Core Viewpoint - The article highlights a record-breaking high-altitude live-line operation conducted by the State Grid Qinghai Ultra-High Voltage Company, showcasing advancements in power grid maintenance technology in extreme environments [1] Group 1: Operation Details - The live-line operation took place at an altitude of 5211.5 meters in the Tangula Mountain Pass, focusing on eliminating defects in the ±400 kV Chaila DC line [1] - The operation was time-sensitive, with only a 3-hour window in the morning to complete two live-line tasks due to unpredictable weather conditions [1] - The team consisted of skilled technicians, including a "technical champion" and the "first person in ±400 kV live-line operations," who worked together to achieve this milestone [1] Group 2: Significance and Impact - This operation represents a significant achievement for high-altitude power grid personnel and marks a milestone in China's power grid operation and maintenance technology under extreme conditions [1] - The successful completion of these operations contributes to the development of the plateau region, ensuring that electricity and warmth reach every corner of the snowy highlands [1]

Core Viewpoint - The extreme cold weather in the Ulanqab region poses significant challenges to the safety and stability of the power grid, necessitating urgent maintenance actions to prevent potential failures [1][3]. Group 1: Weather Impact on Power Infrastructure - The Ulanqab region experienced a severe cold wave, with nighttime temperatures dropping to minus 30 degrees Celsius, leading to ice formation on equipment and increased operational pressure on the power grid [1]. - A specific incident involved the 1542 knife switch's static contact head being affected by the extreme low temperatures, resulting in a positional shift that created a risk of poor contact [1]. Group 2: Emergency Response and Maintenance Actions - Upon receiving an emergency directive, maintenance personnel quickly mobilized to the fault site, facing harsh outdoor conditions including strong winds and limited visibility [3]. - The repair team successfully adjusted the misaligned static contact head after several hours of work in extreme cold, eliminating the equipment hazard and ensuring the power supply's normal operation [3]. Group 3: Professionalism and Commitment - The emergency repair under extreme conditions tested the professional skills of the maintenance team and exemplified their sense of responsibility [3]. - The dedication of the power repair personnel in overcoming challenges and ensuring the safety of the power grid highlights their commitment to providing warmth and light to households during winter [3].

Core Viewpoint - The company is actively implementing the "Forest and Electricity Safety" initiative to enhance the safety of power transmission lines in forested areas, addressing tree-line hazards through collaboration and systematic management [1][2]. Group 1: Initiative Implementation - The company has completed laser point cloud data analysis for tree-line hazards along the 35 kV power line, with recorded distances entered into a hazard database for coordinated management with local forestry authorities [1]. - Since the launch of the "Forest and Electricity Safety" initiative, the company has effectively tackled challenges in cross-regional power grid operations, achieving significant progress in tree-line hazard remediation [1]. Group 2: Hazard Management - The company has identified 91 tree-line hazards through a combination of drone inspections and manual reviews, establishing a dynamic management mechanism for each identified hazard [2]. - A total of 88 tree-line hazards have been addressed, achieving a remediation completion rate of 96.7%, laying a solid foundation for the goal of a "fundamental improvement" within three years [2]. Group 3: Safety Measures and Community Engagement - The company has conducted joint fire emergency drills to enhance collaborative response capabilities to fire incidents, while also increasing public awareness through signage and promotional materials in local communities [2]. - The company plans to deepen the joint patrol mechanism with local forestry workers, ensuring dual protection for power lines and forest fire prevention, while pre-positioning fire-fighting materials in key areas [2].

Core Insights - The Inner Mongolia Power Group Ulanqab Power Supply Company has initiated a special assessment action focusing on the corrosion and fracture issues of the grounding network at the 220 kV Jining Substation to ensure the safe and stable operation of the power grid [1][3] Group 1: Assessment Action - The assessment action utilizes intelligent technology to accurately identify equipment safety hazards, thereby strengthening the protective measures for the regional power grid [1][4] - The grounding network at the Jining Substation is critical for the stable operation of equipment and personnel safety, but it has been affected by soil erosion and climate change, leading to increased grounding resistance and safety risks [3][4] Group 2: Evaluation Methodology - The evaluation includes a comprehensive inspection covering key technical indicators such as overhead line diversion coefficients, contact potential, grounding resistance, step voltage, and soil resistivity [3] - Advanced detection equipment is used to create a topology map of the grounding network, allowing for precise identification of corrosion points and providing a reliable basis for subsequent hazard remediation [4] Group 3: Technological Innovation - The assessment introduces intelligent detection technology based on electromagnetic induction principles, which enhances efficiency by over 70% compared to traditional excavation methods, minimizing disruption to the substation's normal operations [4] - Real-time data analysis and automatic report generation are enabled through an intelligent data analysis system, providing clear insights into hazard locations, severity, and remediation suggestions [4] Group 4: Future Implications - The successful assessment not only addresses the safety issues caused by corrosion but also accumulates practical experience in applying intelligent technology in power grid operations [5] - The company aims to continue promoting the deep application of new technologies and methods in power grid operations, emphasizing a "safety first, prevention-oriented" approach to energy security and public service [5]