Medium voltage and low voltage power system design and modeling of large-scale chiller for an EPC contractor in a steel factory
This project has been done (for 6 months) for the water cooling of a steel factory that consists of an MV chiller compressor, cooling towers, and many LV pump stations. This project helps the steel factory to extend the hot rolling section in new lines. This project was in a white label format for an EPC Contractor that wants to reduce design costs and save time. EPC contractor just focused on purchasing materials, construction and commissioning. In the first step of the design procedure, the electrical load list of equipment was finalized for LV & MV network. Then, transformer size, MV cables, MV switchgear, LV cables, LV switchgear, Power Center, and MCCs were designed by ETAP and Ecodial. According to this, each electrical panel (SLD, Panel Layout, and wiring diagram) were designed by EPLAN and AutoCAD.
Project specification:
Total consumption power: 6 MW
MV System : 6.6 kv, 31.5 kA – 3 sec. , 1250A, (2 of 3 logic)
MV Compressor : #6 , 750 kw
LV System : 0.4 kv , 100 kA – 1 sec. , 5000A, (2 of 3 logic)
Transformer : #2 , 3000 kVA
VFD elctromotor : #9 , 250 kw
Soft Starter electromotor: #3, 250 kW
MDL (Main Document List) in the electrical system of this project :
Electrical Load List
Electrical and Control Cable Schedule
Single Line Diagram For MV Switchgear- Mimic Panel
Single Line Diagram For LV Switchgear and MCC
Transformer Sizing
Single line diagram for Lighting Panel and Socket
Typical Wiring diagram For MV Switchgear
Typical Wiring diagram For LV Switchgear and MCC
Electrical Equipment Layout
Electrical Cable Routing Layout
Bus-Duct Design
Earthing Layout and Typical
Lighting and Socket Layout
Local Control Switch Drawing
Data Sheet For MV Switchgear
Data Sheet For LV Switchgear & MCC
Data Sheet For Transformer
Data Sheet For UPS – DC Charger
Data Sheet For LCS
Electrical cable calculation
Lighting Calculation
AC UPS Sizing – DC Charger
Short Circuit Studies
Load Flow Analysis Calculation
MTO For Cable Tray
MTO For Earthing
MTO For Electrical Power and Control Cable
MTO For Local Control Switch