Adaptive RAS/SPS System Settings for Improving Grid Reliability and Asset Utilization through Predictive Simulation and Controls

O’Brien, James; Barrett, Emily; Fan, Xiaoyuan; Diao, Ruisheng; Huang, Renke; Huang, Qiuhua

doi:10.2172/1580707

Cited by 1 publication

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“…Transient stability is a crucial aspect of power system stability, which refers to the ability to keep all generators synchronized after a large disturbance. If a power system is not transient stable, necessary corrective actions, e.g., load shedding and generation trip, will take place by Remedial Action Scheme (RAS) or Special Protection System (SPS) [1][2][3][4]. Usually, these corrective actions are designed offline based on the time-domain simulation of a few selected severe contingencies under some representative operating conditions (e.g., spring light, summer peak, and winter peak).…”

Section: Introductionmentioning

confidence: 99%

Deep Learning-Based Adaptive Remedial Action Scheme with Security Margin for Renewable-Dominated Power Grids

et al. 2021

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The Remedial Action Scheme (RAS) is designed to take corrective actions after detecting predetermined conditions to maintain system transient stability in large interconnected power grids. However, since RAS is usually designed based on a few selected typical operating conditions, it is not optimal in operating conditions that are not considered in the offline design, especially under frequently and dramatically varying operating conditions due to the increasing integration of intermittent renewables. The deep learning-based RAS is proposed to enhance the adaptivity of RAS to varying operating conditions. During the training, a customized loss function is developed to penalize the negative loss and suggest corrective actions with a security margin to avoid triggering under-frequency and over-frequency relays. Simulation results of the reduced United States Western Interconnection system model demonstrate that the proposed deep learning–based RAS can provide optimal corrective actions for unseen operating conditions while maintaining a sufficient security margin.

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Section: Introductionmentioning

confidence: 99%