What happens when the protection is not activated at the substation

Substation - a complex energy structure, located on the territory of which not only power transformers, but also protective devices, which serve to ensure that as soon as possible to turn off the damaged area in the zone responsibility.

Well, have you ever seen what happens when the trip does not take place for any reason. So in this article I'll show you what happens and tell you why this is happening.

Breakers and relay protection

Before proceeding to the consideration of the consequences, I would like to say just a few words on the appointment of circuit breakers and relay protection.

Thus, the main task of any switch - this circuit in order to eliminate an emergency operation or output to repair equipment. But by itself the switch is unable to determine which mode is currently in the power system (normal or emergency). For this purpose there is relaying that just follows the work of the energy system in case of emergency (in its area of ​​responsibility) gives a command to the circuit breaker.

The composition of the protection relay includes a plurality of elements, such as: Time relays, power relays, relays, repeaters, microprocessor elements, etc. and each element, despite the high degree of reliability can exit system. In addition, the mechanical parts of the switch are subject to wear and one not so fine day may occur from the failure of one node.

And it can lead to this

Of course, relay protection provides the probability of such failure, and so in addition to the main protection and backup protection there, as well as remote backup. But in spite of this multi-layered defense, still occur periodically failures that lead to devastating consequences.

Sometimes these "freelancers off" hit the recording cameras.

Where clearly visible scale and the destructive power of high voltage and high current. Therefore, you should remember one simple thing: substation - a dangerous object on the territory of which may be only trained people, so do not come close to such an object, and do not let go children.

If you liked the material, then place the thumbs up. Thank you for your attention!