Software / Language: ETAP 19.0.1C (no programming language used) Study case: Load Flow (LF) Type: Academic group project, B.E. Electrical Engineering (Power), Air University, Islamabad
A grid-connected plant modelled in ETAP: a 220 kV grid source feeds a 30 kV network through two 63 MVA transformers, which is stepped down to 11 kV, 6 kV, 1 kV and 0.63 kV levels for motors, capacitor bank, charger/inverter loads and general loads. The report contains the single-line diagrams, equipment input data and the load flow, loading, loss and alert reports.
| Item | Data |
|---|---|
| Grid source | 220 kV, 5029.875 MVAsc |
| Transformers 1 and 2 | 63 MVA, 220/30 kV |
| Transformers 3 and 4 | 20 MVA, 30/11 kV |
| Transformers 6 to 10 | 3.5 MVA, 11/1 kV |
| Transformer 5 | 2 MVA, 11/1 kV (feeds 1.6 MVA load and 1000 kvar capacitor bank) |
| Transformer 11 | 6 MVA, 11/6 kV (feeds six 500 kW/HP induction motors) |
| Charger/inverter branches | Five branches, 0.63 kV, 3150 kVA load each |
| Cables | Cable2 to Cable5 (32808.4 ft each) |
| Total generation (swing bus) | 10.222 MW, 3.240 Mvar |
| Total branch losses | 1095.5 kW, 2274.3 kvar |
Part (a): 220 kV grid and the two 63 MVA power transformers. Part (b): 30 kV network with cables and the 20 MVA transformers.
Part (c): 11 kV bus, 11/1 kV transformers, chargers and inverters, capacitor bank and the motor feeder.
Induction motor equivalent circuit parameters and the torque, current and power factor curves against slip.
Bus voltages, generation, loads and branch power flows from the ETAP load flow report.
The complete report is available as a PDF: ETAP_Grid_Connected_Plant_Analysis.pdf
Modelled the complete grid-connected plant in ETAP — built the single-line diagrams across all three voltage sections (220 kV/30 kV/11 kV), configured transformer, cable, motor, and load parameters, ran the load flow study, and compiled the equipment input data, loading, loss, and alert reports into the final analysis.
Muhammad Shahzaib, Muhammad Ali, Muhammad Hamza Nasir (Islamabad Electric Supply Company)
ETAP 19.0.1C