Transient Stability Assessment Considering Hard Limits on Dynamic States

Romay, Omar; Martínez-Parrales, R.; Fuerte‐Esquivel, Claudio R.

doi:10.1109/tpwrs.2020.3025430

Cited by 8 publications

(2 citation statements)

References 6 publications

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“…Work continues on the subject of direct methods, with recent examples including [18,19]. For further recent developments in transient stability assessment, see [20][21][22].…”

Section: Literature Reviewmentioning

confidence: 99%

“…Thus, we may henceforth regard c as a free parameter or set it to zero. Given nonideal sensors, the approach in (22) may be slightly more susceptible to measurement bias than (21); however, the dc offset of the reference signal is not critical in this application, as noted above. No generator measurements or data are required to implement the control strategy.…”

Section: Real-time Trajectory Estimationmentioning

confidence: 99%

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Stabilising transient disturbances with utility‐scale inverter‐based resources

Elliott

Arabshahi

Kirschen

2020

IET gener. transm. distrib.

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This study presents a trajectory tracking control strategy that modulates the active power injected by geographically distributed inverter-based resources to support transient stability. Each resource is independently controlled, and its response drives the local bus voltage angle towards a trajectory that tracks the angle of the centre-of-inertia. The centre-of-inertia angle is estimated in real time from wide-area measurements. The main objectives are to stabilise transient disturbances and increase the amount of power that can be safely transferred over key transmission paths without loss of synchronism. Here the authors envision the actuators as utility-scale energy storage systems; however, equivalent examples could be developed for partiallycurtailed photovoltaic generation and/or Type 4 wind turbine generators. The strategy stems from a time-varying linearisation of the equations of motion for a synchronous machine. The control action produces synchronising torque in a special reference frame that accounts for the motion of the centre-of-inertia. This drives the system states toward the desired trajectory and promotes rotor angle stability. For testing, a reduced-order dynamic model of the North American Western Interconnection is employed. The results show that this approach improves system reliability and can increase capacity utilisation on stabilitylimited transmission corridors.

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“…Work continues on the subject of direct methods, with recent examples including [18,19]. For further recent developments in transient stability assessment, see [20][21][22].…”

Section: Literature Reviewmentioning

confidence: 99%

Section: Real-time Trajectory Estimationmentioning

confidence: 99%