Français
7. Earth fault protection for radial networks with direct neutral to earth
7.1 Earth faults in direct neutral to earth
Generally speaking, since most networks are overhead, capacitive currents can be neglected in comparison with the current flowing in the faulted feeder. If we were to take them into account, the calculation would be complicated: on the one hand, the capacitances are distributed, and on the other, the residual voltage varies along the line according to many factors, in particular the short-circuit power of the network and the impedances of the conductors up to the fault location.
SCROLL TO TOP
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
Earth fault protection for radial networks with direct neutral to earth
Resistant fault detection
Bibliography
- (1) - WILLHEM (R.), WATERS (M.) - Neutral grounding in high voltage transmission. - Elsevier publishing company.
Also in our database
Standards and norms
- Technical decree – Technical requirements for electrical power distribution - UTE C11-001 -
- Postes de livraison établis à l'intérieur d'un bâtiment et alimentés par un réseau de distribution publique HTA (jusqu'à 33 kV) - NF C13-100 -
- Installations électriques à haute tension pour les sites de production d'énergie électrique, les sites industriels, tertiaires et agricoles - NF C13-200 -
- Effects...
The Ultimate Scientific and Technical Reference
