WAMS hybrid configuration for real time voltage stability monitoring application

Wide Area Monitoring System (WAMS) with Phasor Measurement Unit (PMU) has the capability to do real time monitoring including fast system condition changes. On the other hand, Supervisory Control and Data Acquisition (SCADA), which is vulnerable to that condition, are still widely used in wide world power system because of its capability and maturity. This paper proposes the framework in transforming SCADA into WAMS by installing required additional PMU while keeping the conventional measurement from SCADA. Moreover, the real time state estimation procedure in managing the initial state variable and weighting factor re-weight strategy is also proposed. The result shows that the proposed WAMS hybrid warrants better estimation accuracy and faster state estimation process than SCADA. In addition, the voltage stability monitoring as WAMS application can also successfully be obtained.