Energy Digest
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Technical Papers & Research
AI-curated academic research for power system engineers
Grid Operations & Resilience 4 papers
Distributionally robust scheduling for electrified heating systems using thermal storage reduces demand violations by 40% compared to deterministic forecast-based scheduling, and up to 10% relative to a nominal chance-constrained model. The proposed framework also helps reduce daily operating costs by up to 34% when considering real-time rebound cost of demand violations as a second-stage term. This approach leverages limited residual forecast samples to address forecast uncertainty in day-ahead electricity consumption schedules.
KESTREL EMT, a free and open-source electromagnetic transient solver with Python integration, has been validated through three case studies involving industrial capacitor switching transients, demonstrating consistent results with analytical predictions and established IEEE benchmarks. The tool is particularly suitable for smaller utilities, consultancies, and academic institutions in developing regions due to its cost-effectiveness. A validated methodology using KESTREL EMT has been established for conducting industrial electromagnetic transient studies.
Decoupled internal energy regulation and inertial response provision are crucial for grid-forming multilevel-converter-based E-STATCOMs, as conventional methods can accelerate storage cycling when the storage is unavailable. A new control strategy assigns total internal-energy regulation to the ac-side active-power path, decoupling it from the dc-side storage power and enabling flexible operation according to storage availability. This approach mitigates unnecessary storage cycling and improves overall system efficiency.
The second-order cone relaxation of the optimal power flow problem with angles recovery in meshed networks was investigated for its properties, including relaxation tightness, nodal voltage angles recovery, and alternating-current-OPF feasibility. Theoretical discussion was supported by numerical experiments on standard IEEE test cases. Implications for power system planning are briefly outlined.
Energy Storage & Markets 1 papers
Increased participation in a decentralized balancing model in Belgium led to significant positive effects on balancing costs at first, but high total capacity risk of overshooting potential benefits. Overshoots could require more explicit activations, increasing balancing costs for the grid operator. Even when costs increased, BRPs still benefited from implicit balancing.
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