Effect of Uniformly Distributed Parameter Line Models on the Evaluation of PV Curves and of the Maximum Loading Condition
Roberto Benato, Giovanni Gardan, Federico Milano
Abstract
PV curves are generally obtained by considering lumped models of transmission lines. This approximated model can yield an inaccurate estimation of the maximum loading condition of the system. This letter shows that accuracy can be improved by considering line models with uniformly distributed parameters. Analytical evaluations of the PV curve and of the voltage collapse point of a two-bus system are obtained by applying the Ossanna's theorem. Then the impact of different line models on large-scale systems is evaluated through a continuation power flow analysis of a real-world model of the Sicilian transmission system including the Sicily-Malta 120 km cable connection.
Topics & Concepts
Electric power transmissionTransmission lineLine (geometry)Power flowContinuationPoint (geometry)Control theory (sociology)Electric power systemVoltageMathematicsPower (physics)EngineeringComputer scienceElectrical engineeringGeometryPhysicsControl (management)Quantum mechanicsProgramming languageArtificial intelligenceOptimal Power Flow DistributionPower System Optimization and StabilityThermal Analysis in Power Transmission