New technique for enhancing the accuracy of HVDC systems in state estimation
We describe a new technique for enhancing the accuracy of HVDC in state estimation. The HVDC model consists of switching devices and identifies the operating mode. The DC current is defined as a state variable to estimate the HVDC systems. The fast-decoupled WLS is calculated based on modified gain matrix w.r.t DC current. The algorithms verify through comparative test between Korean EMS and existing EMS.
hvdc system state estimation energy management systems topology processing