Core Viewpoint - The successful operation of China's first "integrated wind-solar-fire-storage" transmission project marks a significant advancement in the country's high-voltage direct current (HVDC) technology, showcasing the development of intelligent protection systems for power grids [1][4]. Group 1: Historical Context and Development - In the 1970s to 1990s, over half of the stability issues in China's power grid were attributed to relay protection defects, with high-end protective equipment being largely imported and costly [2]. - Zheng Yuping, a key figure in the development of relay protection technology, has dedicated over 40 years to advancing this field, transitioning from reliance on foreign technology to achieving self-sufficiency and innovation [2][8]. Group 2: Technological Innovations - Zheng's team developed a high-sensitivity directional protection method for high-voltage lines, leading to the creation of complete protective devices for ultra-high voltage transmission lines, generating over 5 billion yuan in value [2][3]. - The team achieved a market share of over 60% in the large-capacity generator transformer protection market, with products exported to over 20 countries [3]. Group 3: Challenges and Solutions - The complexity of modern power grids presents new challenges for traditional protection technologies, necessitating innovative solutions to ensure safety and reliability [4][5]. - Zheng's team established a differential protection technology system to address the evolving characteristics of complex grid faults, significantly enhancing fault identification and response times [4][5]. Group 4: Future Directions - With the rise of new energy systems, there is a pressing need for updated relay protection technologies to adapt to changing fault characteristics [7]. - Zheng proposed a new relay protection principle based on time-domain equivalent models, aiming to create a system that does not rely on power source characteristics, which is currently being applied in various modern energy scenarios [7].

新型电力系统专家访谈 20250608 摘要 2025 年预计新增风光装机约 300GW，光伏约 200GW，风电约 80- 90GW，机制电量比例约一半，工商业用电量上涨一厘钱，价差可维持 3-4 分，投资预期稳定。 2026 年后集中式电量规模缩小，非水可再生能源消费比重提升空间小， 若提高到 30%，每年支撑 70-80GW 装机，建设电量规模可能缩水一半 以上，投资预期风险增大。 新增新能源项目电价下调 3-5 分，内部收益率下降 1.5-2 个百分点。三 北地区平均收益率约 6.5%，中东部地区可能回归到 7%-8%左右水平。 1-4 月光伏装机约 100GW，预计 5 月底达 140GW。下半年新增装机 量可能减少，分布式光伏新增量或更少，基地配套项目继续建设。 新能源入市比例 2024 年为 50%，2025 年达 100%。根据 136 和 531 文件，无论存量还是增量项目都需全部入市，但有最低保障价格，2030 年全面市场化。 电网投资额预计创新高，年初预算提升 8%，基建投资超 6,600 亿，增 幅约 10%。配网投资将提升极端天气下的可靠性，改善薄弱区域，更新 老旧设备。 今年夏季用 ...

美能源高管：美国输电基建滞后将拖累AI竞赛 金十数据6月7日讯，乌裔美国企业家、能源开发商Invenergy首席执行官Michael Polsky发出警告称， 如果美国不 紧急对陈旧的输电基础设施进行现代化改造，就有可能在全球人工智能竞赛中落后。他的公司正准备动工建设一 条800英里长的高压输电线路，该线路旨在将5吉瓦电力（相当于五座核反应堆的发电量）从堪萨斯州输送到美国 东部（如图），连接多个区域电网，为数据中心和陆上制造业供电。他表示，特朗普曾发布行政命令，表明美国 面临能源紧急状况，我确实认为这是紧急情况，因为建设相关设施非常困难。他还补充说："我们没有几十年的时 间来解决这个问题，我们只有几年时间。" 查看一下美国输电线路图就会清楚一件事： 这将需要大量的铜。看好 铜价的人深知这一点…… 他认为，能源基础设施开发商需要得到与马斯克的太空项目同等程度的联邦支持，强调 迫切需要建立一个类似于国家高速公路系统的国家输电管理机构来建设高压输电线路。 ...

