State Estimation in Power Systems Part II: Implementation and Applications

Abstract

State estimation is a digital processing scheme which provides a real-time data base for many of the central control and dispatch functions in a power system. Its purpose is to permit improvements in system security and data accuracy and to reduce measurement and telemetry cost. The on-line implementation of an efficient state-estimator algorithm is discussed, and its feasibility is demonstrated on a 400-node network. The main motivations for and potential applications of on-line state estimation are listed, and the tradeoffs between measurement, estimation, and on-line load- flow computation are briefly discussed.