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D14: EMS Uses Online Dissolved Gas Monitoring to Detect Emerging Failures of Transformer Banks and Take Corrective Action

This use case describes how the deployment of online Dissolved Gas Analysis (DGA) devices could improve SCE’s monitoring, maintenance, and operation of substation transformers. Online DGA allows SCE to monitor transformer conditions as frequently as once per hour. SCE currently performs DGA analyses once per year using a manual process. The increase in monitoring frequency would allow SCE to identify transformers in need of repair or replacement prior to failure. It would also enable SCE to optimize transformer utilization over their life spans. The business value of this enhanced transformer monitoring includes improved system reliability and reduced costs.

Year Published:
Southern California Edison
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