Group 1 - The event held by the State Council Information Office focused on the theme "Craftsman Spirit to Support National Construction," highlighting the importance of skilled workers in various industries [1] - Workers from major state-owned enterprises shared their experiences and achievements, emphasizing the need for precision and innovation in manufacturing and engineering [1][2] - The representatives showcased their contributions, such as solving technical challenges and developing new methods, which are crucial for advancing China's industrial capabilities [2][3] Group 2 - The aerospace industry is pushing for micro-level precision in liquid rocket engine manufacturing, with workers like He Xiaohu solving 75 production challenges and applying for 25 patents [1] - In the power sector, advancements in high-voltage transmission technology are being driven by workers like Li Min, who has completed over 120 live-line maintenance tasks and led innovations in drone inspections [2] - The railway industry is represented by Yao Zhihui, who has been integral to the high-speed rail assembly process, ensuring zero defects through strict adherence to operational standards [3]

长江商报消息 ●长江商报记者 张璐 风范股份（601700.SH）又揽大单。 国家电网订单密集落地 进入2025年，风范股份国家电网订单密集落地。 6月3日，风范股份发布公告，在国家电网有限公司2025年第十五批采购（特高压项目第二次材料招标采 购）活动中，公司为包9、包39、包55的中标人，中标金额约2.28亿元，约占公司2024年经审计营业收 入的7.08%。 长江商报记者注意到，这已是公司2025年以来第二次披露特高压项目中标信息。 6月3日，常熟风范电力设备股份有限公司（下称"风范股份"）公告，公司成为国家电网有限公司2025年 第十五批采购（特高压项目第二次材料招标采购）中包9、包39、包55的中标人，中标金额约2.28亿 元，约占公司2024年经审计的营收的7.08%。 风范股份表示，该项目的中标预计将对公司经营业绩产生积极影响，但不影响公司业务的独立性。 长江商报记者注意到，这已是公司2025年以来第二次披露特高压项目中标信息。3月11日，公司宣布预 中标2.51亿元国家电网项目，两次累计中标金额达4.79亿元，占2024年全年营收的14.84%。 值得注意的是，研发创新是风范股份的发力重点。财 ...

Core Viewpoint - The completion and commissioning of China's first large-scale integrated energy base project, the Longdong to Shandong ±800 kV UHVDC project, will significantly enhance the transmission of renewable and conventional energy from Gansu to Shandong, supporting energy resource optimization across regions [1][3]. Group 1: Project Overview - The UHVDC transmission line spans 915 kilometers, starting from Gansu and passing through Shaanxi, Shanxi, and Hebei, ultimately reaching Shandong [3]. - The project includes the construction of two converter stations in Gansu and Shandong, with a transmission capacity of 8 million kilowatts, capable of delivering over 36 billion kilowatt-hours of energy annually, sufficient to power over 10 million households for a year [3]. Group 2: Energy Composition - The total energy transmitted includes wind, solar, thermal, and storage power, with green energy accounting for half of the total [3]. Group 3: Strategic Importance - The project supports the development of large-scale wind and solar energy bases and their associated UHV projects, addressing the energy shortage in North China while optimizing the rich energy resources in the western regions [5]. Group 4: Environmental Considerations - To minimize the impact on native vegetation during construction, the project utilized a 2.07-kilometer freight cableway and detachable rotary drilling rigs, which were transported and assembled on-site [11]. - The construction team plans to replant 32 hectares of trees and sow 40 hectares of grass seeds in the areas affected by the construction of five transmission towers in the ecologically sensitive Ziwuling region [9][15].

Core Viewpoint - The global power system is facing new challenges, leading to an increased demand for grid expansion and upgrades, which is expected to directly benefit the power equipment industry [1] Group 1: Main Grid Developments - The demand for ultra-high voltage (UHV) construction is increasing due to the growth of inter-provincial electricity flow and the pressure of renewable energy consumption. As of December 2024, China has built and put into operation 41 UHV transmission lines, including 20 AC lines and 21 DC lines [2] - During the 14th Five-Year Plan period, China is expected to start construction on "three AC and nine DC" UHV lines, with over 20 lines anticipated to be operational in the 15th Five-Year Plan period, which will boost demand for related equipment [2] - Flexible DC technology is expected to become mainstream due to its advantages in large-scale renewable energy transmission, especially as the prices of core components like IGBT decrease. Investment in this area is projected to reach 380 billion yuan from 2021 to 2025 [2] Group 2: Distribution Network Developments - Both domestic and international plans for distribution network upgrades are expected to increase demand for transformers. China emphasizes high-quality development in distribution networks, while the EU plans to invest 584 billion euros for grid modernization [3] - China's transformer production accounts for 35% of the global market, and with overseas production facing constraints, there is an opportunity for Chinese companies to benefit from rising global demand [3] Group 3: Investment Recommendations - The emergence of new electricity consumption scenarios, represented by computing power, is driving greater electricity demand and necessitating grid upgrades. The main grid sector is expected to benefit from the acceleration of UHV construction and the growing number of flexible DC projects [4] - The distribution network sector is also poised for growth due to ongoing domestic upgrades and strong overseas demand for transformers. Companies such as Huaming Equipment, Haixing Electric Power, and others are recommended for investment [4]

