involved, leading to technological advancements and the development of new products [2]. - The successful execution of such large-scale power engineering projects serves as a reference for the high-quality development of the power equipment industry in China [2].

Core Viewpoint - The Ningxia-Hunan ±800 kV UHVDC project has been put into operation, serving as a crucial channel connecting the abundant renewable energy resources in the western region with the load centers in central China, significantly enhancing energy supply security and promoting the optimization of clean energy distribution [2][4]. Group 1: Project Overview - The Ningxia-Hunan project has a rated voltage of ±800 kV and a capacity of 8 million kW, spanning 1,616 kilometers with a total investment of 28.1 billion yuan [4]. - It is the first UHVDC project approved to primarily transmit renewable energy from the "Shagao" wind and solar base and is the third UHVDC project to be put into operation this year [4]. - The project is expected to deliver over 36 billion kWh of electricity annually to Hunan, with more than 50% coming from renewable sources [5]. Group 2: Economic and Social Impact - The project will significantly enhance Hunan's electricity supply, increasing its external electricity capacity to 16 million kW and providing about one-sixth of the province's power needs [5]. - It is anticipated to drive investment exceeding 70 billion yuan in Ningxia, positively impacting local infrastructure and related industries, thereby stabilizing supply chains and employment [6]. - The project supports the development of high-energy industries in Hunan, such as advanced manufacturing and data centers, optimizing the business environment [6]. Group 3: Technological Innovation - The project has achieved a series of standardized results, including over 5,500 typical drawings and the establishment of various national and industry standards [7]. - It has successfully implemented domestic manufacturing of all equipment, marking a significant advancement in the quality of domestic components used in UHVDC technology [7]. - The project exemplifies the integration of advanced technology in the construction of UHVDC lines, addressing challenges related to safety and reliability in complex environments [7].

2024 年以来全社会用电量同比增长，电源、电网持续保持较大的投 资规模，随着电力行业加快新型能源体系和新型电力系统构建，新能源新 增装机成为绝对主体，重点输电通道建设稳步推进，产业链带动效果显 著。特高压、清洁能源大基地建设以及省间互联通道开展规划和建设需求 仍将持续，智能变配电将迎来新机遇。同时，上下游产业链完善度逐步提 升，供给与需求体量逐渐增大，与当前国际能源局势、国家能源战略具有 密不可分的关系，特朗普再次当选或将推动国家能源战略加速发展。预计 2025 年电力、电气设备制造行业景气度仍将持续，展望为稳定。 · 2025 年电力、电气设备制造行业分析 联合资信 工商评级三部 www.lhratings.com 研究报告 1 一、行业运行情况回顾 电力、电气设备制造行业作为国民经济发展中重要的装备工业之一，2023 年以 来，全社会用电量稳步提升，电力行业加快新型能源体系和新型电力系统构建；电源、 电网持续保持较大的投资规模，投资增速创新高，新能源新增装机成为绝对主体，重 点输电通道建设稳步推进，电力设备制造行业外部发展环境良好。 电力、电气设备制造行业作为国民经济发展中重要的装备工业之一，行业景气度 ...