Abstract
This paper describes the design of an advanced state estimation software. The heart of this package is a fast decoupled constant gain matrix estimator. Besides the estimation itself, two satellite functions - viz. observability and bad data analyses - have been developed. The observability analysis is performed on a topological basis and a systematic observability restoration procedure is included. The treatment of bad data is carried out through the “hypothesis testing identification” method which definitely departs from classical schemes. The software has been implemented on a 60-node system monitored by a Belgian area control center.
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