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Utilities use the bus/branch model for planning and operations studies. In the bus/branch model, bus numbers are used as unique identifiers. However, bus numbers can change due to addition of equipment, specific substation configurations (splitting buses) or due to equipment outages. This often creates problems because many auxiliary files used in power system studies need to be modified. If the node/breaker...
This paper identifies the issues of using the bus/branch model for operations studies for current hour, next hour and future hours. Need for node/breaker model for contingency analysis is discussed. Major improvements needed to bus/branch model for contingency analysis in the area of contingency definition and contingency analysis is presented. Need to model Remedial Action Schemes (RAS) independent...
This paper describes Bonneville Power Administration (BPA) experience and justification of implementing node/breaker Full Topology model implementation for operations studies. Focus of this implementation is to increase reliability and accuracy by using a real-time case using the more-realistic Full-Topology model. Major changes needed to the bus/branch planning model to work with node/breaker model...
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