Grids, lines, transformers and protection: relay coordination curves, CT saturation, transformer hot spot and loss of life, conductor ratings, line parameters. Each calc names the method, the standard and edition it follows and its limits; they are for screening and learning, and a protection or grid study still needs a qualified engineer.
Wired White v2 Vergleichen Sie einen 4-Stunden-Batteriespeicher mit einem Gas-Spitzenlastkraftwerk in $/kW-Jahr und $/MWh. Modellieren Sie Spitzenlastereignisdauer, Ladeverluste, Alterung, Kapazitätsergänzung und die Batterieauslegung für gleiche Bedarfsdeckung.
Wired White v2 Calculate external-grid SCR, inverter fault-current limits and synthetic-inertia power and energy demand. Compare dispatch headroom and usable energy during a prescribed frequency ramp.
Wired White v3 Size an NGR from fault current or assess an existing resistor. Check 3·I_c0, hot-current detection, short-time energy and relay grading—and compare with 400 A.
Wired White v3 Match transformer CT ratios and vector-group phase shift, plot a dual-slope 87T characteristic, and check through faults, internal faults and harmonic blocking.
Wired White v3 Estimate overhead conductor ampacity, temperature after a current step, and thermal sag from ambient temperature, wind and sun. Includes ambient-only comparisons and an animated example day.
Wired White v3 Model a 24-hour transformer load cycle, hot-spot temperature and insulation life use. Calculate harmonic loss factors and loss-based derating from a current spectrum.
Wired White v2 Estimate CT knee crossing and fault-current distortion with DC offset, burden and remanence. Animate core flux and compare the relay current with a one-cycle Fourier estimate.
Wired White v2 Calculate overhead-line R, L and C per km from conductor positions, bundles and soil resistivity. Inspect phase and sequence impedance matrices, with Carson earth return and neutral reduction.
Wired White v3 Plot IEEE and IEC relay curves with CT ratios, instantaneous trips and user fuse points. Screen grading margins and find a candidate upstream time dial and pickup interval.
Wired White v2 Simulate a single-area grid trip with synchronous inertia, GFM droop and virtual inertia, GFL fast response and UFLS. Compare RoCoF and nadir as synchronous share falls.
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