电网升级改造
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秋检护航电网安全:电力人的攻坚时刻
Zhong Guo Jing Ji Wang· 2025-11-24 05:02
在更换过程中,检修人员需要先拆除旧设备,然后再安装新设备并进行调试和试验,每一个步骤都 需要精心操作,确保万无一失。检修人员仔细研究设备图纸,严格按照操作规程进行拆卸安装。 "设备安装精度要求很高,任何一点偏差都可能影响设备的正常运行,我们一定要确保安装到 位。"一位经验丰富的老师傅对旁边的同事说道。新设备投用后,将大大提高变电站的安全运行水平, 为电网的安全稳定运行提供有力保障。 220千伏大竹林变电站是市北电网重要枢纽,本阶段改造将持续一个月左右,整体工程将于年底前 完成,改造范围包括气动机构断路器、刀闸、互感器更换,防腐处理,改造后将大幅提升设备稳定运行 可靠性,增强电网迎峰度冬的能力。 跋山涉水保障"大动脉"畅通 深秋时节,寒意渐浓,城市与乡村的灯火依旧温暖明亮。然而,在两江大地,一场电网"秋检"的战 役正在紧张而有序地进行。变电站内、铁塔之下、线路旁边,到处都活跃着电力人忙碌的身影,他们用 专业与责任,为电网安全筑起一道坚实的防线。 精密手术强健电网"关节" 清晨,第一缕阳光还未完全驱散晨雾,220千伏大竹林变电站内已是一片忙碌景象。检修人员手持 各种专业工具,紧张地忙碌着。断路器更换是当前的重点工 ...
河南主干电网“强筋健骨”暖寒冬
He Nan Ri Bao· 2025-11-22 23:21
全力推进精益化秋检的同时,强力推动电网升级改造。今年以来,该公司组织人员提前介入新建、扩建 项目筹建,深度参与可研初设、设备进场、安装调试、设备验收等全过程、各环节,确保工程质量全面 过硬;精心编制"四图两表一卡",明确细化投运流程与操作步骤,确保规范操作无偏差、任务执行无遗 漏。潞南、旺河输变电工程、商丘断面加强工程等18项新建、扩建项目的验收投运工作圆满完成,为河 南主干电网变电容量的持续突破与电网结构的优化升级奠定了坚实基础。 责任编辑: 郭栩汝 11月6日23时36分,随着驻马店西500千伏输变电工程旺2号主变压器一次充电成功,河南第54座500千伏 变电站——旺河变电站成功投运,河南500千伏变电总容量突破1亿千伏安,主干电网500千伏"鼎"字形 骨干网架日趋完善,为今冬明春电力可靠供应注入了强劲动能。 秋季检修是给电网设备"把脉问诊",以消除夏季高负荷运行后的缺陷隐患,为冬季稳定运行夯实基础。 今年,国网河南超高压公司共安排秋季检修234项,其中包括500千伏邵陵调相机站年检、玉都变电站玉 3号主变GOE套管隐患治理、500千伏仓颉变电站综合检修等重点项目。 受冷空气影响,今年冬季我省低温雨雪天气 ...
四点半观市 | 机构:AI资本支出将推动大宗商品需求超预期
Sou Hu Cai Jing· 2025-11-19 08:26
沪指震荡收涨0.18% 银行与石油石化板块领涨;黄金股ETF涨4.79%;工业硅、多晶硅日间盘涨幅居前;中证转债指数收涨0.24%。瑞银财富管理:AI发展 与能源创新密不可分;巴克莱:AI资本支出将推动大宗商品需求超预期。 【市场回顾】 11月19日,A股市场震荡企稳,银行、石油石化等权重板块集体拉升,带动沪指飘红。 11月19日,日韩股市收盘齐跌,日经225指数收跌0.34%,报48537.70点;韩国综合指数跌0.61%,报3929.51点。 11月19日,国债期货各主力合约收跌。截至收盘,30年期国债期货(TL2512)报收116.090元,下跌0.480元,跌幅0.41%;10年期国债期货(T2512)报收 108.425元,下跌0.070元,跌幅0.06%;5年期国债期货(TF2512)报收105.880元,下跌0.030元,跌幅0.03%;2年期国债期货(TS2512)报收102.462元, 下跌0.028元,跌幅0.03%。 11月19日日间盘,国内商品期货主力合约涨跌互现,其中工业硅、多晶硅涨幅居前。 11月19日,ETF收盘涨跌不一,黄金股ETF(517520)涨4.79%,黄金股票ETF( ...