电力设备 | 证券研究报告 — 行业专题 2025 年 5 月 8 日 强于大市 电力设备系列报告之一 电网升级改造拉动需求，产业链有望受益 随着全球新能源装机比例提升以及算力等新型用电场景的不断涌现，对于电 网的扩容升级提出了更高的要求，电力设备有望直接受益。主电网方面，电 力跨区域传输以及新能源发电外送需求提升推动特高压建设，柔性直流技术 有望提升渗透率；配电网方面，国内配网改造提速，海外纷纷推出电网改造 计划，对于变压器的需求提升，产业链有望受益，维持行业 强于大市 评级。 支撑评级的要点 投资建议 以算力为代表的新型用电场景不断涌现，催生出更大的用电需求，也对电网 升级扩容提出更高要求。主电网方面，新能源发电外送推动特高压建设提速， 直流特高压开工条数增长，柔性直流特高压具备优势，随着 IGBT 成本降低有 望逐步提升渗透率，相关产业链企业有望受益。配电网方面，国内持续推动 配电网改造，海外电网改造需求旺盛，对于变压器有较大需求。建议关注受 益于特高压高景气的主网环节相关标的，以及具备出海逻辑的变压器环节。 推荐华明装备、海兴电力，建议关注中国西电、国电南瑞、思源电气、平高 电气、明阳电气、四方股份、 ...

也许你认识她。隔壁车间的大姐，总是第一个到岗，仔细巡检设备，认真记录数据，生怕错过任何一个 细节，数十年如一日。 也许你了解他。平凡的工作经历中，写满对脚踏实地的认知、坚持到底的体会、不断学习的感悟，这些 质朴的思考，也曾触动你探寻人生的意义。 也许你就是他。岁月飞逝，褪去了参加工作时的青涩懵懂，你从一名新手成长为技术骨干，但对理想的 坚持没有改变，对工作的热情始终如一。 "爱岗敬业、争创一流"是他们奋斗的底色，"艰苦奋斗、勇于创新"是他们不变的情怀，"淡泊名利、甘 于奉献"是他们动人的品格，他们有着一个共同的名字——劳动模范。 4月28日，庆祝中华全国总工会成立100周年暨全国劳动模范和先进工作者表彰大会在北京人民大会堂隆 重举行，河南省共有100名全国劳动模范和先进工作者受到表彰。 当鲜花、掌声和闪光灯迎向他们，我们看到了结实的双手、质朴的脸庞、自信的眼神，更见证了在平凡 岗位上，用点滴汗水浇灌出的"劳动之花"，让人生绽放出动人光芒。 执着 数载春秋守初心 蹬上导电鞋，套上屏蔽服，戴好屏蔽手套，全国劳动模范、国网河南省电力公司超高压公司输电运检部 五级职员陶留海乘坐电动升降装置爬上距地面70米的高空，为超 ...

新华社北京4月29日电（记者沈寅飞）近年来，跨区域电力资源配置在能源供应保障、绿色转型中发挥着日益重要的作用，在缓解区域间电力 资源分布不均问题的同时，也为清洁能源消纳提供了更广阔的市场空间。多地通过建设特高压输电线路、开展跨省跨区电力交易等方式引入外 部清洁电力，保障本地用电更加安全、可靠、绿色。 2024年底，我国西南地区首个特高压交流工程——川渝特高压交流工程正式建成投运。来自甘孜地区的清洁电能直送成渝负荷中心，年输送电 量最大达350亿千瓦时。目前，阿坝—成都东1000千伏特高压交流工程正加快建设，预计2026年12月建成送电。这将推动形成以甘孜、阿坝地 区的清洁能源为电源点，以天府南、成都东、重庆铜梁为受端站的1000千伏特高压交流网架结构，川渝电网结构与用能需求匹配将更加精准， 电网可靠性也将提升。 此外，甘肃巴丹吉林沙漠基地送电四川、南疆送电川渝等输电通道工程建设预计将在年内核准开工，来自西北的清洁电能将为四川电力保供和 电网结构优化提供进一步支撑。 上海也一直精心谋划"外电入沪"。从上世纪±500千伏葛南直流输电线路投运，到±800千伏复奉特高压直流输电示范工程送电，再到1000千伏皖 电东送 ...