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AssigneeRensselaer Polytechnic Institute
InventorsJoe Hong CHOW, Scott Gordon GHIOCEL
Estimating the term…
In steady-state voltage stability analysis, as load increases toward a maximum, conventional Newton-Raphson power flow Jacobian matrix becomes increasingly ill-conditioned so power flow fails to converge before reaching maximum loading. A method to directly eliminate this singularity reformulates the power flow problem by introducing an AQ bus with specified bus angle and reactive power consumption of a load bus. For steady-state voltage stability analysis, the angle separation between the swing bus and AQ bus can be varied to control power transfer to the load, rather than specifying the load power itself. For an AQ bus, the power flow formulation is only made up of a reactive power equation, thus reducing the size of the Jacobian matrix by one. This reduced Jacobian matrix is nonsingular at the critical voltage point, eliminating a major difficulty in voltage stability analysis for power system operations.
A method of identifying and correcting potential voltage instability caused by a contingency in an electrical power generation and distribution system, the electrical power generation and distribution system comprising a plurality of buses, the plurality of buses comprising at least one generator bus and at least one load bus, each configuration having a maximum loadability, the method comprising the steps of:
Dependencies are inferred from the claim text.