Static Voltage Stability Enhancement Using FACTS Controller

The modern day power system is faced with challenges of voltage instability and has become a great concern to the power system industries. In this work, we proposed a technique of the Network structural Characteristics Participation Factor (NSCPF) to identify the most critical node where reactive power compensator can be placed for voltage stability enhancement. The approach is based on the use of eigenvalue decomposition technique on the submatrix of the partitioned bus admittance matrix. Conventional power flow based approach of voltage stability index (L-Index) and the modal analysis methods are used as benchmarks to the proposed approach to determine its effectiveness. The STATCOM FACTS controller is in turn installed at the critical bus as identified by both techniques. Simulation results obtained show that, the suggested approach saves time and is more advantageous in identifying the suitable bus for the placement of STATCOM.