A browser-based tool for analysing balanced three-phase AC overhead transmission lines using standard ABCD-parameter methods. Built with a Windows 98-style interface using 98.css.
TADEE Analyser Group 4 — Version 1.1
The TADEE Analyser models single-circuit bundled-conductor overhead transmission lines. Three line models are supported:
| Model | Suitable for | Description |
|---|---|---|
| Short | < 80 km | Series impedance only; shunt capacitance neglected |
| Nominal π | 80 – 250 km | Shunt capacitance split equally at each end |
| Distributed | > 250 km | Exact hyperbolic solution using distributed parameters |
- Line length, receiving-end load, power factor, nominal voltage, and frequency
- Symmetrical (single D) or unsymmetrical (Dab, Dbc, Dca) conductor geometry
- Bundled conductor support: 2–4 sub-conductors per bundle with configurable spacing
- Conductor strand count, strand diameter, and AC resistance per unit length
- Inductance and capacitance per phase per km
- Inductive and capacitive reactance
- ABCD generalised circuit constants (polar form)
- Sending-end voltage (phase and line-to-line), sending-end current, and charging current
- Voltage regulation, three-phase power loss, transmission efficiency
- Surge impedance (Zc) and surge impedance loading (SIL)
Three interactive diagram subpanes, each supporting scroll-wheel zoom and click-and-drag pan:
- Conductor Arrangement — cross-section view with GMD/GMR annotations; optional to-scale rendering
- Circuit Diagram — equivalent circuit schematic for the selected model; distributed model includes ladder and d/dx differential views
- Phasor Diagram — Vs, Vr, Is, Ir phasors at correct magnitudes and angles
- Save / Open — save and restore input parameters as JSON
- Export result as — PDF report, JSON, plain text, or Markdown
- Batch Mode — run the analyser over many parameter combinations at once, via a range sweep or a loaded JSON file (array-of-objects or object-of-arrays format); export all results as JSON or multi-page PDF
The app uses ES modules and must be served over HTTP — opening index.html directly from the filesystem (file://) will not work.
Python (recommended):
cd tadee-analyser-web
python3 -m http.server 8080Then open http://localhost:8080 in your browser.
Node.js (npx serve):
npx serve .VS Code Live Server extension: right-click index.html → Open with Live Server.
Internet access is required for CDN-loaded assets (98.css fonts, KaTeX). The app will still function without it, but fonts and math rendering may degrade.
All dependencies are loaded from CDN — no build step or package manager required.
| Library | Purpose | Licence |
|---|---|---|
| 98.css | Windows 98-style UI | MIT |
| KaTeX v0.16.11 | Math typesetting | MIT |
| Win98 Icons | Icon set by Alex Meub | — |
Copyright © 2026 Ilamparithi Murali. Released under the MIT License.
Windows® is a registered trademark of Microsoft Corporation. This project is not affiliated with or endorsed by Microsoft Corporation.
Dedicated to the past, present and future efforts of Dr. M. P. Selvan.