Anna University conducted comprehensive power evacuation studies for the Tirunelveli region's wind farms (5,106 WTGs, 2,857 MW) under C-WET sponsorship, covering power flow, short circuit, and transient stability analysis. Power flow analysis revealed that beyond 50% wind penetration, multiple transmission lines become overloaded (70-80% penetration causing 17+ lines >100% loading), requiring 120-200 MVAR reactive compensation. Short circuit analysis identified 28 strong buses (fault level >10 p.u.) and 5 weak buses (fault level <5 p.u.), with weak points prone to evacuation problems. TCSC installation demonstrated 81.99 MW power enhancement on the Abisekapatty-Chekkanoorani line, while VSC-HVDC links reduced line loading by 50% compared to double-circuit AC lines. Transient stability analysis confirmed that wind farms without LVRT capability cause voltage recovery failures, whereas LVRT-equipped generators maintain stability and aid voltage recovery. A VSC-MTDC DC ring was proposed to relieve overloading on four critical lines, with power flows of 40-74 MW per line. Recommendations include dedicated 765/400 kV substations, dynamic reactive compensation, TCSC installation, VSC-MTDC systems, and mandatory LVRT capability for all wind generators.
| Sl. No. | Name of Dataset | Action |
|---|---|---|
| 1 | Tirunelveli Generation Details | Download [CSV, 550 B] |
| 2 | Substation Details | Download [CSV, 1.77 KB] |
| 3 | Overloaded Transmission Lines at 70% Wind Power Penetration | Download [CSV, 441 B] |
| 4 | Overloaded Transmission Lines at 80% Wind Power Penetration | Download [CSV, 850 B] |
| 5 | Results from power flow analysis lines overloading 100%) | Download [CSV, 508 B] |
| 6 | Comparison Between Double Circuit AC Link vs VSC-HVDC | Download [CSV, 345 B] |
| 7 | AC Line Flow with DC Ring | Download [CSV, 349 B] |
| 8 | Flows in DC ring | Download [CSV, 172 B] |