2013. — 9 c.The expected shortage of energy resources and the increasing environmental burden are a booster for a global change of thought in the field of energy politics. This changes of thought toward renewable energy resources and new modes of usage such as for example the electrically powered car has a deciding impact on the electrical-power-system.
Therefore a change is taking place in the naturally grown power system of the last decades, where energy production took place in close proximity to the user as well as according to user requirements, thereafter fed into the transmission network, and was then distributed.
The intention to effect a change is shown by the SMART GRID Initiative, which deals with the new challenges regarding the individual voltage levels. The electrical power system is developing into a network, comparable to the Internet. The main difference to the Internet is the transmission of electrical energy instead of information. This constitutes an entirely different quality, as the balance between production and use has to be maintained. An imbalance necessarily leads to reduction in the reliability of supply, which may result in local blackouts or supply shortages. Figure 1 of illustrates the changes in the electrical power system.
