Congestion Management of Transmission Systems Using FACTS

The efficient utilisation of the existing networks with high penetration of wind power needs more sophisticated control schemes using advanced power flow and voltage control resources, namely power electronic controllers (FACTS) while enhancing voltage security and voltage stability control. In this paper, the application of static series synchronous compensator (SSSC) for the purpose of congestion management and transfer capability of power systems with high penetration of wind power has been studied. A transfer capability computation approach for congestion management of systems with wind farms using series compensation FACTS i.e. SSSC is proposed in this paper. The approach proposed can simultaneously take voltage, thermal and voltage stability limits into consideration, and may also consider any electricity transaction constraints. Numerical results based on the modified IEEE 30 bus system with/without the SSSC demonstrate the feasibility as well as the effectiveness of the SSSC for congestion management with high penetration of wind power in the network. The results using SSSC to improve system transfer capability and congestion management is encouraging. With the large integration of wind generation into power transmission networks, it can be anticipated that FACTS controllers including the SSSC may be increasingly applied in effective management of transmission network power flows