In this paper the direct stability evaluation of power systems, with voltage-dependent loads, using topological energy function is given with applications. This is based on the philosophy of a structure-preserving model for power systems. The loads are modelled as arbitrary functions of respectively bus voltages. A classical model is assumed for generators and system equations are formed using centre of angle (COA) reference. A topological energy function is developed and applied for the stability evaluation using the potential-energy boundary surface (PEBS) method. Examples of a 4-machine and a 7-machine system are considered for illustration. The critical clearing time (T<inf>cr</inf>) is obtained both by digital simulation and by the direct method for various load characteristics and for different fault locations. © 1987.

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dc.contributor.authorPadiyar, K.R.
dc.contributor.authorSastry, H.S.Y.
dc.date.accessioned2026-02-05T11:00:43Z
dc.date.issuedTopological energy-function analysis of stability of power systems
dc.description.abstract1987
dc.identifier.citationInternational Journal of Electrical Power and Energy Systems, 1987, 9, 1, pp. 9-16
dc.identifier.issn1420615
dc.identifier.urihttps://doi.org/10.1016/0142-0615(87)90020-2
dc.identifier.urihttps://idr.nitk.ac.in/handle/123456789/28117
dc.subjectELECTRIC NETWORKS - Topology
dc.subjectSYSTEM STABILITY - Lyapunov Methods
dc.subjectSHORT-TERM SYSTEM DYNAMICS
dc.subjectTOPOLOGICAL ENERGY FUNCTIONS
dc.subjectTRANSIENT STABILITY
dc.subjectELECTRIC POWER SYSTEMS
dc.titleIn this paper the direct stability evaluation of power systems, with voltage-dependent loads, using topological energy function is given with applications. This is based on the philosophy of a structure-preserving model for power systems. The loads are modelled as arbitrary functions of respectively bus voltages. A classical model is assumed for generators and system equations are formed using centre of angle (COA) reference. A topological energy function is developed and applied for the stability evaluation using the potential-energy boundary surface (PEBS) method. Examples of a 4-machine and a 7-machine system are considered for illustration. The critical clearing time (T<inf>cr</inf>) is obtained both by digital simulation and by the direct method for various load characteristics and for different fault locations. © 1987.

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