1. SUNTHORN FAIMUENWAI TH Session 5 – Block 1 – Question 16 Barcelona 12-15 May 2003 1 TCSC as a tool to reduce the transmission congestion charge To reduce the congestion charge using TCSC. Technique of predictor-corrector primal-dual interior point enhanced linear programming. Verification with IEEE test system.

2. SUNTHORN FAIMUENWAI TH Session 5 – Block 1 – Question 16 Barcelona 12-15 May 2003 2 Transmission Congestion Charge

3. SUNTHORN FAIMUENWAI TH Session 5 – Block 1 – Question 16 Barcelona 12-15 May 2003 3

4. SUNTHORN FAIMUENWAI TH Session 5 – Block 1 – Question 16 Barcelona 12-15 May 2003 4 Thyristor-Controlled Series Capacitor Line Compensation 40% Minimum 60% Maximum Can be represented as series Capacitor

5. SUNTHORN FAIMUENWAI TH Session 5 – Block 1 – Question 16 Barcelona 12-15 May 2003 5 CONGESTION CHARGE IEEE 14 BUSIEEE 30 BUS

6. SUNTHORN FAIMUENWAI TH Session 5 – Block 1 – Question 16 Barcelona 12-15 May 2003 6 CONGESTION CHARGE IEEE 57 BUSIEEE 118 BUS

7. SUNTHORN FAIMUENWAI TH Session 5 – Block 1 – Question 16 Barcelona 12-15 May 2003 7 IEEE 30 BUS TEST SYSTEM

8. SUNTHORN FAIMUENWAI TH Session 5 – Block 1 – Question 16 Barcelona 12-15 May 2003 8 RESULTS

9. SUNTHORN FAIMUENWAI TH Session 5 – Block 1 – Question 16 Barcelona 12-15 May 2003 9 RESULTS (Cont.)

10. SUNTHORN FAIMUENWAI TH Session 5 – Block 1 – Question 16 Barcelona 12-15 May 2003 10 RESULTS (Cont.) Dramatic decrease in marginal price and transmission congestion charge. 2% reduction in total generation cost. 2.85% reduction in system loss.

11. SUNTHORN FAIMUENWAI TH Session 5 – Block 1 – Question 16 Barcelona 12-15 May 2003 11 COMMENTS Things to be taken into consideration : Cost of investment. Sensitivity of the line flow to the series compensation. THANK YOU