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S3M-SGMV Plus: The Online measurement, monitoring & management system for MV grid.

1. S3M-SGMV Plus structure

2. S3M-SGMV plus aim to:

›› Monitor the operation status of the MV power grid & assets.

›› Warning user about incidents occurring on the grid and/or electrical assets: loose contact point, phase difference, overload in branches and main circuit, high/low voltage value, etc.

›› Predict Partial discharge and Surface discharge.

›› Enhance the management process: data digitalization, report can be exported to support the management process.

›› Reduce manpower.

›› Reduce the risk of power outage due to breakdown, enhance safety and reliability of power supply.

›› Support operators to evaluate, make plan for CBM (condition-based maintenance).

3. At MV cabinet

– In MV Cabinet, the S3M-SGMV plus monitor:

+ Cable terminal contact temperature.

+ Environment humidity & temperature.

+ Partial discharge, Surface discharge and Corona.

+ RMU fault indicator’s state, SF6 density

4. On transformer

– On the LV transformer, the S3M-SGMV plus monitor:

+ Thông số điện lộ tổng: U, I, P, Q, S, cosϕ.

+ Power quality: ΔU, Δf, THD (%).

+ Top-oil temperature, LV terminal contact temperature.

+ Gas relay and oil level state.

5. LV distribution board

– In LV distribution board, the S3M-SGMV plus monitor:

+ Electrical parameter in feeder: U, I, P, Q, S, cosϕ.

+ ACB, MCCB, bus bar contact temperature.

+ Distribution board door open state, electrical leakage.