Collection

Power and UPS

Power distribution, UPS, batteries, protection and redundant supply.

Sources
418
Downloadable PDFs
95
Years
1984–2027

All sources

289–312 / 418

RegulationPDF

Energies (MDPI AG) 2022

Valve Regulated Lead Acid Battery Evaluation under Peak Shaving and Frequency Regulation Duty Cycles

When considering VRLA UPS strings for grid services, account for frequency regulation (especially in a low SOC window) degrading batteries much faster than peak shaving, with capacity loss tracking internal resistance rise.

  • Test modules: six-cell C&D SHC 12-200FT lead-carbon AGM VRLA, 172 Ah at the C10 rate to 1.8 V/cell at 25 °C, 60 kg.
White paperFree to read

Eaton 2018

What You Need to Know About Arc Flash

Add arc-flash attributes per switchboard (available fault current, clearing time, maintenance-mode/ZSI availability, working distance) and compute incident energy per IEEE 1584 for line and load side.

  • NFPA 70E 130.5(G): the incident energy analysis must be updated at least every 5 years.
White paperFree to read

Rittal 2014

Whitepaper Rittal PDU international

Keep PDU catalogue fields for phases, input A, max kW, outlet types, ambient rating, metering accuracy, relay type and management protocol (SNMPv3).

  • C14 inlets carry up to 10 A; C20 up to 16 A for large consumers.
Research paperPDF

arXiv preprint (University of Texas at Austin; formatted for IEEE Transactions on Power Systems) 2025

Wide-Area Power System Oscillations from Large-Scale AI Workloads

Model AI data-centre load as a persistent periodic forcing (0.3-1.5 Hz band, about 20% of peak fluctuating) rather than a ramp, and add oscillation analysis to the grid-interconnection study.

  • The fine-tuning model uses a dominant frequency U(0.3, 0.7) Hz and compute fraction 0.7-0.9.

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