Patent · US Active

Parameterized potential functions for equality constraints

US12386328B2 · kind B2 · utility

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17Claims
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Key dates

Filing dateAug 2, 2022
Grant dateAug 12, 2025
Priority date
Expiry dateSep 4, 2043

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH02J2203/20
  • WIPO fieldElectrical machinery, apparatus, energy
  • WIPO sectorElectrical engineering

Abstract

Prior methods of state estimation, based on a constrained optimization problem with equality and/or inequality constraints, rely on penalty-based heuristics which can produce very large weight values, resulting in ill-conditioning of the gain matrix. Disclosed embodiments of state estimation convert the constrained optimization problem into an unconstrained convex optimization problem in which violated equality and/or inequality constraints are represented as parameterized potential functions, each comprising a center-of-attraction parameter. This unconstrained convex optimization problem can be iteratively formed, using successively updated values for the center-of-attraction parameters, and solved, until no equality and/or inequality constraints are violated, to produce a final estimated state. This final estimated state may then be used to control the system being monitored, such as a power system.

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