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]