现金流改善46倍!谁懂这一数据的“含金量”?
Zheng Quan Ri Bao Wang· 2025-10-23 13:49
Core Viewpoint - Kolin Electric's significant growth in revenue and profit during the third quarter of 2025 reflects its strengthening core competitiveness in the smart grid sector, driven by stable operational performance and a low base from the previous year [1][2]. Financial Performance - For the first three quarters of 2025, Kolin Electric achieved a revenue of 3.216 billion yuan, a year-on-year increase of 23.63%, and a net profit of 217 million yuan, up 45.90% [1]. - In the third quarter alone, the company reported a revenue of 1.072 billion yuan, a 27.27% increase year-on-year, and a net profit of 56.52 million yuan, which surged by 705.48% [1]. - The non-recurring net profit for the third quarter reached 47.99 million yuan, reflecting a staggering growth of 1438.37% [1]. Cash Flow Improvement - The net cash flow from operating activities for the first three quarters was 305 million yuan, showing a remarkable increase of 4621.88%, significantly outpacing the net profit growth [2]. - This improvement in cash flow indicates enhanced collection capabilities, increased operational efficiency, and faster inventory turnover [2]. Strategic Initiatives - Kolin Electric's performance is supported by macroeconomic trends, including China's ongoing push for "dual carbon" goals, which is driving investment in energy transition and grid upgrades, creating a favorable market environment for the power equipment industry [3]. - The company plans to raise up to 1.5 billion yuan through a private placement to enhance liquidity, optimize R&D environments, and improve product offerings and service levels [3]. - The focus of the raised funds will be on smart grid and renewable energy R&D, which is expected to support current growth and ensure sustainable performance [3].
国网陇南供电公司:奋战保供电 主变焕新颜
Zhong Guo Neng Yuan Wang· 2025-09-22 08:07
9月20日,秋雨绵绵的陇南大地,110千伏同谷变电站内却是一派热火朝天的施工景象。国网陇南供电公司变电运检中心各专业班组正 在冒雨进行1号主变压器附件的安装调试工作,这场与时间赛跑的供电保障攻坚战已进入关键节点冲刺阶段。 图为9月20日,国网陇南供电公司变电检修班检修人员王旭东正在110千伏同谷变工作现场维护变压器热油循环装置。 据悉,110千伏同谷变电站于2003年建成投运,肩负着陇南市成县片区的核心电能中转、区域电网稳定供电的重任。近年来,周边地区 农业、工业发展迅猛,加之两台运行22年的主变压器内部老化、负荷承载能力不足等问题加剧,亟待升级改造。 为进一步优化电网电力配置、夯实电网运行稳定性、满足用户侧多样化需求,该公司迅速制定并积极推进检修计划,对1、2号主变压 器及各电压等级设备进行全面升级改造。本次技改还将会把原有户外110千伏敞开式电气设备全面更换为HGIS组合式电气设备,极大地减 少沙尘、潮湿、盐雾等环境因素对电气设备的侵蚀,从根本上消除多项安全隐患。 结合本次主变更换工作风险等级高、作业难点多的特点,该中心严格落实"三个提升"要求,在前期准备阶段,对涉及停电围栏布置、 工器具及特种车辆到场到 ...
安徽濉溪:城中村平稳渡过“烤验”
Zhong Guo Neng Yuan Wang· 2025-08-29 09:13
Core Viewpoint - The State Grid Suixi County Power Supply Company is actively upgrading and relocating power facilities in the core area of the ancient city Shiban Street to ensure stable electricity supply for residents during high-temperature periods and to support the development of tourism in the area [1][2]. Group 1: Infrastructure Upgrades - The company has relocated two public transformers and one dedicated transformer, constructed four cable wells, and laid 940 meters of cable to enhance the power supply infrastructure [2]. - The upgrades are part of a broader initiative to improve the power grid layout in urban villages, focusing on high and low voltage cable installation and transformer relocation [2]. Group 2: Operational Strategies - The company employs "live-line work" to minimize power outages during high temperatures, ensuring that residents' daily lives are less affected [2]. - Regular inspections are conducted using infrared thermometers to monitor equipment temperatures, and quarterly ground resistance tests are performed to prevent faults caused by high temperatures or rain [4]. Group 3: Community Engagement - The company has issued energy-saving advocacy letters to residents, encouraging them to conserve electricity and use it during off-peak hours [4]. - The staff actively patrols the streets to ensure the reliability of power supply, demonstrating commitment to maintaining comfort and safety in the historical district during the summer [4].
