전류측정성분과 불량정보 검출을 고려한 전력계통에서의 상태추정에 관한 연구

State Estimation Considering Current Measurement Component and Bad Data Detection

This paper describes a method for the state estimation considering current measurement component and detection of the bad data. The state values are estimated by weighted least square method in which measurement vector included bus injection current and line current. The bad data are detected using standardized variable of normal distribution and identified using sensitivity coefficients. When the bad data were occured by the bad measurement values. The results of the application to the model power system reveal the effectiveness of the presented algorithms.