State Estimator (SE) Implementation On a Distributed Computer System

In modern Power Control Centers, the State Estimator application is responsible for determining the actual state of a power network based on the current network model, the available telemetry (analog measurements and digital statuses) and pseudo-measurements (scheduling patterns and data manually entered by the operator). At present each control center runs its own version of a State Estimator. We propose that it is much more economical to run one grid-wide State Estimator at one site and just exchange input and output data with the individual control centers. In this paper we describe the architecture for a Highly Available Distributed RAM (HADRAM) system that can provide the necessary computational power and reliability.