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Power evacuation studies for grid integrated wind energy conversion system

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  3. Power evacuation studies for grid integrated wind energy conversion system

Power evacuation studies for grid integrated wind energy conversion system

Summary

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.

Technical Report

View Technical Report [PDF, 2.39 MB]

Available Tables / Datasets in Report

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]
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