NDLI: Stabilising transient disturbances with utility-scale inverter-based resources

Content Provider	IET Digital Library
Author	Elliott, Ryan T. Arabshahi, Payman Kirschen, Daniel S.
Abstract	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 partially-curtailed 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 stability-limited transmission corridors.
Starting Page	6534
Ending Page	6544
Page Count	11
ISSN	17518687
Volume Number	14
e-ISSN	17518695
Issue Number	Issue 26, Dec (2020)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-gtd.2020.1319
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-gtd/14/26
Journal	IET Generation, Transmission & Distribution
Publisher Date	2021-01-05
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Active Power Centre-of-inertia Angle Control of Electric Power System Geographically Distributed Inverter-based ReSource Invertors Local Bus Voltage Angle North American Western Interconnection Photovoltaic Power System Power Electronics Power Generation Control Power Generation Fault Power Generation Reliability Power Grid Power Supply Power System Control Power System Transient Stability Reliability Rotor Angle Stability Rotors Solar Power Stations Supervisory Circuit Synchronous Machine System Reliability Trajectory Tracking Control Strategy Transient Disturbances Transient Stability TurboGenerator Type 4 Wind Turbine Generator Utility-scale Energy Storage System Utility-scale Inverter-based ReSource Wide-area Measurement Wind Power Plant Wind Turbine
Content Type	Text
Resource Type	Article
Subject	Control and Systems Engineering Energy Engineering and Power Technology Electrical and Electronic Engineering

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