| Abstract: |
| This paper presents design of an self contained actuators unit in wide area damping control of power system in
stabilizing system response for both nominal system condition and during actuator faults. First it is presented that use
of multiple actuators in wide area control aid in improving damping in power system. A wide area damping controller
feeding multiple actuators to satisfy multiple objectives in wide area damping control of power system is designed.
Minimization of infinity norm of closed loop transfer function of power system with wide area controller in feedback
path & closed loop poles placement techniques are used in controller synthesis. Second a reconfigurable control on
the lines of fault hiding principle is added to the controller design to maintain system damping to pre-fault level in
case of actuator faults. A reconfiguration component(RC) is activated on occurrence of actuator fault thereby
reconfiguring system dynamics and redistributing wide area control signal among remaining active actuators. RC
together with remaining active actuators and under same wide area damping controller maintains system damping to
pre-fault level thereby preserving system dynamic response. In the reconfigurable control design presented here no
new actuators outside the unit of actuators designed for wide area damping control is required. This makes for an self
contained actuators unit in wide area damping control of power system both for nominal system condition and for
system affected by actuator faults. A two area power system model is considered here for demonstrating effectiveness
of designed robust damping controller with multiple outputs feeding multiple actuators in wide area control and
illustrating the idea of self contained actuators unit for maintaining system damping in case of actuator faults. |
| Key words: Wide area control, Robust damping controller, Actuator fault, Reconfigurable control, Reconfigurationcomponent, Self contained actuators unit, Power oscillations |
| DOI：10.1186/s41601-020-0151-3 |
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| Fund: |
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