For students
Learn power systems the way engineers use them.
47 free lessons across 6 tracks — in English, German and Turkish — written to connect directly to simulations you can run in your browser. No account, no install.
- Lessons
- 47
- Tracks
- 6
- Tools
- 7
- Labs
- 6
- Languages
- 3
Learning tracks
Focused on what matters in the field.
New to power systems? Start with Fundamentals — every other track builds on its per-unit system, power flow and fault concepts.
Power Systems Fundamentals
Generation, transmission, power flow, synchronous machines, faults and protection — the core of power engineering.
Smart Grids & Digitalization
Grid automation, monitoring, and how AI and data are changing grid operation.
High Voltage Engineering
Insulation coordination, high voltage equipment and testing fundamentals.
Renewable Energy
Solar, wind, inverters and storage — how variable generation actually integrates into the grid.
Grid Stability
Inertia, frequency and voltage stability, oscillations, and how small failures cascade into blackouts.
Power System Economics
Electricity markets in the US and Europe, pricing and the business side of keeping the grid running.
Lesson → lab
Read it, then try to break it.
These lessons link straight to a tool or lab where the same physics runs live. Change one parameter and check whether the result is what the lesson predicted.
Add an air gap and see how the required turns and saturation utilisation respond.
Scale the load up and take a line out — find the bus whose voltage drops first.
Explode the machine and find stator, rotor and excitation — the parts behind P = (E·V/X)·sin δ and the inertia constant H.
Switch from a three-phase to a single-line-to-ground fault and watch the zero-sequence current appear.
Clear the same fault at 100, 200 and 300 ms, then let the bisection find the critical clearing time.
Trade 50 Hz rejection against pulse fidelity in the sensor's output filter.
Run the same day with passive and smart control and compare the transformer loading.
Hands-on simulation — live now
Interactive simulations, right in your browser.
No install, no Python — every simulation runs as plain code in your browser. Run a full Newton-Raphson power flow on the IEEE 39-bus test system, take any line out for an N-1 study, or apply a fault and watch the generators swing through a transient stability event — learn by doing, not just reading.
- A full AC power flow (Newton-Raphson) on the standard IEEE 39-bus system, with N-1 contingency studies
- Three-phase fault and transient stability simulation, from a classical model up to full generator + AVR + PSS dynamics
- Symmetrical-component fault analysis and a partial-discharge sensor chain, benchmarked against published data
import { solvePowerFlow } from "@/lib/engine/ieee39-powerflow";
const result = solvePowerFlow(buses, branches, gens, {
baseMva: 100,
});
console.log(result.buses[0].vMagPu); // 1.039Three languages
One curriculum, three technical vocabularies.
Every lesson exists in English, German and Turkish. These are the terms that trip students up most when moving between lectures, textbooks and papers.
| English | Deutsch | Türkçe |
|---|---|---|
| Bus | Knoten / Sammelschiene | Bara |
| Power flow (load flow) | Lastfluss | Yük akışı |
| Reactive power | Blindleistung | Reaktif güç |
| Per-unit system | Per-Unit-System (bezogene Größen) | Birim değer (pu) sistemi |
| Short circuit / fault | Kurzschluss / Fehler | Kısa devre / arıza |
| Symmetrical components | Symmetrische Komponenten | Simetrik bileşenler |
| Circuit breaker | Leistungsschalter | Kesici |
| Protection relay | Schutzrelais | Koruma rölesi |
| Rotor angle | Polradwinkel | Rotor açısı |
| Inertia | Trägheit (Schwungmasse) | Atalet |
| Critical clearing time | Kritische Fehlerklärungszeit | Kritik arıza temizleme süresi |
| Grid-forming inverter | Netzbildender Wechselrichter | Şebeke oluşturan (grid-forming) evirici |
| Withstand voltage | Stehspannung | Dayanım gerilimi |
| Partial discharge | Teilentladung | Kısmi deşarj |
| Balancing reserve | Regelleistung | Dengeleme rezervi |
| Bidding zone | Gebotszone | Teklif bölgesi |
Coming next
Where the curriculum goes from here.
Synchronous machines, symmetrical components, state estimation and European markets are now live. Next come a deeper stability lesson and four new tracks, roughly in this order.
Converter-Driven & Resonance Stability
A full lesson on the two classes the 2021 IEEE/CIGRE classification added for power-electronic grids, beyond the overview in the stability introduction.
Power System Protection
Protection zones, instrument transformers, overcurrent, earth-fault, distance and differential protection, selectivity and IEC 61850 — linked to the Fault Analysis Lab.
Operation & Planning
Economic dispatch, optimal power flow, unit commitment, N-1 security and reserves — what an operator does with a solved power flow, built on the IEEE 39-bus labs.
HVDC & FACTS
Line-commutated and voltage-source converters, offshore grid connections, and the power-electronic devices that control flows and voltages on AC networks.
Distribution Systems & DER
Medium- and low-voltage network planning, hosting capacity, voltage control with inverters, and the distribution system operator's changing role.
Why GRIDRA
More than a textbook.
Real-world context
Learn concepts alongside the industry challenges they're actually used to solve.
Sources you can check
Lessons point to standard textbooks and IEC/IEEE publications — so you can go deeper, or prove a lesson wrong.
Practice, not just theory
Hands-on simulations designed to build intuition, not just pass exams.
Start at lesson one.
Begin with the fundamentals — or jump straight into a lab and come back to the theory the moment a result surprises you.