Core Viewpoint - The annual autumn inspection of the power grid is underway, with the successful completion of the first phase of the renovation and maintenance project at the Qingyuan Zhongzhai 220 kV substation, enhancing its safety and power supply capacity [1][2]. Group 1: Project Overview - The Qingyuan Zhongzhai 220 kV substation, operational since 2000, has played a crucial role in supporting the economic and social development of the Qingyuan region for 25 years [2]. - The renovation project includes 43 work areas and involves over 100 personnel, spanning three phases over 70 days, with 27 routine maintenance tests, 9 technical improvements, 1 major overhaul, and 45 safety inspections [2][4]. Group 2: Safety and Risk Management - The company has proactively optimized the power grid operation plan to mitigate risks during the complex adjustments required for the renovation [4]. - Safety measures include comprehensive inspections and the establishment of a three-tiered operation ticket review mechanism to ensure precise execution of operations [4][6]. Group 3: Employee Engagement and Training - The project emphasizes the integration of "red culture" and the promotion of the spirit of Lei Feng, encouraging employees to take responsibility and actively participate in the inspection process [5][6]. - The first phase of the renovation served as a practical training opportunity for young employees, enhancing their understanding of equipment and fostering a culture of continuous learning [4][6]. Group 4: Future Plans - The second phase of the renovation, focusing on the replacement of the main transformer, is set to begin on October 10, with the company committed to applying lessons learned from the first phase to ensure safety, quality, and efficiency [6].

Core Viewpoint - The successful replacement of high-voltage capacitor conductive rods at the 500 kV Shuozhou Substation enhances the safety and reliability of the power grid in Shanxi, particularly for the "West-to-East Power Transmission" project [1][5]. Group 1: Project Overview - The maintenance work at the 500 kV Shuozhou Substation took place from September 12 to September 28, involving the inspection of 10 primary devices and 13 protection devices, as well as the replacement of high-voltage capacitor conductive rods and upgrades to protection devices [1]. - The project utilized three oil filter machines, three vacuum pumps, and three special vehicles, with over 50 personnel involved in the operations [1]. Group 2: Technical Details - The high-voltage capacitor conductive rod is critical for the safety of the power line; replacing the original three-segment conductive rod with a seamless single rod significantly reduces potential safety hazards [1]. - The replacement process included detailed safety checks, such as ensuring the internal gas composition of the high-voltage capacitor met safety standards before personnel could enter [3][4]. Group 3: Testing and Results - The final assessment on September 28 included long-duration induced voltage tests and neutral point AC voltage tests, marking the first such tests for 500 kV capacitors in the province [5]. - All test results were within acceptable ranges, confirming the equipment's readiness for operation and ensuring the stability of the "West-to-East Power Transmission" corridor [5].

Core Insights - The concentrated maintenance of the Changhua Substation marks the beginning of the autumn inspection for the State Grid Hangzhou Power Supply Company, focusing on core equipment maintenance and risk assessment [1][2] - The summer of this year saw a record high electricity load in Hangzhou, reaching 24.112 million kilowatts, necessitating a thorough inspection of the equipment to ensure reliability [1] - The company plans to undertake over 700 tasks related to infrastructure, relocation, and technical upgrades this autumn, aiming to enhance the reliability and risk resistance of the power supply [2] Group 1 - The autumn inspection at Changhua Substation lasts for three days and aims to identify equipment hazards to bolster regional power supply reliability [1] - The concentrated maintenance occurs every 5 to 6 years, serving as a comprehensive health check for the equipment [1] - The company is implementing a three-year action plan focused on identifying hazards, addressing weaknesses, and strengthening the foundation of the power grid [1] Group 2 - The company will continue to enhance operational maintenance and upgrade efforts, guided by the three-year action plan [2] - The focus will be on regular and detailed equipment management to improve the reliability of the power supply [2] - The ongoing efforts are part of a broader strategy to mitigate supply risks and ensure stable electricity delivery [2]