Core Insights - The article highlights the successful completion of the smart switch upgrade for all 10 kV distribution lines by the Nanfang Electric Power Guangxi New Power Group Mengshan Power Supply Bureau, achieving 100% coverage and marking a significant advancement in distribution automation levels [1] Group 1: Project Overview - The smart grid transformation project for 10 kV distribution lines began in 2020, with a total of 253 smart switch devices deployed that meet the three remote standards (remote measurement, remote signaling, remote control) [1] - In 2023, the bureau initiated an upgrade from the "three remote" to the "four remote" system, which includes remote adjustment capabilities [1] Group 2: Technical Challenges and Solutions - The project faced several technical challenges, including automatic zeroing of set parameters, mismatches between human-machine interfaces and system software versions, and conflicts in communication port protocols [1] - The bureau organized technical teams to address these issues, conducting in-depth software logic checks and optimizing the zero-sequence voltage judgment module with remote support from manufacturers [1] Group 3: Upgrade Outcomes - As of September 2023, 157 smart switches have been successfully upgraded, resulting in a significant increase in fault isolation accuracy for the new generation of devices [1] - All upgraded devices passed a 72-hour live test, demonstrating enhanced stability of the 10 kV smart distribution network [1] - The upgrade project eliminated 37 equipment hazards, significantly reduced the average fault location time, and effectively improved power supply reliability metrics [1]

Core Viewpoint - The first 5G-based intelligent distributed feeder automation (FA) demonstration project in Shaanxi Province has successfully completed on-site testing, marking a significant advancement in the efficiency of fault handling in power distribution automation [1] Group 1: Project Overview - The demonstration project is located in the core area of Tongchuan City, specifically on the "Huayuan East Line - Huazheng Line" connection, utilizing 5G technology to enhance information security and power supply reliability [1] - The project has achieved a breakthrough from "second-level isolation" to "self-healing within seconds" in fault handling efficiency, supporting the high-quality development of the distribution network [1] Group 2: Technical Implementation - The project involves the construction of SPN devices connected to a mobile 5G transmission network at the dispatch end, creating a wireless, high-speed, and secure communication link [1] - The deployment of downlink UPF devices and AR routers at the network layer enables end-to-end data direct connection, establishing a high-speed local information channel between terminals [1] - Improvements have been made to the functional requirements, performance indicators, control logic, maintenance methods, and management specifications of 5G distribution terminals [1] Group 3: Performance Metrics - The company has successfully eliminated and isolated faults within 100 milliseconds and achieved load transfer within 1 second, significantly enhancing the speed of system fault handling [1] - The testing has accumulated valuable experience in the design, operational methods, practical maintenance, and management specifications of the 5G-based intelligent distributed FA system [1] - This lays a foundation for the systematic promotion of self-healing functions in the distribution network [1]

Core Insights - The article highlights the innovative achievement of the State Grid Jining Power Supply Company in the field of power distribution equipment maintenance and testing, specifically through the introduction of the "Integrated Intelligent Debugging Device for Primary and Secondary Distribution Switchgear" [1][3] Group 1: Innovation and Efficiency - The new device addresses industry pain points such as low debugging efficiency, complex operational processes, and high safety risks by employing integrated debugging technology, adaptive automatic debugging technology, and multi-switch synchronous debugging technology [3] - The debugging time has been significantly reduced from 2 hours to 20 minutes, with an average daily debugging capacity of 48 pole-mounted circuit breakers and 6 ring network boxes, resulting in an 80% increase in debugging efficiency compared to previous methods [3] Group 2: Quality and Safety - The device enables intelligent detection of the entire electrical circuit during debugging, allowing for precise identification of deep-seated defects such as reversed zero-sequence current transformers, thereby ensuring the quality of distribution switchgear entering the grid [3] - The innovation ensures safety, controllability of quality, and a higher level of intelligence in the debugging operations, marking a key technological breakthrough in the field of distribution automation [3] Group 3: Future Directions - The State Grid Jining Power Supply Company plans to continue addressing challenges in production through a spirit of striving for excellence and leading demonstration efforts, focusing on cross-regional technical collaboration and accelerating the application of innovative results [3] - The company aims to leverage technological dividends in energy transition and digital empowerment, establishing a unique path of innovative practice characterized by Jining Electric [3]