![](/assets/images/picto-drapeau-france-3a76576a5d60a512053b4612ab58dae5.png)
3. Power grid and disturbances
For an energy network, four main disturbances and their possible combinations are identified.
-
Amplitude variations
These are not the slow variations in voltage that are corrected by the transformer's on-load regulators, but rapid variations in voltage, in the form of voltage dips or sudden jolts, either isolated or more or less repetitive, regular (square-wave) or irregular.
-
Voltage waveform changes
The wave is no longer sinusoidal and can be considered as the superposition of a wave with a fundamental frequency of 50 Hz, harmonic voltages whose frequency is an integer multiple of the fundamental frequency, and interharmonic voltages at any frequency.
-
Three-phase system asymmetry...
Exclusive to subscribers. 97% yet to be discovered!
You do not have access to this resource.
Click here to request your free trial access!
Already subscribed? Log in!
![](/assets/images/logo-eti-286623ed91fa802ce039246e516e5852.png)
The Ultimate Scientific and Technical Reference
This article is included in
Electricity networks and applications
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Power grid and disturbances