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2023
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State Grid Gaomi City Power Supply Company: A new generation of distribution automation system to help the operation of the power grid.
State Grid Gaomi City Power Supply Company greatly improves the success rate of distribution network line switches coincidence from less than 50% to more than 70% by using the accurate and efficient fault handling function of the new generation distribution automation system. The company also realizes automatic load transfer in non-fault areas through accurate fault positioning and isolation intelligent distributed self-healing function, and the self-healing rate reaches more than 85% during summer, reducing more than 490 power outages on a year-on-year basis. The multi-dimensional judgment logic function of ground fault successfully shortened the number of ground fault searches by 18 times, and reduced the fault search time and the influence of power rationing by 1 hour/time on average. In load regulation, the "one-key sequential control" function shortened the line load transfer time from half an hour to seconds of 42 lines with 30-degree phase angle difference. The newly deployed "load precision control" function also played a great role in ensuring the stability of power consumption for important customers and residents, saving 2130 hours of power failure during summer, and effectively improving the average power failure time of 0.33 hours per household. With the continuous optimization of the "FA+ three-level protection" judgement and logic protection scheme of the new automation system and the gradual deployment of many advanced applications such as "one-key load transfer of the whole station" and "important customer power protection", the new generation of distribution automation system will fully support the reliable power supply of the power grid, the precise regulation of the distribution network and the active operation and maintenance of the equipment, and continue to play its role in completing the key power protection tasks.
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