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We explore the passivity-based control (PBC) for robust UPFC controller design. Under this framework, the dynamical model of UPFC will be represented by a Euler-Lagrangian (EL) system with a set of EL parameters. The energy-dissipative properties of system model are fully retained. The proposed nonlinear UPFC controller consists of two feedback loops. In the inner loop, the so-called passivity controller...
A new comprehensive approach is presented to improve the power swings damping of power systems. While the approach integrates the unified power flow controller (UPFC) and superconducting magnetic energy storage (SMES), employs direct Lyapunov method concept to determine the control scheme based on nonlinear power system model. It is shown that in transient states, SMES cooperates with the UPFC converters...
This paper presents a power flow model of a voltage-source converter-based (VSC-based) HVDC transmission system suitable for incorporation into the existing Newton-Raphson algorithm. Mathematical descriptions for two configurations, point-to-point HVDC and back-to-back HVDC are derived. Different reactive compensation control modes at AC terminals of HVDC are also considered in detail. The proposed...
This paper presents a novel nonlinear control scheme for designing static synchronous compensators (STATCOM). A passivity-based approach is proposed for designing robust nonlinear STATCOM controller. The mathematical model of STATCOM will be represented by a Euler-Lagrange (EL) system corresponding to a set of EL parameters. By employing the Park's transformation, the differential geometry approach...
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