electrical power system

Categories power

SES is put together and the sources of all changes to the system, redistribution and transmission of electricity.But such a system exists and requirements:

1. reliability;
2. Continuity of power;
3. Security service of SES components;
4. Standardization;
5. Energy saving, energy efficiency;
6. for Environmental Safety;
7. Ergonomics;

All electrical system shared by different features.Classify by:

• Type Origin Energy;
• Location;
• Nature and the current frequency;
• neutral Organization;
• Reliability of supply;
• purpose;
• Mobility;
• accessories to the main user.

Form SES - a schematic position of the input energy into it, the distribution of vehicles, transmission, transformation.

power categories on the reliability of power supply

categories are divided into three types, according to electrical receivers which are directly involved in the reception of energy.Thus, the power consumers of category 1 are those receivers, resulting in a break of which may be serious consequences: damage to property, threats to life, disruption of communications work, damage to expensive equipment, etc.Category 2 - time interval which comes crashing cars, machinery, vehicles, life of the population, the shipment of goods, equipment and work stoppages.For all other categories 3 elektroriёmniki.

has its own protection against the different situations of non-standard mode in each system.This protection relay.There are three basic modes of SES Labour:

• Normal: takes place to ensure trouble-free access to energy users, in the right quantity and quality
• Emergency: hit by a natural mode and lasts until the shutdown of the damaged item.Emergency operation only short
• Post-accidental: the regime after the accident lasts until full recovery mode first rules

It should be noted that the category of supply of electricity consumers may change if necessary.And of course, it all depends on the purpose of the object.For the houses assigned to the third category, and the first or second for manufactures.

power supply for the first category

For users of category 1 electricity supply security is necessary to implement power supply 2 power supply.Power supplies are required to be independent of each other.This is necessary to prevent and understating the risks of failures and outages.In case of an accident on the same source, the supply of electricity will take place from the second.

stands out among consumers in this category the special security group.The receivers of this particular group is characterized by the fact that their work without interruption is necessary to stop the production without an accident.Moreover, the supply of a special group has to be a third independent source (generator, batteries).In the absence of reserve power is acceptable to use soft stop process.

It is worth remembering that the normal livelihood of any person is not easy to imagine without electricity.Uninterrupted supply of such resources is necessary for everything that surrounds us and to control buildings.