Overview
ABSTRACT
The use of three-phase AC power or DC power for the distribution electricity networks requires balance between generators and loads In this second article, we see how to control the transient regimes in AC or DC networkswith conversion of static energy,in case of malfunction. In this way a new smart association of AC and DC grid may be suggested to optimize power transfer. This association may be used especially in Brittany where the stability of the network is low
Read this article from a comprehensive knowledge base, updated and supplemented with articles reviewed by scientific committees.
Read the articleAUTHOR
-
Michel PINARD: Professeur agrégé hors classe - Professor at the Conservatoire National des Arts et Métiers and ESIEE
INTRODUCTION
What is an AC power network? A set of lines or cables connecting a large number of generators, usually three-phase AC, to receivers (or loads) via transformers or converters, since transmission requires the use of high voltage.
The arrival of renewable energies (wind turbines, tidal turbines, photovoltaics, etc.) and power converters (with IGBT transistors) is encouraging installers to use direct current for electricity transmission. This new situation has prompted electricians to consider using high-voltage DC networks alongside AC networks. This approach is known as HVDC (High Voltage Direct Current).
We're interested in the particular transients that occur, for example, in the event of a sudden short-circuit on an AC cable, compared with those on the same DC cable, subject to the same voltage. This leads us to a study of the possibilities of power transfers between the two networks, to obtain an optimal combination.
It is then possible to consider the geographical location of direct current generators (wind turbines, photovoltaic panels, water turbines, batteries, etc.) to make this combination optimal. Examples of HVDC networks already in service or planned around the Mediterranean are presented.
At the end of the article, the subject of Brittany, which currently has an energy deficit, is addressed, with suggestions for the construction of a new direct current network exploiting renewable energies, which are particularly varied in this region: wind, sea, light...
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
KEYWORDS
Power Transfer AC-DC | Power converter | DC cable | Britain electric network
AC-DC Network Association
Generator-receiver balance for AC and DC networks
Article included in this offer
"Conversion of electrical energy"
(
273 articles
)
Updated and enriched with articles validated by our scientific committees
A set of exclusive tools to complement the resources
Bibliography
Exclusive to subscribers. 97% yet to be discovered!
Already subscribed? Log in!