国网吉安县供电公司:烈日锻造“清凉线”,电网升级战夏峰
Zhong Guo Neng Yuan Wang· 2025-07-09 08:11
Group 1 - The article highlights the upgrade and transformation of the 10 kV Tongping Agricultural II Line in She Shang Village, aimed at enhancing the power supply reliability during the summer peak demand [1][2] - The project involves the installation of 135 new 12-meter high electric poles and a total of 7.299 kilometers of new lines, which will significantly improve the safety and efficiency of the power grid [2] - The upgrade will optimize the path of the power line, making maintenance and fault detection easier, thus ensuring a stable power supply for local residents during the hot summer months [2]
酷热天气导致美国电网不堪重负,部分地区批发电价飙升
Huan Qiu Shi Bao· 2025-06-25 22:48
Core Insights - The aging U.S. power grid is under significant pressure due to extreme heat, leading to soaring wholesale electricity prices in the Eastern U.S. [1][3] - On a recent Monday, Boston's real-time wholesale electricity price surged from under $50 per megawatt-hour to over $400, while New York City saw prices reach $600 per megawatt-hour [3] - The U.S. Department of Energy issued an emergency order for specific generators to operate at maximum output to mitigate the risk of blackouts in the Southeast due to high temperatures [3] Industry Challenges - The North American Electric Reliability Corporation warned that up to 89 million Americans could face electricity supply shortages this summer due to the shutdown of aging power plants and increased demand from extreme heat [3] - The American Society of Civil Engineers rated the overall infrastructure of the U.S. as a C, with energy infrastructure receiving a D+, indicating that most facilities are below standard and nearing the end of their lifespan [3] Future Demand Projections - The U.S. power grid faces challenges from projected significant increases in electricity demand, with peak demand expected to rise by 15% in summer and 18% in winter by 2034 [4] - The rapid growth of electric vehicles and AI data centers is anticipated to increase electricity demand from 17 gigawatts in 2022 to 35 gigawatts by 2030 [4] - The New York Times highlighted that the current U.S. power grid is "strained" due to insufficient transmission line construction, which hampers distribution during peak usage [4]
国网漳浦县供电公司:电网升级改造 助“荔”发展
Zhong Guo Neng Yuan Wang· 2025-06-17 11:18
Core Viewpoint - The upgrade of the power grid in Zhangpu County's Jiuzhen Town is essential for supporting the local agricultural development, particularly in the context of increasing electricity demand due to the peak agricultural season [1][3]. Group 1: Agricultural Context - Jiuzhen Town is a core area for specialty agriculture in Zhangpu County, featuring extensive lychee orchards and rice fields [1]. - The current agricultural season is critical, with irrigation and pesticide application activities underway, highlighting the urgent need for reliable electricity supply [1]. Group 2: Power Grid Upgrade - The original power line, with a diameter of 95 square millimeters, was insufficient to meet the growing demands of irrigation, processing, and cold chain logistics [1]. - The power company replaced the existing 95 square millimeter insulated wire with a 180 square millimeter insulated wire over a distance of 700 meters, enhancing the reliability of the power supply [3]. - The upgrade involved the installation of three new knife switches and was completed in seven hours, ensuring uninterrupted power for over 400 households during the construction [3]. Group 3: Impact on Local Agriculture - The upgraded power supply is crucial for the lychee preservation process, allowing for immediate cooling after harvest, which is vital for maintaining quality [3]. - Local farmers expressed confidence in taking larger orders due to the improved reliability of the cold chain logistics following the power grid upgrade [3]. - The power company plans to continue optimizing the power grid layout to support the electricity needs of specialty agriculture, contributing to rural revitalization efforts [3].
中银国际:电网升级改造拉动需求 产业链有望受益
智通财经网· 2025-05-08 07:31
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]