Rel (busbar) on the electrical center is a vital part of the installation, meaning that in the event of disruption or damage to rail would be a great result for the operation of the electrical center is concerned because power can be channeled. When something like this happens on a large power center in interconnect systems, then this may disrupt the entire system interconnection. Hence, let alone damage to rails interference should be avoided wherever possible.
On the other hand, the situation is open rails, prone to dust pollution for the sea water or steam power station located on the waterfront. Large power center is generally located on the waterfront because it requires cooling water in large quantities and also require fuel supplies in bulk where economical transport is done by ship.
Given the above, then there must be measures of protection / protection for the rails in order to avoid interference, namely by:
1. Installing lightning wires that has sufficient protection against the corner of the rail (less than 300C).
2. Installing lightning arresters and the transformer to the airways with a short distance away.
3. Perform grounding / earthing is good for all metal structure.
4. Gives fence tight around the rails so that no animal can be entered that may cause interference, such as chickens, goats, snakes, and cows.
If you get an interruption in rail, then special protection is to protect rail busbar protection relays. The principle works like a differential relay which measures the difference between incoming and outgoing flows rail (busbar). In the state there is an interruption in rail, so that the difference between the current value is 0 the relay will work open all PMT associated with the disrupted rail.
Vital Installation Information Section
Lighting of the power plants is very important, without illumination, the electrical center of the operation will be interrupted. So there should be concrete measures in order to supply maximum power and lighting installations as much as possible to never extinguished.
These steps are:
1) Supply power for lighting installations drawn from his own use of the transformer, the transformer instead of generating units so that when the generating unit is stopped or faulty, then the power supply for the lighting installation is not compromised.
2) Provide emergency power unit (for the installation of lighting and for other purposes such as a computer that is vital to the operation). 3) Provide a direct current electrical installation for most lighting is very important to use a direct current lights.
In addition to the power supply for lighting that require a reliable supply, other parts also need a reliable power supply for the computer is operating, spring fastening systems including switchgear protection PMT. At the power plant should be a direct current power supplies are used to input direct current motors used steam turbine rotating shaft during start spinning.
It is necessary in the event of a major disruption that causes all the trip unit and external power supply is lost and the electrical center will also lead to the cessation of the previous steam turbine shaft under load (temperature hundreds of degrees Celsius) so it will be bent when it cools (contract) without playing.
Direct current from the storage battery is also required for telecommunications facilities are widely used at the time of interruption occurs. Therefore, there should be a small emergency generating units that can and should be operated in case of a major disruption, at least be able to serve the above purposes, including to charge the battery.