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Home / Technical Articles / The analysis of MV/LV incoming supply configurations for large industrial plants

Small number of large loads…

The metal-processing industry is an excellent example where you can find specific large industrial plants. Why specific? Maybe because in such plants, there are only a few individual large loads that have to be connected directly to the MV system. That’s not the usual practice you can see in conventional plants.

The analysis of MV/LV incoming supply configurations for large industrial plants
The analysis of MV/LV incoming supply configurations for large industrial plants

These loads include, for example, large compressor drives, arc furnaces, and large engine test benches.

Due to the small number of large loads, in plants of the metal-processing industry, the focus of attention is on configuration of the supply from the MV into the LV system.

Table of contents:

  1. Best MV/LV incoming supply variant
  2. Optimum system configuration for connecting transformer load-centre substations
    1. Investment costs
    2. System losses
    3. Coverage of power demand
    4. Supply reliability
    5. Voltage quality
    6. Hazard to persons and equipment
    7. Maintenance and servicing expense
    8. Ease of system management
    9. Environmental compatibility
  3. Conclusion

1. Best MV/LV incoming supply variant
(in terms of power system engineering)

In configuration of the MV/LV incoming supply, a distinction is made between centralized and decentralized multiple incoming supply.

Whereas the transformers of the centralized multiple incoming supply are installed in an enclosed electrical operating room at the edge of the hall, the transformers of a decentralized multiple incoming supply are containerized and installed in the load centers of the production and function areas.

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Edvard Csanyi

Electrical engineer, programmer and founder of EEP. Highly specialized for design of LV/MV switchgears and LV high power busbar trunking (<6300A) in power substations, commercial buildings and industry facilities. Professional in AutoCAD programming.

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