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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 discusses a technique to implement Remedial Action Schemes (RAS) or Special Protection Systems (SPS) for Variable Transfer Limits (VTL) computation. Need for RAS implementation for VTL calculations are discussed. The technique presented can be applied to the bus/branch model as well as for the node/breaker model. Advantages of using the State Estimator cases for VTL calculations are discussed...
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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