配电电缆局部缺陷精准定位算法和定量评估方法

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科技赋能电网保供 创新护航电网安全
Zhong Guo Neng Yuan Wang· 2025-08-28 07:31
Core Insights - Shandong power grid has reached a record high electricity load of 130.21 million kilowatts, marking the eighth historical peak this summer [1] - The power supply is critical for national economy and people's livelihood, with ongoing efforts to enhance grid stability through digital and intelligent technology innovations [1] Group 1: Power Supply and Load Management - The Shandong power grid has experienced over 61 days of electricity loads exceeding 100 million kilowatts since June, a first in its history [1] - The technical team is committed to ensuring power supply during peak summer demand, utilizing technological advancements to improve grid reliability [1] Group 2: Weather-Related Challenges and Solutions - Summer brings severe weather challenges, prompting the development of differentiated protective measures for the distribution network [3] - Specific lightning protection strategies have been implemented to reduce faults caused by lightning strikes, significantly improving protection levels [4] Group 3: Real-Time Monitoring and Fault Management - The optimization of distribution network systems has provided robust technical support for power supply during peak demand [5] - Advanced features like "self-healing" and "one-click transfer" have been developed, resulting in 221 instances of improved power restoration during peak summer [5] Group 4: Fault Isolation and Repair Efficiency - A new technology combining local rapid response and global coordination has been introduced to quickly isolate faults, minimizing the impact on other users [6] - This technology has been deployed on over 200 distribution lines, successfully isolating faults and reducing the number of affected customers by 7,520 [7] Group 5: Cable Fault Prevention - Innovative methods for detecting and diagnosing potential cable faults have been developed, enhancing the reliability of the power supply [8] - The new detection technology has been applied in over 1,200 locations, preventing 15 cable faults since the peak summer period began [8]
国网山东电科院创新技术护航今夏用电高峰
Qi Lu Wan Bao· 2025-08-28 06:48
Group 1 - The highest electricity load in Shandong's power grid reached 1.3021 million kilowatts, marking the eighth historical high this summer [1] - Since June, the power load in Shandong has exceeded 100 million kilowatts for 61 days, a first in the province's power history [1] - The State Grid Shandong Electric Power Research Institute is committed to ensuring power supply during peak summer, leveraging digital and intelligent technology innovations to enhance grid supply capabilities [1] Group 2 - The summer season poses significant challenges to the stability of the distribution network due to severe weather conditions, prompting the development of differentiated prevention and control strategies [3] - Specific lightning protection plans have been created based on regional lightning characteristics, significantly reducing faults caused by lightning strikes [3] - A standardized insulation spraying technique has been implemented on over 1,300 distribution lines to address faults caused by foreign objects during strong winds [3] Group 3 - The optimization of distribution network business systems has provided robust technical support for power supply during peak summer [4] - Advanced features such as "self-healing" and "one-click transfer" have been developed and implemented across 17 cities, enhancing fault detection and repair efficiency [4] - Real-time monitoring of over 200,000 distribution stations has enabled precise fault assessment and rapid repairs, improving power supply reliability [4] Group 4 - A new technology combining local rapid response and global coordination has been introduced to quickly isolate faults and minimize power outage impacts [6] - This technology has been deployed on over 200 distribution lines since June, successfully isolating faults in all seven incidents, preventing outages for 390 transformers [6] - The implementation of this technology has significantly improved fault handling efficiency and power supply reliability [6] Group 5 - The pressure on distribution cables has increased due to rising electricity loads, necessitating advanced detection methods for potential faults [7] - Innovative algorithms and diagnostic devices have been developed to accurately identify and assess cable defects, addressing traditional detection challenges [7] - Since the peak summer period began, this technology has been applied in over 1,200 locations, preventing 15 cable faults and enhancing supply reliability [7]