Abstract
The letter provides a thorough stochastic analysis of the impact of energy storage systems on the transient stability of transmission grids. This impact is evaluated considering the combined effect of different energy storage technologies, fault clearing times, and network topologies. The latter concerns the relative positions of faults, storage devices, and synchronous machines. The case study consists of stochastic time-domain simulations carried out for the all-island, 1479-bus model of the Irish transmission system that includes a real-world hybrid storage device. Results lead to some nonintuitive conclusions.
Highlights
T HE potential of Voltage Source Converter (VSC)-based Energy Storage Systems (ESSs) to provide ancillary services to a transmission grid has been demonstrated in recent works in the literature [1]
This letter presents a stochastic analysis of the transient stability of the Irish transmission system with inclusion of an ESS device
One can conclude that the ESS is able to increase considerably the CCTs of the faults that can occur in the system
Summary
T HE potential of Voltage Source Converter (VSC)-based Energy Storage Systems (ESSs) to provide ancillary services to a transmission grid has been demonstrated in recent works in the literature [1] These services include flattening the power provided by non-conventional power plants based on renewable sources (e.g., wind power plants), active power regulation in a transmission line, local and/or global frequency regulation, and Rate of Change of Frequency (ROCOF) mitigation. This letter aims to fill this gap and provides a comprehensive analysis that quantifies the impact of VSC-based ESSs on the transient stability of a transmission system modeled as a set of stochastic differential-algebraic equations With this aim, this letter considers a large, real-world transmission network, and compares different ESS technologies, control strategies and network topologies
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